{"title":"Ametalin Building Membrane","description":"\u003cp\u003eExplore Ametalin building membranes at AWBM, including reflective foil insulation, wall wraps, vapour barriers and sarking trusted on Australian builds. Compare the range and order online for delivery across Australia.\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":"SQ6162271","price":261.48,"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, 1500 mm x 30 m covering 45 m² at 0.45 mm thick. 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\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":"Default Title","offer_id":45225009578166,"sku":"SQ7956783","price":91.91,"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 (41.5 m²)","offer_id":45225009643702,"sku":"SQ2720695","price":72.2,"currency_code":"AUD","in_stock":true},{"title":"1500 mm x 30 m (45 m²","offer_id":45225009676470,"sku":"SQ6938355","price":79.42,"currency_code":"AUD","in_stock":true},{"title":"2740 mm x 30 m (82.2 m²)","offer_id":45225009709238,"sku":"SQ9983546","price":160.78,"currency_code":"AUD","in_stock":true},{"title":"3050 mm x 30 m (91.5 m²)","offer_id":45225009742006,"sku":"SQ5307740","price":175.98,"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-silverfloor","title":"Trade Select SilverFloor®","description":"\u003cp\u003eTrade Select SilverFloor is a double sided reflective foil underfloor insulation, 97% reflective on both faces, in 500 mm and 1500 mm wide rolls of 60 m.\u003c\/p\u003e\n\u003ch3\u003eEnclosing the sub-floor is the big lever\u003c\/h3\u003e\n\u003cp\u003eThe system figures make it plain. In an enclosed unventilated sub-floor Ametalin quotes RT 3.36 in winter and 1.52 in summer. In an unenclosed ventilated sub-floor the same product gives RT 2.05 and 0.77. If the sub-floor can be enclosed, that decision changes the result more than anything else you can specify.\u003c\/p\u003e\n\u003ch3\u003eBuilt for the conditions under a floor\u003c\/h3\u003e\n\u003cp\u003eIt has 5 mm weep holes at 400 mm intervals, so water that does get onto it can drain rather than pool. It is Class 3 vapour permeable and deliberately not a water barrier or air barrier, because under a floor you want moisture to be able to move rather than be trapped against the structure.\u003c\/p\u003e\n\u003ch3\u003eTough enough to work with\u003c\/h3\u003e\n\u003cp\u003eHeavy duty to AS\/NZS 4200.1:2017, with edge tear of 439 N and 452 N against an 80 N minimum, and UV resistance up to 90 days. Sub-floor work is awkward and the membrane takes a beating going in.\u003c\/p\u003e\n\u003ch3\u003eWhich width\u003c\/h3\u003e\n\u003cp\u003eThe 500 mm roll covers 30 m² and suits working between joists single handed. The 1500 mm roll covers 90 m² for open runs. It is electrically conductive, so keep it clear of wiring.\u003c\/p\u003e\n\u003cp\u003eFull figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"500mm x 60m (30 m²)","offer_id":45225009774774,"sku":"SQ9179568","price":80.75,"currency_code":"AUD","in_stock":true},{"title":"1500mm x 60m (90m²)","offer_id":45225009807542,"sku":"SQ8898770","price":252.84,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/SilverFloor-1500-1024x1024-1.webp?v=1782756326"},{"product_id":"trade-select-wall-wrap-breather","title":"Trade Select Wall Wrap Breather","description":"\u003cp\u003eTrade Select Wall Wrap Breather from Ametalin, stocked in Heavy Duty and Medium Duty, each in 1350 mm and 1500 mm widths in 30 m and 60 m rolls. Coverage runs from 40.5 m² to 90 m² per roll.\u003c\/p\u003e\n\u003ch3\u003eChoose the duty from the site, not the wall\u003c\/h3\u003e\n\u003cp\u003eBoth grades do the same job once the cladding is on. The difference shows up before that, while the frame stands wrapped and exposed. Heavy Duty is the one for a windy site, a long build program, or a frame that other trades will be working past. Medium Duty is enough where the cladding follows quickly.\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, or the wrap is not a weather barrier.\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 Ametalin data sheet.