{"title":"Building Membrane","description":"\u003cp\u003eReflective foil sarking, vapour permeable breather wraps, Class 1 and 2 vapour barriers and non-combustible glass fabric membranes.\u003c\/p\u003e\u003cp\u003eThree classifications printed on every roll decide whether one suits your build-up: vapour class 1 to 4, water control, and duty grade. All three are listed on each product page. Delivered across Victoria and New South Wales.\u003c\/p\u003e","products":[{"product_id":"vapourtech-rwc-roof-wall-commercial","title":"VapourTech® RWC Roof Wall Commercial","description":"\u003cp\u003eVapourTech RWC is a Class 4 vapour permeable membrane for commercial roofs and walls. One roll size, 1500 mm by 30 m, covering 45 m², built up from four layers with a high strength polymer mesh through the middle and classified Medium duty to AS\/NZS 4200.1:2017.\u003c\/p\u003e\n\u003ch3\u003eWhat vapour permeable is actually buying you\u003c\/h3\u003e\n\u003cp\u003eHigh permeance is the whole point of this membrane. It sheds bulk water from outside while still letting water vapour escape out of the structure, which is what keeps a commercial wall or roof cavity from holding moisture. Permeance is 2.144 µg\/N·s with a water vapour transmission rate of 241 g\/m² per 24 hours, and it is a water barrier to AS\/NZS 4201.4 and an air barrier as well. \u003ca href=\"\/blogs\/blog\/metal-roof-condensation-australia\"\u003eCondensation in metal roofs\u003c\/a\u003e explains why letting vapour out matters as much as keeping water in.\u003c\/p\u003e\n\u003ch3\u003eNon-reflective, so no air gap to detail\u003c\/h3\u003e\n\u003cp\u003eEmittance is 0.9 on both faces, category NN. It does not work by reflection, so it does not need an air gap in front of it and can sit directly against the frame. That makes it simpler to detail than a foil sarking, and unlike foil it is non-conductive.\u003c\/p\u003e\n\u003ch3\u003eStrength and fire\u003c\/h3\u003e\n\u003cp\u003eTensile strength is 10.4 kN\/m machine direction against a 9.5 minimum, edge tear 512 N against a 45 minimum, and it retains 85% of tensile strength after UV exposure. Flammability classification is Low, 5 or lower, and it complies with AS 3959-2018 for all Bushfire Attack Levels from BAL Low through to Flame Zone. Get independent advice before locking a sarking into a BAL design.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eInstall to AS 4200.2 with the printed face out, and lap the joints down the slope so water always runs over a joint rather than into it. Suitable for Australian climate zones 2 to 8. Durability drops in industrial or farm buildings where the air carries chemicals, so ask us first if that is the setting.\u003c\/p\u003e\n\u003cp\u003eFull permeance, strength and fire figures are in the table below. For where a membrane sits against the blanket and the sheeting, see \u003ca href=\"\/blogs\/blog\/metal-roof-insulation-australia\"\u003eMetal roof insulation in Australia\u003c\/a\u003e.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"Default Title","offer_id":45225009545398,"sku":"TSVTRWC-45","price":221.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Trade-Select-VapourTech-RWC-Roof-Wall-Commercial-1024-x-1024.webp?v=1782756324"},{"product_id":"trade-select-vapourtech-wall","title":"Trade Select VapourTech® Wall","description":"\u003cp\u003eTrade Select VapourTech Wall is a Class 4 vapour permeable residential wall wrap, 0.45 mm thick, stocked in a 1500 mm x 30 m roll covering 45 m² and a 3050 mm x 30 m roll covering 91.5 m². Light Wall duty to AS\/NZS 4200.1:2017.\u003c\/p\u003e\n\u003ch3\u003eHighly permeable, by design\u003c\/h3\u003e\n\u003cp\u003eVapour permeance is 3.764 µg\/N·s, which is high even for a Class 4 membrane. The wall can dry outward readily, while the wrap still works as a water barrier to AS\/NZS 4201.4 and as an air barrier. In a residential wall that is usually what you want, because the moisture load comes from inside the house.\u003c\/p\u003e\n\u003ch3\u003eNon-reflective, so simpler to detail\u003c\/h3\u003e\n\u003cp\u003eEmittance is 0.58 and 0.56 on the two faces, category NN. It does not work by reflection, so there is no air gap to preserve and it can sit directly against the frame. It is also non-conductive, unlike a foil wrap.\u003c\/p\u003e\n\u003ch3\u003eThe 3050 mm roll\u003c\/h3\u003e\n\u003cp\u003eAt just over three metres wide it runs a full storey in one piece, so the horizontal join disappears and there is one less lap to tape. On a long elevation that is the difference the wide roll buys, and it is the reason to pay more per roll for the same square metre rate.\u003c\/p\u003e\n\u003ch3\u003eStrength\u003c\/h3\u003e\n\u003cp\u003eBall burst 215 N against a 200 minimum, edge tear 189 N machine direction against a 45 minimum, and 0.0% shrinkage against a 0.5% limit. Flammability classification Low.\u003c\/p\u003e\n\u003cp\u003eFull figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"1500 mm x 30 m (45 m²)","offer_id":45225009578166,"sku":"TSVTW-45","price":107.0,"currency_code":"AUD","in_stock":true},{"title":"3050 mm x 30 m (91.5 m²)","offer_id":45385995387062,"sku":"TSVTW-91","price":258.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/TradeSelect-VapourTech-Wall-1024x1024-2.webp?v=1782756325"},{"product_id":"trade-select-vapourtech-brane-vhp","title":"Trade Select™ VapourTech® Brane® VHP","description":"\u003cp\u003eTrade Select VapourTech Brane VHP is a vapour permeable membrane from Ametalin, stocked in four roll sizes from 1370 x 30 m covering 41.5 m² up to 3050 x 30 m covering 91.5 m².\u003c\/p\u003e\n\u003ch3\u003eVHP means very high permeability\u003c\/h3\u003e\n\u003cp\u003eA high permeability membrane lets water vapour move out of the structure readily while still shedding liquid water from outside. That combination is what lets a wall dry outward instead of holding moisture in the frame, and it is the reason permeable membranes moved up the priority list in recent code cycles. \u003ca href=\"\/blogs\/blog\/metal-roof-condensation-australia\"\u003eCondensation and what NCC 2022 asks for\u003c\/a\u003e covers the reasoning.\u003c\/p\u003e\n\u003ch3\u003eThe wide rolls\u003c\/h3\u003e\n\u003cp\u003eThe 2740 mm and 3050 mm rolls run a full storey in one piece and remove the horizontal join. On a commercial elevation that is the main reason to choose them.\u003c\/p\u003e\n\u003cp\u003eFor declared permeance, duty classification, strength and BAL figures, \u003ca href=\"\/pages\/contact\"\u003eask us\u003c\/a\u003e and we will send the current Ametalin data sheet.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"1370 mm x 30 m (41.1 m²)","offer_id":45225009643702,"sku":"TSVHP-41","price":73.15,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 30 m (45 m²)","offer_id":45225009676470,"sku":"TSVHP-45","price":75.6,"currency_code":"AUD","in_stock":true},{"title":"2740 mm x 30 m (82.2 m²)","offer_id":45225009709238,"sku":"TSVHP-82","price":170.0,"currency_code":"AUD","in_stock":true},{"title":"3050 mm x 30 m (91.5 m²)","offer_id":45225009742006,"sku":"TSVHP-91","price":186.0,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 30 m (45 m²) white faced","offer_id":45385995190454,"sku":"TSVHP-W-45","price":84.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Trade-Select-VapourTech-Brane-VHP-768x768-1.webp?v=1782756325"},{"product_id":"trade-select-wall-wrap-breather","title":"Trade Select Wall Wrap Micro-perforated (Breather)","description":"\u003cp\u003eTrade Select Wall Wrap Micro-perforated is the vapour permeable version of Ametalin's reflective wall wrap. Stocked in Light, Medium and Heavy Duty, each in 1350 mm and 1500 mm widths and 30 m or 60 m rolls. Coverage runs from 40.5 m² to 90 m² per roll.\u003c\/p\u003e\n\u003ch3\u003eBreather, not barrier\u003c\/h3\u003e\n\u003cp\u003eLight and Medium Duty are perforated to Class 4, at 1.600 and 1.717 µg\/N·s. Heavy Duty is Class 3, at 0.3341 µg\/N·s. All three let the wall dry outward instead of holding moisture against the frame. If the design calls for a vapour barrier instead, the solid version is \u003ca href=\"\/products\/trade-select-wall-wrap\"\u003eTrade Select Wall Wrap\u003c\/a\u003e, which is Class 2.