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"Light Duty \/ 1350 mm x 30 m (40.5 m²)","offer_id":45225010135222,"sku":"SQ0172366","price":52.44,"currency_code":"AUD","in_stock":true},{"title":"Light Duty \/ 1350 mm x 60 m (81 m²)","offer_id":45225010167990,"sku":"SQ1761276","price":95.85,"currency_code":"AUD","in_stock":true},{"title":"Light Duty \/ 1500 mm x 30 m (45 m²)","offer_id":45225010200758,"sku":"SQ8075565","price":57.57,"currency_code":"AUD","in_stock":true},{"title":"Light Duty \/ 1500 mm x 60 m (90 m²)","offer_id":45225010233526,"sku":"SQ0983189","price":105.83,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1350 mm x 30 m (40.5 m²)","offer_id":45225010004150,"sku":"SQ4338165","price":60.32,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1350 mm x 60 m (81 m²)","offer_id":45225010036918,"sku":"SQ7365734","price":112.9,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1500 mm x 30 m (45 m²)","offer_id":45225010069686,"sku":"SQ8200615","price":62.98,"currency_code":"AUD","in_stock":true},{"title":"Medium Duty \/ 1500 mm x 60 m (90 m²)","offer_id":45225010102454,"sku":"SQ8369230","price":119.27,"currency_code":"AUD","in_stock":true},{"title":"Heavy Duty \/ 1350 mm x 30 m (40.5 m²)","offer_id":45225009873078,"sku":"SQ7558566","price":69.44,"currency_code":"AUD","in_stock":true},{"title":"Heavy Duty \/ 1350 mm x 60 m (81 m²)","offer_id":45225009905846,"sku":"SQ2813846","price":131.0,"currency_code":"AUD","in_stock":true},{"title":"Heavy Duty \/ 1500 mm x 30 m (45 m²)","offer_id":45225009938614,"sku":"SQ4665778","price":74.05,"currency_code":"AUD","in_stock":true},{"title":"Heavy Duty \/ 1500 mm x 60 m (90 m²)","offer_id":45225009971382,"sku":"SQ7032971","price":141.07,"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":"trade-select-firesark","title":"Trade Select FireSark®","description":"\u003cp\u003eTrade Select FireSark is a non-combustible roof sarking and wall wrap built for bushfire areas. E-glass fabric bonded to a 97% reflective aluminium foil with a fire resistant adhesive, 1350 mm x 30 m covering 40.5 m².\u003c\/p\u003e\n\u003ch3\u003eNon-combustible, not just fire retardant\u003c\/h3\u003e\n\u003cp\u003eBoth the fibreglass fabric and the aluminium foil are not deemed combustible, flammability index is 1, and ignitability, spread of flame and heat evolved indices are all 0 with smoke developed at 2. It complies with AS 3959-2018 for all Bushfire Attack Levels including Flame Zone, and meets the Deemed-to-Satisfy provisions for non-combustible construction. On a BAL rated job that combination is the reason to specify it.\u003c\/p\u003e\n\u003ch3\u003eVery strong for a membrane\u003c\/h3\u003e\n\u003cp\u003eTensile strength is 58 kN\/m in the machine direction against a 13.0 minimum, and 26 kN\/m lateral against a 10.5 minimum. Extra Heavy duty to AS\/NZS 4200.1:2017. That is a large margin, and it matters on a site where the sarking may sit exposed before cladding.\u003c\/p\u003e\n\u003ch3\u003eBarrier and reflective performance\u003c\/h3\u003e\n\u003cp\u003eClass 2 vapour barrier at 0.003 µg\/N·s, water barrier and air barrier. The foil face is 97% reflective with an emittance of 0.03, so it needs an air gap in front of it to contribute. It is electrically conductive, so keep it clear of wiring.\u003c\/p\u003e\n\u003cp\u003eFull figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"Default Title","offer_id":45225010266294,"sku":"SQ4207071","price":210.56,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/FireSark-Product-Shot-1024x1024-Trade-Select.webp?v=1782756327"},{"product_id":"trade-select-ceasefire","title":"Trade Select CeaseFire®","description":"\u003cp\u003eTrade Select CeaseFire is a vapour permeable wall wrap and sarking built from a single layer of non-combustible E-glass fabric infused with a hydrophobic treatment. 1500 mm x 30 m covering 45 m² at 0.17 mm.\u003c\/p\u003e\n\u003ch3\u003eThe rare combination\u003c\/h3\u003e\n\u003cp\u003eMost membranes make you choose between fire performance and breathability. CeaseFire is NCC Group 1, its E-glass component is not deemed combustible to AS 1530.1, flammability index is 1, and it is still Class 4 vapour permeable at 1.5767 µg\/N·s. That means a wall on a fire rated job can still dry outward instead of being sealed up.\u003c\/p\u003e\n\u003ch3\u003eDuty and strength\u003c\/h3\u003e\n\u003cp\u003eExtra Heavy duty to AS\/NZS 4200.1:2017. Tensile strength 24 kN\/m machine direction against a 13.0 minimum, edge tear 326 N against a 90 minimum, and 0.0% shrinkage.\u003c\/p\u003e\n\u003ch3\u003eNon-reflective\u003c\/h3\u003e\n\u003cp\u003eEmittance 0.90 on both faces, category NN, and non-conductive. It does not need an air gap to perform and it does not carry the electrical risk a foil wrap does.\u003c\/p\u003e\n\u003ch3\u003eAgainst FireSark\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/products\/trade-select-firesark\"\u003eFireSark\u003c\/a\u003e is the reflective, vapour barrier answer for bushfire areas. CeaseFire is the breathable, non-reflective one. Which is right depends on whether the wall needs to dry outward or needs a vapour barrier.\u003c\/p\u003e\n\u003cp\u003eFull figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"Default Title","offer_id":45225010331830,"sku":"SQ8576331","price":681.