\u003c\/p\u003e\n\u003ch3\u003eCheck the climate zone before picking Heavy Duty\u003c\/h3\u003e\n\u003cp\u003eNCC 2022 sets a minimum vapour permeance for a membrane on the outside of the wall insulation. Zones 4 and 5 need 0.143 µg\/N·s, so any of the three will do. Zones 6, 7 and 8 need 1.14 µg\/N·s, which only Class 4 reaches. Melbourne is zone 6, so there it is Light or Medium Duty. Ametalin do not recommend any of the three for wet tropical zones.\u003c\/p\u003e\n\u003ch3\u003eIt is not a water barrier\u003c\/h3\u003e\n\u003cp\u003eAll three duties are classified Non-Water Barrier. Perforating a membrane to let vapour out also lets liquid water through, so these belong behind a masonry leaf or a drained cavity where the outer skin sheds the rain. They are not the wrap for direct fixed cladding.\u003c\/p\u003e\n\u003ch3\u003eChoosing the duty\u003c\/h3\u003e\n\u003cp\u003eThe barrier classifications match apart from the vapour class. The difference shows up before the cladding goes on, while the frame stands wrapped and exposed. Light Duty is 0.09 mm, 10.9 kN\/m machine direction with 444 N edge tear. Medium Duty is 0.10 mm and 11.5 kN\/m against a higher minimum. Heavy Duty is 0.12 mm, 13.7 kN\/m and 565 N edge tear.\u003c\/p\u003e\n\u003ch3\u003eChoose the roll length from the elevation\u003c\/h3\u003e\n\u003cp\u003eThe 60 m rolls halve the number of end joins on a long run, and every join is a line that has to be lapped and taped correctly.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eTape the joins and seal the penetrations with \u003ca href=\"\/products\/trade-select-quicktape\"\u003eQuickTape\u003c\/a\u003e, which is the tape Ametalin specify for permeable membranes. Keep the foil face to the cavity so the reflective side can work. The wrap is electrically conductive, so keep it clear of wiring. Full figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"Light Duty \/ 1350 mm x 30 m (40.5 m²)","offer_id":45225010135222,"sku":"TSLD-40-B","price":52.2,"currency_code":"AUD","in_stock":true},{"title":"Light Duty \/ 1350 mm x 60 m (81 m²)","offer_id":45225010167990,"sku":"TSLD-81-B","price":106.0,"currency_code":"AUD","in_stock":true},{"title":"Light Duty \/ 1500 mm x 30 m (45 m²)","offer_id":45225010200758,"sku":"TSLD-45-B","price":57.6,"currency_code":"AUD","in_stock":true},{"title":"Light Duty \/ 1500 mm x 60 m (90 m²)","offer_id":45225010233526,"sku":"TSLD-90-B","price":117.0,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1350 mm x 30 m (40.5 m²)","offer_id":45225010004150,"sku":"TSMD-40-B","price":67.0,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1350 mm x 60 m (81 m²)","offer_id":45225010036918,"sku":"TSMD-81-B","price":125.0,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1500 mm x 30 m (45 m²)","offer_id":45225010069686,"sku":"TSMD-45-B","price":70.0,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1500 mm x 60 m (90 m²)","offer_id":45225010102454,"sku":"TSMD-90-B","price":132.0,"currency_code":"AUD","in_stock":true},{"title":"Heavy Duty \/ 1350 mm x 30 m (40.5 m²)","offer_id":67644864659638,"sku":"TSHD-40-B","price":77.0,"currency_code":"AUD","in_stock":true},{"title":"Heavy Duty \/ 1350 mm x 60 m (81 m²)","offer_id":67644864692406,"sku":"TSHD-81-B","price":145.0,"currency_code":"AUD","in_stock":true},{"title":"Heavy Duty \/ 1500 mm x 30 m (45 m²)","offer_id":67644864725174,"sku":"TSHD-45-B","price":82.0,"currency_code":"AUD","in_stock":true},{"title":"Heavy Duty \/ 1500 mm x 60 m (90 m²)","offer_id":67644864757942,"sku":"TSHD-90-B","price":156.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/TradeSelect-Sarking-Micro-perforated-LD-1024x1024-1.webp?v=1782756327"},{"product_id":"proctorwrap","title":"ProctorWrap™ RW","description":"\u003cp\u003eProctorWrap RW is a vapour permeable residential wall wrap from Proctor Group, stocked in four roll sizes: 1500 x 30 m covering 45 m², 1500 x 50 m covering 75 m², 1750 x 25 m covering 68.75 m², and 3000 x 30 m covering 90 m².\u003c\/p\u003e\n\u003ch3\u003eThe wide roll is worth considering\u003c\/h3\u003e\n\u003cp\u003eEvery horizontal join in a wall wrap has to be lapped and taped properly to keep working. The 3000 mm roll runs a full storey height in one piece and removes that line entirely, which on a two storey house is a real saving in both time and risk.\u003c\/p\u003e\n\u003ch3\u003eResidential or commercial\u003c\/h3\u003e\n\u003cp\u003eRW is the residential grade. For commercial work, \u003ca href=\"\/products\/proctorwrap-cw\"\u003eProctorWrap CW\u003c\/a\u003e is the heavier specification with published system R-values.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eTape the joins and seal the penetrations, or the wrap is not a weather barrier. Get the cladding on reasonably promptly rather than leaving the wrap exposed for months.\u003c\/p\u003e\n\u003cp\u003eFor declared permeance, duty classification and BAL figures, \u003ca href=\"\/pages\/contact\"\u003eask us\u003c\/a\u003e and we will send the current Proctor data sheet.\u003c\/p\u003e","brand":"Proctor Group","offers":[{"title":"1500x30m (45m2)","offer_id":45225010659510,"sku":"SQ5344876","price":108.1,"currency_code":"AUD","in_stock":true},{"title":"1500x50m (75m2)","offer_id":45225010692278,"sku":"SQ0447407","price":211.3,"currency_code":"AUD","in_stock":true},{"title":"1750x25m (68.75m2)","offer_id":45225010725046,"sku":"SQ1433844","price":185.8,"currency_code":"AUD","in_stock":true},{"title":"3000x30m (90m2)","offer_id":45225010757814,"sku":"SQ1058095","price":218.8,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/RW1-for-Website.webp?v=1782756330"},{"product_id":"proctorwrap-cw","title":"ProctorWrap™ CW","description":"\u003cp\u003eProctorWrap CW is a Class 4 vapour permeable commercial wall wrap, a three layer spun bonded polyolefin membrane thermally calendared together. 1500 mm x 50 m covering 75 m², in plain and CW-IT integrated tape versions.\u003c\/p\u003e\n\u003ch3\u003eSystem R-values, not just a membrane figure\u003c\/h3\u003e\n\u003cp\u003eProctor quotes total system values for common build-ups: RT 3.0 summer and 3.2 winter in a brick veneer wall, RT 2.8 and 3.1 in battened lightweight cladding, and RT 2.6 and 2.9 direct fixed. Those numbers show how much the build-up around the wrap matters compared with the wrap itself.\u003c\/p\u003e\n\u003ch3\u003eWhere it suits, and where it does not\u003c\/h3\u003e\n\u003cp\u003eRecommended for warm to cold climate zones, and specifically not recommended in tropical zones where the outside air is more humid than inside. A vapour permeable wrap works by letting moisture move in the drier direction, so if the humidity gradient runs the other way the logic reverses. Worth checking before specifying it on a northern job.\u003c\/p\u003e\n\u003ch3\u003eHandling\u003c\/h3\u003e\n\u003cp\u003eIt is not made to take prolonged UV or weather, so get the cladding on as soon as practical. Store it cool, dry, out of sunlight and away from wet concrete and alkaline materials. Burst strength 200 N or more, shrinkage 0.5% or lower.\u003c\/p\u003e\n\u003ch3\u003eBushfire\u003c\/h3\u003e\n\u003cp\u003eSuitable for BAL 12.5 through to Flame Zone under AS 3959, flammability index 5 or lower.\u003c\/p\u003e\n\u003cp\u003eFull figures and product codes are in the table below.\u003c\/p\u003e","brand":"Proctor Group","offers":[{"title":"1500x50m (75m2)","offer_id":45225010823350,"sku":"SQ3862218","price":207.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/CW1-for-Website.webp?v=1782756331"},{"product_id":"rhino-metal-roofing-rp-51mr","title":"Rhino Metal Roofing RP-51MR Heavy Duty Reflective Roof Sarking","description":"\u003cp\u003eRhino Metal Roofing RP-51MR is a heavy duty reflective roof sarking made by Thor Building Products for residential and commercial metal roofs. The foil is bonded to a reinforcing polymer mesh coloured blue to cut glare while it goes on.\u003c\/p\u003e\n\u003ch3\u003eStrength and fire\u003c\/h3\u003e\n\u003cp\u003eThor rate it heavy duty: tensile strength at least 12.5 kN\/m along the roll and 7.5 kN\/m across, edge tear at least 80 N both ways. The flammability index is Low, below 5 to AS 1530.2. It suits BAL 12.5 to FZ under AS 3959 section 3.10, except exposed installations in fire control rooms or fire-isolated exits.\u003c\/p\u003e\n\u003ch3\u003eA vapour barrier, so ventilate in the cold\u003c\/h3\u003e\n\u003cp\u003eThis is a Class 2 Vapour Barrier at 0.011 µg\/N.s. Where daytime temperatures fall below 5 °C, Thor say the roof must be well ventilated and moist air from the house exhausted outside. Our article on \u003ca href=\"\/blogs\/blog\/metal-roof-condensation-australia\"\u003emetal roof condensation\u003c\/a\u003e explains why.