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Trade-Select-CeaseFire-02.webp?v=1782756328"},{"product_id":"trade-select-thermalliner","title":"Trade Select ThermalLiner","description":"\u003cp\u003eTrade Select ThermalLiner is a foil faced XPE foam roll for roofs and walls, 1500 mm by 20 m covering 30 m², over a 4 mm closed cell foam core with aluminium foil laminated to a polymer weave on both faces.\u003c\/p\u003e\n\u003ch3\u003eWhere the R-value comes from\u003c\/h3\u003e\n\u003cp\u003eThe material R-value is 0.11 m²K\/W, stated as RM 0.1. That number on its own is not what makes a reflective product work. The performance comes from the foil facing an air cavity, so the bright face has to go into the cavity and the cavity has to stay clear. Dust settling on an upward facing foil surface cuts the reflective performance over time, which is why the orientation and the detailing matter more here than the thickness. \u003ca href=\"\/blogs\/blog\/blanket-vs-sarking-vs-batts\"\u003eBlanket, sarking or batts\u003c\/a\u003e sets out where a reflective product belongs against bulk insulation, and why one rarely replaces the other.\u003c\/p\u003e\n\u003ch3\u003eThe quiet benefit on a shed\u003c\/h3\u003e\n\u003cp\u003eThe foam core also dampens drumming on a metal roof. On a shed or garage that is often the difference people notice first, ahead of the temperature. \u003ca href=\"\/blogs\/blog\/insulating-a-metal-shed-roof\"\u003eWhy metal sheds and garages get so hot\u003c\/a\u003e goes through the options.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eRun it with the bright foil face into the air cavity. Keep the cavity clear. The foil conducts electricity, so keep it clear of wiring during installation.\u003c\/p\u003e\n\u003cp\u003eFull thermal, strength and classification figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"Default Title","offer_id":45225010397366,"sku":"SQ2745855","price":271.84,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/TradeSelect-ThermalLiner-4-1024x1024-2.webp?v=1782756329"},{"product_id":"thermalbreak-7","title":"Trade Select ThermalBreak 7","description":"\u003cp\u003eThermalBreak 7 is a foil faced XPE foam sarking made for one specific job: the thermal break the NCC asks for where cladding fixes straight onto steel framing. Material R-value is 0.21 m²K\/W, and 0.20 once it is compressed.\u003c\/p\u003e\n\u003ch3\u003eWhy the compressed figure is the one that counts\u003c\/h3\u003e\n\u003cp\u003eA thermal break gets squashed the moment the cladding screws go through it. A product that only holds its rating uncompressed is not doing the job on site. This one still holds R0.20 compressed, which is exactly what the code asks for at those junctions. \u003ca href=\"\/blogs\/blog\/thermal-break-r02-explained\"\u003eThermal breaks explained\u003c\/a\u003e covers where the requirement applies and why such a small number matters at all.\u003c\/p\u003e\n\u003ch3\u003eWhat it does beyond the thermal break\u003c\/h3\u003e\n\u003cp\u003eIt is also a Class 2 vapour barrier, a water barrier to AS\/NZS 4201.4 and an air barrier, classified Extra Heavy duty to AS\/NZS 4200.1:2017. Fire is Group 1 to AS 5637.1 with a Low flammability classification, and it is suitable for all Bushfire Attack Levels. Get independent advice before locking a sarking into a BAL design.\u003c\/p\u003e\n\u003ch3\u003eSystem values\u003c\/h3\u003e\n\u003cp\u003eAn independent engineer calculated total system R-values to AS\/NZS 4859.2:2018 for typical mainland capital city conditions under NCC 2019: RT 0.92 in winter and 2.02 in summer for a warehouse roof with no ceiling, and RT 2.07 winter and 2.03 summer in a double brick wall. Those figures were calculated against NCC 2019 and may not carry across to other editions of the code, so check before relying on them for a current submission.\u003c\/p\u003e\n\u003ch3\u003eRoll and fitting\u003c\/h3\u003e\n\u003cp\u003eOne roll size: 1350 mm by 22.25 m plus a 150 mm flap, covering 30 m², over a 7.8 mm foam core. Fix it over the steel frame before the cladding goes on so it sits between frame and sheet and breaks the conduction path, and lap the runs onto the flap rather than butting them. Do not stretch it drum tight over the studs, because the compressed R0.20 figure assumes there is still foam there to compress. The foil conducts electricity, so keep it clear of wiring.\u003c\/p\u003e\n\u003cp\u003eFull figures are in the table below.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"Default Title","offer_id":45225010462902,"sku":"SQ2821695","price":335.88,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Trade-Select-ThermalBreak-7-1024x1024-2-1.webp?v=1782756329"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/collections\/ametalin-building-membrane.webp?v=1786446291","url":"https:\/\/awbm.com.au\/collections\/ametalin-building-membrane.oembed","provider":"AWBM","version":"1.0","type":"link"}