\u003c\/p\u003e\n\u003ch3\u003eWhat it adds thermally\u003c\/h3\u003e\n\u003cp\u003eThe data sheet says up to R1.3 may be added to the insulation system in a roof. No roof build-up is given, so read it as an upper limit, not a rating for the foil. Thor recommend at least 20 mm of air space next to the foil face.\u003c\/p\u003e\n\u003ch3\u003eOrdering and site notes\u003c\/h3\u003e\n\u003cp\u003eBoth rolls are 1350 mm wide: 30 m covers 40.5 m², 60 m covers 81 m². Install to AS\/NZS 4200.2 with 40 mm of sag between trusses and expect up to 2% shrinkage. Sheet the roof as soon as possible and keep the rolls dry. Full figures are in the table below.\u003c\/p\u003e","brand":"Rhino","offers":[{"title":"1350 mm x 30 m (40.5 m²)","offer_id":67636084703414,"sku":"RP-51MR-30","price":71.0,"currency_code":"AUD","in_stock":true},{"title":"1350 mm x 60 m (81 m²)","offer_id":45343873695926,"sku":"RP-51MR-60","price":138.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/RP-51MR-Open-Roll.jpg?v=1786182783"},{"product_id":"ametalin-thermal-brane-gp4-foil-insulation","title":"Trade Select ThermalBrane GP™ Reflective Foam Insulation","description":"\u003cp\u003eTrade Select ThermalBrane GP is a double sided reflective foam insulation built around a 4 mm cross linked closed cell XPE foam core with aluminium foil on both faces. Ametalin describe it as a three in one product: reflective insulation, thermal break and medium vapour barrier. Two roll sizes, 1500 mm x 20 m and 1500 mm x 30 m.\u003c\/p\u003e\n\u003ch3\u003eWhat the foam core adds\u003c\/h3\u003e\n\u003cp\u003eA plain foil membrane gives you reflection and nothing else. The 4 mm foam core adds a material R-value of R0.1 and, more usefully, a physical separation that reduces conduction where the product sits between two building elements. That is what makes it usable as a thermal break rather than only as a sarking.\u003c\/p\u003e\n\u003ch3\u003eReflective on both sides\u003c\/h3\u003e\n\u003cp\u003e97% reflective at 0.03 emissivity on the bright side and 96% at 0.04 on the anti-glare side. Both faces need an air space in front of them to contribute. Ametalin declare RT 1.1 winter for a ventilated 22 degree tile roof, RT 1.2 winter for a steel stud framed wall, and RT 2.1 for a brick veneer or double brick cavity wall.\u003c\/p\u003e\n\u003ch3\u003eExtra heavy duty\u003c\/h3\u003e\n\u003cp\u003eTensile strength 15.6 kN\/m machine direction against a 13.0 kN\/m minimum, edge tear 853 N against 90 N. High water penetration resistance and a Medium vapour barrier classification. It complies with AS 3959-2009 for wall systems from BAL Low through to Flame Zone.\u003c\/p\u003e\n\u003ch3\u003eWhere it goes\u003c\/h3\u003e\n\u003cp\u003eRoofs, walls and floors, in houses and in commercial sheds. In a roof it is laid over the rafters as a continuous membrane with the blue anti-glare side facing out, lapped no less than 150 mm, and there is a 150 mm flap on the roll for that. It is fibre free and non-allergenic, which is a real advantage in a shed where the underside stays exposed.\u003c\/p\u003e\n\u003ch3\u003eTwo cautions\u003c\/h3\u003e\n\u003cp\u003eAluminium corrodes in contact with wet concrete or mortar, so keep it clear of both. Within 500 m of the sea, or in an agricultural shed, face the foil into an enclosed unvented air space. Foil insulation is electrically conductive and installation carries real risk, so follow the AFIA work method statements.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"1500 mm x 30 m (45 m²)","offer_id":45348799840438,"sku":"TSTBGP-45","price":393.0,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 20 m (30 m²)","offer_id":45385995419830,"sku":"TSTBGP-30","price":298.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/trade-select-thermalbreak-7-foil-insulation-768x977.jpg?v=1786405525"},{"product_id":"bradford-enviroseal-cw-wall-wrap","title":"Bradford Enviroseal CW Wall Wrap","description":"\u003cp\u003eBradford Enviroseal CW is the commercial weight Class 4 vapour permeable wall wrap: a higher GSM triple layer spun bond with more tear and puncture resistance than the RW grades, while still being light to handle.\u003c\/p\u003e\n\u003ch3\u003eWhere the extra weight pays\u003c\/h3\u003e\n\u003cp\u003eCommercial walls stand wrapped longer, take more traffic from other trades, and sit higher in the wind. The failure mode is almost always mechanical damage before cladding, not a performance shortfall. A tougher membrane survives that stage, which is the practical reason to specify CW over the lighter grades.\u003c\/p\u003e\n\u003ch3\u003eTwo options\u003c\/h3\u003e\n\u003cp\u003eCW Wall Wrap and CW-IT with integrated tape, both 1500 mm x 50 m covering 75 m². The IT version carries its own tape strip, which speeds up sealing and takes one consumable off the site list.\u003c\/p\u003e\n\u003ch3\u003eStill a breather\u003c\/h3\u003e\n\u003cp\u003eClass 4 permeability, so the wall can dry outward while the membrane blocks liquid water and draughts once taped and sealed. Non-reflective, so no air gap is required in front of it.\u003c\/p\u003e\n\u003cp\u003eSuitable for BAL 12.5 through to Flame Zone when installed to specification. Sizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"CW Wall Wrap, 1500 mm x 50 m (75 m²)","offer_id":45351447134390,"sku":"114175","price":452.0,"currency_code":"AUD","in_stock":true},{"title":"CW-IT Wall Wrap, 1500 mm x 50 m (75 m²)","offer_id":45351447167158,"sku":"134863","price":562.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-enviroseal-cw-wall-wrap.jpg?v=1786540076"},{"product_id":"bradford-thermoseal-metal-roof-and-wall-sarking","title":"Bradford Thermoseal Metal Roof and Wall Sarking","description":"\u003cp\u003eBradford Thermoseal metal roof and wall sarking is a light duty double aluminium laminate with an antiglare outer surface. It goes under metal roof sheeting or behind wall cladding as a second skin.\u003c\/p\u003e\n\u003ch3\u003eWhat it does and what it does not\u003c\/h3\u003e\n\u003cp\u003eTaped and sealed it is a water and air barrier, and it works as a vapour barrier. The semi-reflective face cuts radiant heat and can contribute additional R-value, but only when it faces an air gap. Laid tight against another surface it contributes very little, so the detailing decides the result.\u003c\/p\u003e\n\u003cp\u003eIt is a sarking, not a roofing blanket. If the roof needs bulk insulation and condensation control across the whole plane, that is a \u003ca href=\"\/products\/bradford-anticon-roofing-blanket-light-duty\"\u003eblanket\u003c\/a\u003e, and the two are often used together rather than instead of each other.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003e1350 mm x 30 m covering 40.5 m² and 1350 mm x 60 m covering 81 m². The 60 m roll halves the number of end joins on a long run.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eAntiglare face out, tape the joins, seal the penetrations, keep the air gap on the reflective side. Suitable for BAL 12.5 through to Flame Zone when installed to specification.\u003c\/p\u003e\n\u003cp\u003eSizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1350 mm x 30 m (40.5 m²)","offer_id":45351447298230,"sku":"105871","price":107.0,"currency_code":"AUD","in_stock":true},{"title":"1350 mm x 60 m (81 m²)","offer_id":45351447330998,"sku":"15056","price":214.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-thermoseal-metal-roof-and-wall-sarking.jpg?v=1786540076"},{"product_id":"bradford-thermoseal-wall-wrap-xp","title":"Bradford Thermoseal Wall Wrap XP","description":"\u003cp\u003eBradford Thermoseal Wall Wrap XP is a wall sarking with a semi-reflective antiglare face, aimed at residential and commercial walls in humid climates.\u003c\/p\u003e\n\u003ch3\u003eWhat the antiglare face changes\u003c\/h3\u003e\n\u003cp\u003eA bright foil wrap on a sunlit wall frame is hard to work against, and the glare is worse on a large commercial elevation than on a house. The antiglare face cuts that without giving up the radiant heat function. It is the same idea as an antiglare roofing blanket, applied to a wall.\u003c\/p\u003e\n\u003ch3\u003eIt is still a vapour barrier\u003c\/h3\u003e\n\u003cp\u003eXP limits moisture entry rather than letting vapour through. In a humid climate that cuts both ways, so check the wall build-up rather than assuming a barrier is always the safer option. Where the design needs vapour to escape outward, the vapour permeable \u003ca href=\"\/products\/bradford-enviroseal-rw-wall-wrap\"\u003eEnviroseal\u003c\/a\u003e range is the alternative.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003e1350 mm x 30 m covering 40.5 m² and 1350 mm x 60 m covering 81 m². Medium duty tear resistant laminate, built to sit behind brickwork and cladding long term.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eTape the joins and seal the penetrations. The reflective face needs an air gap in front of it. Suitable for BAL 12.5 through to Flame Zone when installed to specification.\u003c\/p\u003e\n\u003cp\u003eSizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1350 mm x 30 m (40.5 m²)","offer_id":45351449723062,"sku":"125825","price":123.0,"currency_code":"AUD","in_stock":true},{"title":"1350 mm x 60 m (81 m²)","offer_id":45351449755830,"sku":"124652","price":246.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-thermoseal-wall-wrap-xp.jpg?v=1786540208"},{"product_id":"bradford-thermoseal-resiwrap","title":"Bradford Thermoseal Resiwrap","description":"\u003cp\u003eBradford Thermoseal Resiwrap is the extra heavy duty wall wrap in the Thermoseal family, built for high wind and harsh weather sites.\u003c\/p\u003e\n\u003ch3\u003eWhen toughness is the deciding factor\u003c\/h3\u003e\n\u003cp\u003eWall wrap fails on site more often than it fails in service. It gets torn during framing, flogged by wind before the cladding goes on, or punctured by a trade working past it. On an exposed site, or where the frame will stand wrapped for weeks before cladding, the extra duty rating is worth more than any difference in the thermal figures.\u003c\/p\u003e\n\u003ch3\u003eReflective face inward\u003c\/h3\u003e\n\u003cp\u003eThe reflective surface faces inward on this one and works against the air gap behind the cladding. It is also a vapour barrier, so check that a barrier is what your wall build-up wants before specifying it.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003e1350 mm x 30 m covering 40.5 m², 1350 mm x 60 m covering 81 m² and 1500 mm x 30 m covering 45 m². On a big job the 60 m roll means fewer joins, and every join is a place to tape.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eTape the joins, seal the penetrations, keep the air gap. Suitable for BAL 12.5 through to Flame Zone.\u003c\/p\u003e\n\u003cp\u003eSizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1350 mm x 30 m (40.5 m²)","offer_id":45351449919670,"sku":"108879","price":90.0,"currency_code":"AUD","in_stock":true},{"title":"1350 mm x 60 m (81 m²)","offer_id":45351449952438,"sku":"108004","price":179.0,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 30 m (45 m²)","offer_id":45351449985206,"sku":"120121","price":100.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-thermoseal-resiwrap.jpg?v=1786540210"},{"product_id":"bradford-thermoseal-tile-roof-sarking","title":"Bradford Thermoseal Tile Roof Sarking","description":"\u003cp\u003eBradford Thermoseal tile roof sarking is a tear resistant laminate that lays under roof tiles as a protective second skin. Two options, Plain and Plus, both 1500 mm x 30 m covering 45 m².\u003c\/p\u003e\n\u003ch3\u003eWhy a tile roof needs sarking\u003c\/h3\u003e\n\u003cp\u003eA tile roof is not a sealed surface. Wind driven rain, dust and embers can all get past the tiles, and the sarking is what stops them reaching the roof space. It also cuts the draughts that move through a tiled roof and reflects radiant heat off the underside of the tiles.\u003c\/p\u003e\n\u003ch3\u003eBarrier performance\u003c\/h3\u003e\n\u003cp\u003eWater barrier and Class 2 vapour barrier. Suitable for BAL 12.5 through to Flame Zone when installed to specification, which matters in tile roofing because the tile gaps are exactly the ember path a bushfire rating is worried about.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eRoll it out across the battens before tiling and lap it down the slope so water runs over a join rather than into it. It is a tough laminate, so it takes the handling that comes with working across a battened roof.\u003c\/p\u003e\n\u003cp\u003eSizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"Plain, 1500 mm x 30 m (45 m²)","offer_id":45351462764726,"sku":"15110","price":176.0,"currency_code":"AUD","in_stock":true},{"title":"Plus, 1500 mm x 30 m (45 m²)","offer_id":45351462797494,"sku":"27308","price":180.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-thermoseal-tile-roof-sarking.jpg?v=1786540458"},{"product_id":"bradford-enviroseal-tuff-wall-wrap-and-roof-sarking","title":"Bradford Enviroseal Tuff Wall Wrap and Roof Sarking","description":"\u003cp\u003eBradford Enviroseal Tuff is a breathable air and water barrier rated for both roof sarking and wall wrap. It is the roof-capable member of the Enviroseal family, aimed at condensation control under the roof as well as weather defence during construction.\u003c\/p\u003e\n\u003ch3\u003eWhy a roof needs a breather too\u003c\/h3\u003e\n\u003cp\u003eWarm moist air rises. When it meets the cold underside of roof sheeting it condenses, and a roof sarking that traps that moisture keeps it in the roof cavity instead of letting it move on. A breathable membrane lets the vapour through while still stopping wind driven rain from getting into the cavity. \u003ca href=\"\/blogs\/blog\/metal-roof-condensation-australia\"\u003eCondensation in metal roofs\u003c\/a\u003e covers the mechanism in detail.\u003c\/p\u003e\n\u003ch3\u003eThree options\u003c\/h3\u003e\n\u003cp\u003eEnviroseal HTS, Enviroseal HTS-IT with integrated tape, and Enviroseal Tuff, all 1500 mm x 30 m covering 45 m². The IT version carries its own tape strip for faster, neater sealing.\u003c\/p\u003e\n\u003ch3\u003eBushfire\u003c\/h3\u003e\n\u003cp\u003eSuitable for all BAL regions, which is broader than most membranes in the range and makes it a straightforward choice on a bushfire rated site.\u003c\/p\u003e\n\u003cp\u003eSizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"Enviroseal HTS, 1500 mm x 30 m (45 m²)","offer_id":45351465189558,"sku":"185381","price":357.0,"currency_code":"AUD","in_stock":true},{"title":"Enviroseal HTS-IT with tape, 1500 mm x 30 m (45 m²)","offer_id":45351465222326,"sku":"190904","price":402.0,"currency_code":"AUD","in_stock":true},{"title":"Enviroseal Tuff, 1500 mm x 30 m (45 m²)","offer_id":45351465255094,"sku":"487982","price":357.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-enviroseal-tuff-wall-wrap-and-roof-sarking.jpg?v=1786540542"},{"product_id":"bradford-thermoseal-wall-breather-class-4","title":"Bradford Thermoseal Wall Breather Class 4","description":"\u003cp\u003eBradford Thermoseal Wall Breather Class 4 is the unusual one in the Thermoseal range: a reflective foil faced wrap that is also Class 4 vapour permeable. Light duty reinforced laminate, made for brick veneer walls.\u003c\/p\u003e\n\u003ch3\u003eReflective and breathable at once\u003c\/h3\u003e\n\u003cp\u003eMost wraps make you choose. A foil wrap gives you a radiant heat barrier but holds vapour in. A spun bond breather lets vapour out but does nothing radiant. This one does both jobs: the foil faces the air gap and reflects, while the Class 4 permeability lets water vapour escape rather than accumulating in the wall. In a brick veneer wall, where the cavity behind the brick is exactly where moisture likes to sit, that combination is the point. \u003ca href=\"\/blogs\/blog\/metal-roof-condensation-australia\"\u003eCondensation and what NCC 2022 asks for\u003c\/a\u003e covers why permeability moved up the priority list.\u003c\/p\u003e\n\u003ch3\u003eTwo products, four rolls\u003c\/h3\u003e\n\u003cp\u003eThermoplast Class 4 and Thermoseal, each in 1350 mm x 30 m covering 40.5 m² and 1350 mm x 60 m covering 81 m².\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eKeep the air gap in front of the foil, or the reflective half of the product stops contributing. Suitable for BAL 12.5 through to Flame Zone when installed to specification.\u003c\/p\u003e\n\u003cp\u003eSizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"Thermoplast Class 4, 1350 mm x 30 m (40.5 m²)","offer_id":45351475118262,"sku":"486520","price":147.0,"currency_code":"AUD","in_stock":true},{"title":"Thermoplast Class 4, 1350 mm x 60 m (81 m²)","offer_id":45351475151030,"sku":"486521","price":294.0,"currency_code":"AUD","in_stock":true},{"title":"Thermoseal, 1350 mm x 30 m (40.5 m²)","offer_id":45351475183798,"sku":"101254","price":147.0,"currency_code":"AUD","in_stock":true},{"title":"Thermoseal, 1350 mm x 60 m (81 m²)","offer_id":45351475216566,"sku":"15123","price":294.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-thermoseal-wall-breather-class-4.jpg?v=1786540649"},{"product_id":"bradford-enviroseal-rw-plus-wall-wrap","title":"Bradford Enviroseal RW Plus Wall Wrap","description":"\u003cp\u003eBradford Enviroseal RW Plus is a Class 4 vapour permeable wall wrap, light duty triple layer spun bond, non-reflective. Same family as RW with a wider range of roll sizes.\u003c\/p\u003e\n\u003ch3\u003eChoose it for the roll size\u003c\/h3\u003e\n\u003cp\u003eThe performance story is the same as \u003ca href=\"\/products\/bradford-enviroseal-rw-wall-wrap\"\u003eEnviroseal RW\u003c\/a\u003e: Class 4 permeability so the wall can dry outward, plus a weather and draught barrier once taped and sealed. Where RW Plus earns its place is the size range. It runs from 1350 mm x 30 m at 41 m² through 1500 mm rolls in 30 m and 50 m, up to 2750 mm x 25 m at 68.75 m² and 3000 mm x 25 m at 75 m².\u003c\/p\u003e\n\u003ch3\u003eWide rolls remove joins\u003c\/h3\u003e\n\u003cp\u003eEvery horizontal join in a wall wrap is a line that has to be lapped and taped correctly to keep working. A roll tall enough to run a full storey removes that line entirely, which is worth more on a large elevation than the material saving.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eTape the joins and seal the penetrations. Non-reflective, so no air gap is needed in front of it. Suitable for BAL 12.5 through to Flame Zone when installed to specification.\u003c\/p\u003e\n\u003cp\u003eSizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1350 mm x 30 m (41 m²)","offer_id":45351476920502,"sku":"483000","price":157.0,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 30 m (45 m²)","offer_id":45351476953270,"sku":"478759","price":174.0,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 50 m (75 m²)","offer_id":45351476986038,"sku":"485832","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"2750 mm x 25 m (68.75 m²)","offer_id":45351477018806,"sku":"481184","price":266.0,"currency_code":"AUD","in_stock":true},{"title":"3000 mm x 25 m (75 m²)","offer_id":45351477051574,"sku":"481185","price":290.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-enviroseal-rw-plus-wall-wrap.jpg?v=1786540741"},{"product_id":"bradford-enviroseal-rw-wall-wrap","title":"Bradford Enviroseal RW Wall Wrap","description":"\u003cp\u003eBradford Enviroseal RW is a Class 4 vapour permeable wall wrap, a light duty triple layer spun bond membrane. Non-reflective, and built around condensation control rather than radiant heat.\u003c\/p\u003e\n\u003ch3\u003eWhy permeable\u003c\/h3\u003e\n\u003cp\u003eA wall that cannot dry outward holds whatever moisture gets into it, and moisture in a wall cavity is how framing and linings get damaged quietly over years. Class 4 permeability lets water vapour move out through the wrap while the membrane still blocks liquid water and draughts from outside. \u003ca href=\"\/blogs\/blog\/metal-roof-condensation-australia\"\u003eCondensation and what NCC 2022 asks for\u003c\/a\u003e explains the mechanism and why this became a bigger deal in recent code cycles.\u003c\/p\u003e\n\u003ch3\u003eSizes, including wide rolls\u003c\/h3\u003e\n\u003cp\u003e1500 mm x 30 m covering 45 m², 1500 mm x 50 m covering 75 m², 2750 mm x 25 m covering 68.75 m², 3000 mm x 25 m covering 75 m², and an RW-IT version with integrated tape at 1500 mm x 50 m. The 2750 and 3000 mm rolls cover a full storey height in one run, which removes horizontal joins on a commercial elevation.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eTape and seal it to work as a weather barrier. Being non-reflective, it does not need an air gap in front of it. Suitable for BAL 12.5 through to Flame Zone when installed to specification.\u003c\/p\u003e\n\u003cp\u003eSizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"RW Wall Wrap, 1500 mm x 30 m (45 m²)","offer_id":45351479902390,"sku":"167641","price":174.0,"currency_code":"AUD","in_stock":true},{"title":"RW Wall Wrap, 1500 mm x 50 m (75 m²)","offer_id":45351479935158,"sku":"118153","price":425.0,"currency_code":"AUD","in_stock":true},{"title":"RW Wall Wrap, 2750 mm x 25 m (68.75 m²)","offer_id":45351479967926,"sku":"138628","price":266.0,"currency_code":"AUD","in_stock":true},{"title":"RW Wall Wrap, 3000 mm x 25 m (75 m²)","offer_id":45351480000694,"sku":"155884","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"RW-IT Wall Wrap, 1500 mm x 50 m (75 m²)","offer_id":45351480033462,"sku":"165532","price":412.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-enviroseal-rw-wall-wrap.jpg?v=1786540831"},{"product_id":"bradford-thermoseal-wall-wrap","title":"Bradford Thermoseal Wall Wrap","description":"\u003cp\u003eBradford Thermoseal Wall Wrap is a reflective foil faced wall sarking. It is a medium duty tear resistant laminate that acts as a second skin behind the cladding, adds a radiant heat barrier, and works as a vapour barrier.\u003c\/p\u003e\n\u003ch3\u003eBarrier or breather, decide this first\u003c\/h3\u003e\n\u003cp\u003eThermoseal is a vapour barrier. It holds moisture out, and it also holds moisture in. That is the right answer in some wall build-ups and the wrong answer in others, which is why the Enviroseal range exists as the vapour permeable alternative. Getting this choice wrong is how walls end up holding water they cannot shed. \u003ca href=\"\/blogs\/blog\/metal-roof-condensation-australia\"\u003eCondensation, and what NCC 2022 asks for\u003c\/a\u003e covers the reasoning.\u003c\/p\u003e\n\u003ch3\u003ePlain or Prime\u003c\/h3\u003e\n\u003cp\u003eBoth facings are stocked in the same roll sizes, so this is a specification and appearance choice rather than a performance step.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003e1350 mm x 30 m covering 40.5 m², 1350 mm x 60 m covering 81 m², and 1500 mm x 30 m covering 45 m², in either facing.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eThe reflective face needs an air gap in front of it to do anything, so orientation matters. Tape the joins and seal the penetrations, since an untaped wrap is not a weather barrier. Suitable for BAL 12.5 through to Flame Zone when installed to specification.\u003c\/p\u003e\n\u003cp\u003eSizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"Plain, 1350 mm x 30 m (40.5 m²)","offer_id":45351485112502,"sku":"40483","price":139.0,"currency_code":"AUD","in_stock":true},{"title":"Plain, 1350 mm x 60 m (81 m²)","offer_id":45351485145270,"sku":"15128","price":277.0,"currency_code":"AUD","in_stock":true},{"title":"Plain, 1500 mm x 30 m (45 m²)","offer_id":45351485178038,"sku":"40514","price":154.0,"currency_code":"AUD","in_stock":true},{"title":"Prime, 1350 mm x 30 m (40.5 m²)","offer_id":45351485210806,"sku":"169161","price":147.0,"currency_code":"AUD","in_stock":true},{"title":"Prime, 1350 mm x 60 m (81 m²)","offer_id":45351485243574,"sku":"169232","price":294.0,"currency_code":"AUD","in_stock":true},{"title":"Prime, 1500 mm x 30 m (45 m²)","offer_id":45351485276342,"sku":"178641","price":164.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-thermoseal-wall-wrap.jpg?v=1786541042"},{"product_id":"trade-select-wall-wrap","title":"Trade Select Wall Wrap","description":"\u003cp\u003eTrade Select Wall Wrap is a single sided reflective wall wrap from Ametalin, stocked in Light Duty and Medium Duty, each in 1350 mm and 1500 mm widths and 30 m or 60 m rolls. It is a Class 2 vapour barrier, so it holds moisture out of the frame rather than letting it pass through.\u003c\/p\u003e\n\u003ch3\u003eBarrier wrap or breather wrap\u003c\/h3\u003e\n\u003cp\u003eThis is the barrier version. It is an air barrier, a water barrier and a Class 2 vapour barrier at the same time, which suits Climate Zones 1 to 5 and any wall where the design intent is to keep vapour on the outside. If the wall needs to dry outward, the vapour permeable version is the \u003ca href=\"\/products\/trade-select-wall-wrap-breather\"\u003eWall Wrap Micro-perforated\u003c\/a\u003e instead. Getting that choice wrong is the single most common condensation problem in a new wall, so check the climate zone before ordering.\u003c\/p\u003e\n\u003ch3\u003eLight Duty or Medium Duty\u003c\/h3\u003e\n\u003cp\u003eBoth grades carry the same barrier classifications. The difference is strength while the frame stands exposed. Light Duty is tested at 8.9 kN\/m machine direction against a 7.5 kN\/m minimum. Medium Duty runs 11.8 kN\/m against a 9.5 kN\/m minimum, and its edge tear is 500 N against 375 N. On a windy site, a long build program, or a frame other trades will be working past, Medium Duty is the one that survives.\u003c\/p\u003e\n\u003ch3\u003eThe foil side needs an air gap\u003c\/h3\u003e\n\u003cp\u003eFoil emittance is 0.03 and the printed face is 0.90. That 97% reflective face only earns its R-value when it faces a cavity, so a wrap pressed flat against cladding gives you the barrier performance and none of the reflective gain. Ametalin declare a total system R-value of 1.01 winter and 0.92 summer for lightweight cladding direct to stud, and 2.93 winter with an R2.7 batt in a brick veneer wall.\u003c\/p\u003e\n\u003ch3\u003eFire\u003c\/h3\u003e\n\u003cp\u003eFlammability index Low, at or below 5, with a Group 1 fire performance classification for wall and ceiling lining. It complies with AS 3959-2018 for use in all Bushfire Attack Levels. Take independent advice on sarking selection before locking in a BAL design.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eLap and tape the joins and seal around penetrations, or the wrap is not a barrier at all. The material is electrically conductive, so keep it clear of wiring. Install to AS 4200.2. Full figures for both duties are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"Light Duty \/ 1350 mm x 30 m (40.5 m²)","offer_id":45385983754422,"sku":"TSLD-40","price":55.1,"currency_code":"AUD","in_stock":true},{"title":"Light Duty \/ 1350 mm x 60 m (81 m²)","offer_id":45385983787190,"sku":"TSLD-81","price":106.0,"currency_code":"AUD","in_stock":true},{"title":"Light Duty \/ 1500 mm x 30 m (45 m²)","offer_id":45385983819958,"sku":"TSLD-45","price":60.8,"currency_code":"AUD","in_stock":true},{"title":"Light Duty \/ 1500 mm x 60 m (90 m²)","offer_id":45385983852726,"sku":"TSLD-90","price":117.0,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1350 mm x 30 m (40.5 m²)","offer_id":45385983885494,"sku":"TSMD-40","price":67.0,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1350 mm x 60 m (81 m²)","offer_id":45385983918262,"sku":"TSMD-81","price":125.0,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1500 mm x 30 m (45 m²)","offer_id":45385983951030,"sku":"TSMD-45","price":70.0,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1500 mm x 60 m (90 m²)","offer_id":45385983983798,"sku":"TSMD-90","price":132.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Wall-Wrap-MD-Product-Roll-1024x1024-Trade-Select.jpg?v=1787844514"},{"product_id":"trade-select-sarking-hd","title":"Trade Select Sarking HD","description":"\u003cp\u003eTrade Select Sarking HD is the heavy duty grade of Ametalin's single sided reflective membrane, used as roof sarking and as a wall wrap on jobs that need the extra strength. Five roll sizes, including a 1200 mm width that suits standard rafter spacings.\u003c\/p\u003e\n\u003ch3\u003eWhere the heavy duty grade earns its money\u003c\/h3\u003e\n\u003cp\u003eTensile strength is 13.9 kN\/m machine direction against a 12.5 kN\/m minimum, and edge tear is 586 N against an 80 N minimum. Sarking spends its working life stretched over rafters and walked on by roofers, so tear resistance is the property that decides whether the roll survives the day it goes on.\u003c\/p\u003e\n\u003ch3\u003eNon-combustible use\u003c\/h3\u003e\n\u003cp\u003eSarking-type materials no thicker than 1 mm with a flammability index of 5 or less can be used where non-combustible material is required. This one is 0.12 mm with a Low flammability index, and Ametalin state it complies with the Deemed-to-Satisfy provisions for non-combustible building elements. It also complies with AS 3959-2018 for all Bushfire Attack Levels.\u003c\/p\u003e\n\u003ch3\u003eVapour barrier, so check the roof design\u003c\/h3\u003e\n\u003cp\u003eThis is a Class 2 vapour barrier at 0.004 µg\/N·s, which is a genuinely tight membrane. Under a metal roof in a cold or mixed climate that can be exactly wrong, because the roof then has no way to dry upward. If the design calls for a permeable underlay, use \u003ca href=\"\/products\/trade-select-vapourtech-brane-vhp\"\u003eVapourTech Brane VHP\u003c\/a\u003e instead. Our article on \u003ca href=\"\/blogs\/blog\/metal-roof-condensation-australia\"\u003emetal roof condensation\u003c\/a\u003e sets out the reasoning.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eAmetalin declare RT 0.93 winter and RT 1.51 summer for an unventilated 22 degree residential roof, and RT 2.75 winter for battened out lightweight cladding with an R2.7 batt. The foil face needs an air gap to deliver that. The membrane is electrically conductive, so keep it clear of wiring. Install to AS 4200.2. Full figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"1200 mm x 60 m (72 m²)","offer_id":45385984966838,"sku":"TSHD-72","price":117.0,"currency_code":"AUD","in_stock":true},{"title":"1350 mm x 30 m (40.5 m²)","offer_id":45385984999606,"sku":"TSHD-40","price":73.15,"currency_code":"AUD","in_stock":true},{"title":"1350 mm x 60 m (81 m²)","offer_id":45385985032374,"sku":"TSHD-81","price":145.0,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 30 m (45 m²)","offer_id":45385985065142,"sku":"TSHD-45","price":77.9,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 60 m (90 m²)","offer_id":45385985097910,"sku":"TSHD-90","price":156.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/REFLECTIVE-WALL-WRAPS-drive1.jpg?v=1787844635"},{"product_id":"trade-select-sarking-xr-hd","title":"Trade Select Sarking xR HD","description":"\u003cp\u003eTrade Select Sarking xR HD is the double sided reflective version of Ametalin's heavy duty sarking. Both faces are low emittance, 0.05 on the anti-glare side and 0.03 on the foil side, which is where the extra R-value in the name comes from.\u003c\/p\u003e\n\u003ch3\u003eTwo reflective faces, two air gaps\u003c\/h3\u003e\n\u003cp\u003eA single sided sarking only works against the cavity it faces. With both faces reflective, a roof that has an air space above and below the membrane gets a contribution from each side. Ametalin declare RT 1.14 winter and RT 1.82 summer for an unventilated 22 degree residential roof, against RT 0.93 and RT 1.51 for the standard \u003ca href=\"\/products\/trade-select-sarking-hd\"\u003eSarking HD\u003c\/a\u003e. Battened out lightweight cladding with an R2.7 batt is declared at RT 3.00 winter.\u003c\/p\u003e\n\u003ch3\u003eStill a heavy duty membrane\u003c\/h3\u003e\n\u003cp\u003eTensile strength 12.8 kN\/m machine direction against a 12.5 kN\/m minimum, edge tear 507 N against 80 N, nominal thickness 0.17 mm. Class 2 vapour barrier at 0.02141 µg\/N·s, water barrier and air barrier.\u003c\/p\u003e\n\u003ch3\u003eFire\u003c\/h3\u003e\n\u003cp\u003eFlammability index Low, at or below 5, and compliant with AS 3959-2018 for use in all BALs. Note that at 0.17 mm it is still under the 1 mm limit, but Ametalin do not claim the non-combustible construction concession on this sheet the way they do for Sarking HD, so do not assume it.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eBoth faces are reflective, so an installation that presses the membrane flat on both sides throws away most of what you paid for. Batten it out or run it over a spacer. It is electrically conductive, so keep it clear of wiring. Install to AS 4200.2. Full figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"1350 mm x 60 m (81 m²)","offer_id":45385985130678,"sku":"TSHD-XR-81","price":214.0,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 30 m (45 m²)","offer_id":45385985163446,"sku":"TSHD-XR-45","price":121.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Trade-Select-Sarking-xR-HD.jpg?v=1787844637"},{"product_id":"trade-select-sarking-tre-tile-roof-extra","title":"Trade Select Sarking TRE Tile Roof Extra","description":"\u003cp\u003eTrade Select Sarking TRE is the Tile Roof Extra grade, an extra heavy duty radiant barrier made for sarking under a tiled roof. One size, 1500 mm x 30 m covering 45 m².\u003c\/p\u003e\n\u003ch3\u003eBuilt for the loads a tile roof puts on sarking\u003c\/h3\u003e\n\u003cp\u003eTensile strength is 23.7 kN\/m machine direction against a 13.0 kN\/m minimum, and 21.9 kN\/m lateral against 10.5. Edge tear is 1040 N and 994 N against a 90 N minimum. Those are large margins by any measure, and they are there because tile battens are fixed straight through the sarking and tilers work on top of it. Nominal thickness is 0.22 mm, the thickest membrane in the Trade Select range.\u003c\/p\u003e\n\u003ch3\u003eWhat it does in the roof\u003c\/h3\u003e\n\u003cp\u003eIt is a Class 2 vapour barrier at 0.012 µg\/N·s, a water barrier and an air barrier. Under tiles that combination stops wind driven rain and dust getting into the roof space through the tile laps, which is the usual failure a tiled roof has without sarking. Ametalin declare RT 0.93 winter and RT 1.51 summer for an unventilated 22 degree residential roof.\u003c\/p\u003e\n\u003ch3\u003eFire\u003c\/h3\u003e\n\u003cp\u003eFlammability index Low, at or below 5, and compliant with AS 3959-2018 for use in all BALs.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eDrape it over the rafters with a slight sag so any water that gets past a tile runs to the gutter rather than pooling on a batten. The foil face is 0.03 emittance and needs the air space under the tiles to work. It is electrically conductive, so keep it clear of wiring. Install to AS 4200.2. Full figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"1500 mm x 30 m (45 m²)","offer_id":45385986277558,"sku":"TSTRE-45","price":134.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Sarking-TRE-Product-Shot-1024-x1024-Trade-Select.jpg?v=1787844731"},{"product_id":"trade-select-sarking-hvb","title":"Trade Select Sarking HVB High Vapour Barrier","description":"\u003cp\u003eTrade Select Sarking HVB is the tightest membrane Ametalin make in this range. Class 1 vapour barrier at 0.002 µg\/N·s, extra heavy duty, one size at 1350 mm x 60 m covering 81 m².\u003c\/p\u003e\n\u003ch3\u003eClass 1 is a different order of tightness\u003c\/h3\u003e\n\u003cp\u003eThe vapour classes run 1 to 4, with Class 1 the tightest barrier and Class 4 the most permeable. Most reflective sarkings sit at Class 2. HVB is Class 1, roughly twice as tight again as the standard \u003ca href=\"\/products\/trade-select-sarking-hd\"\u003eSarking HD\u003c\/a\u003e. That is what you want over a cool room, a swimming pool hall, a food processing area or any building where the inside carries far more vapour than the outside and it must not reach the structure.\u003c\/p\u003e\n\u003ch3\u003eExtra heavy duty\u003c\/h3\u003e\n\u003cp\u003eTensile strength 15.2 kN\/m machine direction against a 13.0 kN\/m minimum, edge tear 646 N against 90 N, nominal thickness 0.17 mm.\u003c\/p\u003e\n\u003ch3\u003eWhere it is the wrong choice\u003c\/h3\u003e\n\u003cp\u003eA Class 1 barrier on the outside of a wall that also has a vapour barrier on the inside traps moisture between them with no way out. HVB belongs on the warm side of the insulation, or in a roof detail designed around it. If the assembly is meant to dry outward, use a permeable membrane such as \u003ca href=\"\/products\/trade-select-vapourtech-brane-vhp\"\u003eVapourTech Brane VHP\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eAmetalin declare RT 0.93 winter and RT 1.51 summer for an unventilated 22 degree residential roof, and RT 2.93 winter for a brick veneer wall with an R2.7 batt. Tape every join and seal every penetration, because a Class 1 barrier with holes in it is not a Class 1 barrier. It is electrically conductive, so keep it clear of wiring. Full figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"1350 mm x 60 m (81 m²)","offer_id":45385986310326,"sku":"TSXHD-HVB-81","price":187.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Sarking-HVB-Product-Shot-1024x1024-Trade-Select.jpg?v=1787844732"},{"product_id":"trade-select-wall-wrap-xr-micro-perforated-hd","title":"Trade Select Wall Wrap xR Micro-perforated HD","description":"\u003cp\u003eTrade Select Wall Wrap xR Micro-perforated HD is the wall wrap Ametalin built for brick veneer and drained cavity walls. It is vapour permeable and double sided reflective at the same time, which is an unusual combination and the reason it costs more than a plain breather wrap.\u003c\/p\u003e\n\u003ch3\u003ePermeable and reflective together\u003c\/h3\u003e\n\u003cp\u003eThe micro-perforation pattern gives Class 4 vapour permeance at 1.450 µg\/N·s, so indoor water vapour can pass out into the cavity rather than condensing inside the wall. Both faces are reflective, 0.05 anti-glare and 0.03 foil, so the cavity between the frame and the brick leaf turns into a reflective air space. Ametalin declare RT 1.72 winter for a brick veneer wall with the wrap alone, and RT 3.40 winter with an R2.7 batt added.\u003c\/p\u003e\n\u003ch3\u003eNot a water barrier\u003c\/h3\u003e\n\u003cp\u003eRead this part carefully. It is classified Non-Water Barrier. Perforating a membrane to let vapour out also lets liquid water through, so this belongs behind a masonry leaf or a drained cavity where the outer skin sheds the rain. It is not the wrap for a direct fixed cladding wall. Use the Class 2 \u003ca href=\"\/products\/trade-select-wall-wrap\"\u003eTrade Select Wall Wrap\u003c\/a\u003e or the \u003ca href=\"\/products\/trade-select-wall-wrap-breather\"\u003eWall Wrap Micro-perforated\u003c\/a\u003e range there instead.\u003c\/p\u003e\n\u003ch3\u003eHeavy duty\u003c\/h3\u003e\n\u003cp\u003eTensile strength 15.3 kN\/m machine direction against a 12.5 kN\/m minimum, edge tear 499 N against 80 N, thickness 0.12 mm. It is an air barrier, and flammability index is Low, at or below 5, with compliance to AS 3959-2018 for all BALs.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eKeep the cavity clear so the reflective faces have air in front of them and the drainage path stays open. The wrap is electrically conductive, so keep it clear of wiring. Install to AS 4200.2. Full figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"1350 mm x 30 m (40.5 m²)","offer_id":45385987227830,"sku":"TSHD-XR-40-B","price":132.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Trade-Select-Wall-Wrap-xR-Micro-perforated.jpg?v=1787844809"},{"product_id":"trade-select-firesark-micro-perforated","title":"Trade Select FireSark® Micro-perforated","description":"\u003cp\u003eTrade Select FireSark Micro-perforated is the vapour permeable version of Ametalin's non-combustible sarking. Non-combustible E-glass fabric bonded to 97% reflective aluminium foil, perforated so water vapour can pass through. 1350 mm x 30 m covering 40.5 m².\u003c\/p\u003e\n\u003ch3\u003eNon-combustible and permeable at the same time\u003c\/h3\u003e\n\u003cp\u003eMost vapour permeable membranes are polymer based, and polymer burns. This one is not deemed combustible to AS 1530.1, with early fire hazard indices of 0, 0, 0 and 2, and it complies with the NCC Deemed-to-Satisfy provisions for non-combustible construction. It is also rated for use in all BAL zones under AS 3959. If a commercial facade or a Flame Zone job needs both a breather membrane and non-combustible material, this is the product that does both.\u003c\/p\u003e\n\u003ch3\u003eBarrier vs breather\u003c\/h3\u003e\n\u003cp\u003eClass 3 vapour permeable at 0.8698 µg\/N·s. It is an air barrier but it is classified Non-Water Barrier, so it needs a drained cavity or an outer skin that sheds rain. The solid vapour barrier version is \u003ca href=\"\/products\/trade-select-firesark\"\u003eTrade Select FireSark\u003c\/a\u003e, which is a Class 2 barrier and a water barrier.\u003c\/p\u003e\n\u003ch3\u003eVery strong for a membrane\u003c\/h3\u003e\n\u003cp\u003eTensile strength 58 kN\/m machine direction against a 13.0 kN\/m minimum, and 26 kN\/m lateral against 10.5. Extra Heavy duty to AS\/NZS 4200.1:2017. Thickness 0.20 mm.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eAmetalin declare RT 3.18 winter for an aerated concrete clad wall with an R2.5 batt, and RT 2.93 winter for a brick veneer wall with an R2.7 batt. The foil face is 0.03 emittance and needs an air gap. The material is electrically conductive, so keep it clear of wiring. Full figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"1350 mm x 30 m (40.5 m²)","offer_id":45385987260598,"sku":"TSFS-40-B","price":233.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/FireSark-Micro-perforated-Product-Shot-1024x1024-Trade-Select.jpg?v=1787844809"},{"product_id":"rhino-wrap-rp-51","title":"Rhino Wrap RP-51 Class 2 Heavy Duty Reflective Wall Wrap","description":"\u003cp\u003eRhino Wrap RP-51 is a heavy duty reflective wall wrap from Thor Building Products, rated Class 2, Vapour Barrier and Water Barrier. Aluminium foil is bonded to a reinforcing polymer mesh, treated blue to reduce glare. Thor list it for residential and commercial walls.\u003c\/p\u003e\n\u003ch3\u003eCheck the climate zone first\u003c\/h3\u003e\n\u003cp\u003eNCC 2022 sets a minimum vapour permeance for a membrane outside the insulation in the external wall of a house, apartment or Class 4 part of a building: 0.143 µg\/N·s in climate zones 4 and 5, and 1.140 µg\/N·s in zones 6 to 8. A Class 2 vapour barrier meets that deemed-to-satisfy rule only in zones 1 to 3, and Melbourne and Sydney are outside them. For a brick veneer house there, look at \u003ca href=\"\/products\/trade-select-wall-wrap-xr-micro-perforated-hd\"\u003eTrade Select Wall Wrap xR Micro-perforated HD\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eR-value and fire rating\u003c\/h3\u003e\n\u003cp\u003eThor state that up to R1.1 may be added to the wall system behind brick veneer or other cladding with a drained cavity, and recommend at least 20 mm of air space against the foil face. Flammability index is Low (≤5). It is suitable for BAL 12.5 to FZ under AS 3959 section 3.10, except exposed installations in fire control rooms or fire-isolated exits.\u003c\/p\u003e\n\u003ch3\u003eRoll and site notes\u003c\/h3\u003e\n\u003cp\u003eEach 1350 mm x 60 m roll covers 81 m². Install to AS\/NZS 4200.2 and clad as soon as you can. Store rolls dry, keep wet concrete and mortar off the wrap and allow for up to 2% shrinkage. The foil conducts electricity, so keep it clear of wiring. Full figures are in the table below.\u003c\/p\u003e","brand":"Rhino","offers":[{"title":"1350 mm x 60 m (81 m²)","offer_id":67636087816374,"sku":"RP-51-60","price":123.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/RP-51-1.jpg?v=1791897626"},{"product_id":"rhino-multi-purpose-wall-wrap-roof-sarking","title":"Rhino Multi Purpose RP-51-WR Reflective Wall Wrap and Roof Sarking","description":"\u003cp\u003eRhino Multi Purpose RP-51-WR is a reflective foil laminate from Thor Building Products, rated a Class 2 Vapour Barrier and a Water Barrier, for wall wrap and roof sarking. The foil is bonded to a reinforcing polymer mesh treated blue to cut glare. Each roll is 1350 mm x 60 m, covering 81 m².\u003c\/p\u003e\n\u003ch3\u003eWind and added R-value\u003c\/h3\u003e\n\u003cp\u003eThor call it a heavier product, better suited to walls in high wind locations. By their figures it can add up to R1.1 to a wall behind brick veneer or timber cladding and up to R1.3 to a roof insulation system. Reaching those figures takes at least 20 mm of air space next to the foil face.\u003c\/p\u003e\n\u003ch3\u003eClimate zone limits on walls\u003c\/h3\u003e\n\u003cp\u003eUnder NCC 2022, a membrane outside the insulation in a house or apartment wall needs at least 0.143 µg\/N.s in climate zones 4 and 5, and 1.140 µg\/N.s in zones 6 to 8. This one is a vapour barrier at 0.011 µg\/N.s, so as a wall wrap it meets the deemed-to-satisfy rule in zones 1 to 3 only. Melbourne is zone 6. See our guide to \u003ca href=\"\/blogs\/blog\/choosing-wall-wrap-and-sarking\"\u003echoosing wall wrap and sarking\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eFire and site notes\u003c\/h3\u003e\n\u003cp\u003eIt is rated BAL 12.5 to FZ under AS 3959, section 3.10, except in exposed installations in fire control rooms or fire-isolated exits. Install to AS\/NZS 4200.2, with a 40 mm sag between trusses under a roof. Clad as soon as possible, keep the rolls dry and allow for up to 2% shrinkage. Full figures are in the table below.\u003c\/p\u003e","brand":"Rhino","offers":[{"title":"1350 mm x 60 m (81 m²)","offer_id":67636087849142,"sku":"RP-51WR-60","price":123.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/thor_RP-51-WR_crop-top.jpg?v=1791897625"},{"product_id":"rhino-primo-wrap","title":"Rhino Primo Wrap Class 2 Reflective Foil Wall Wrap","description":"\u003cp\u003eRhino Primo Wrap (RP-51-PM) is a single sided reflective foil wall wrap from Thor Building Products, made for brick veneer and fibre cement walls. It is medium duty, with a Class 2 Vapour Barrier rating and a Water Barrier classification. Thor list it for BAL 12.5 to FZ. One roll is 1350 mm x 60 m and covers 81 m².\u003c\/p\u003e\n\u003ch3\u003eA vapour barrier, so check the climate zone\u003c\/h3\u003e\n\u003cp\u003eThor describe Primo as non-permeable (0.106 µg\/N.s) and recommend it for warmer climates, since a vapour barrier on the cold side of a wall can trap condensation. Under NCC 2022 a house wall wrap must reach 0.143 µg\/N.s in climate zones 4 and 5 and 1.140 µg\/N.s in zones 6 to 8. Primo meets that deemed-to-satisfy rule only in zones 1 to 3, which excludes house walls in Melbourne and Sydney. Use a vapour permeable wrap there, such as \u003ca href=\"\/products\/sisalation-vapawrap\"\u003eSisalation Vapawrap\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat the foil adds\u003c\/h3\u003e\n\u003cp\u003eBehind brick veneer or other cladding with a drained cavity, Thor state up to R1.1 may be added to the wall. For a brick cavity wall with a 90 mm stud and 40 mm cavity, they declare RT 1.2 summer and RT 1.3 winter. Leave at least 20 mm of air space next to the foil face to get there.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eInstall to AS\/NZS 4200.2, seal the overlaps and clad promptly, as the wrap is not made for long weather exposure. The foil conducts electricity, so keep it and any conductive fasteners clear of wiring. Full figures are in the table below.\u003c\/p\u003e","brand":"Rhino","offers":[{"title":"1350 mm x 60 m (81 m²)","offer_id":67636087881910,"sku":"RP-51PM-60","price":123.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/rhino-primo-wrap-foil-roll.jpg?v=1791903993"},{"product_id":"rhino-wrap-breather-rp-51b","title":"Rhino Wrap Breather RP-51B Class 3 Vapour Permeable Foil Wall Wrap","description":"\u003cp\u003eRhino Wrap Breather (RP-51B) is a heavy duty reflective wall wrap from Thor Building Products, rated Class 3, Vapour Permeable. Aluminium foil is bonded to a reinforcing polymer mesh treated blue to cut glare. Thor's selection guide places it in brick veneer walls.\u003c\/p\u003e\n\u003ch3\u003eNot a water barrier\u003c\/h3\u003e\n\u003cp\u003eThor class this perforated wrap as a Non-Water Barrier, so it relies on a drained cavity, which brick veneer has by design. Their condensation guide rules out lightweight cladding in any situation, even with a battened cavity, because perforated non-water barrier products do not meet cladding manufacturers' warranty terms.\u003c\/p\u003e\n\u003ch3\u003eCheck the climate zone first\u003c\/h3\u003e\n\u003cp\u003eFor houses and apartments, NCC 2022 wants a membrane outside the wall insulation to reach 0.143 µg\/N·s in climate zones 4 and 5, and 1.140 µg\/N·s in zones 6, 7 and 8. Class 3 is the minimum for zones 4 and 5. It falls short in zones 6 to 8, Melbourne included, where a Class 4 wrap is the deemed-to-satisfy choice. Our \u003ca href=\"\/blogs\/blog\/choosing-wall-wrap-and-sarking\"\u003ewall wrap buyer guide\u003c\/a\u003e compares the options.\u003c\/p\u003e\n\u003ch3\u003eOrdering and on site\u003c\/h3\u003e\n\u003cp\u003eEach roll is 1350 mm x 60 m and covers 81 m². Install to AS\/NZS 4200.2. Thor recommend at least a 20 mm air space next to the foil face, and say up to R1.1 may be added to the wall system behind brick veneer. Clad as soon as you can, store the rolls dry, keep wet concrete and mortar off the wrap and allow for up to 2% shrinkage. The foil is electrically conductive. Full figures are in the table below.\u003c\/p\u003e","brand":"Rhino","offers":[{"title":"1350 mm x 60 m (81 m²)","offer_id":67636087947446,"sku":"RP-51B-60","price":123.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/RP-51-1_ecb56b53-a74d-4de9-8c42-6b9b047d2b64.jpg?v=1791897632"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/collections\/building-membrane.webp?v=1786446294","url":"https:\/\/awbm.com.au\/collections\/building-membrane.oembed?page=2","provider":"AWBM","version":"1.0","type":"link"}