{"title":"Ceiling Insulation","description":"\u003cp\u003eExplore AWBM's range of ceiling insulation batts, designed to keep Australian homes warmer in winter and cooler in summer. Compare R-values across trusted brands and order online for delivery across Australia.\u003c\/p\u003e","products":[{"product_id":"r31-pink-soundbreak-batts","title":"R3.1 Pink Soundbreak Batts","description":"\u003cp\u003eR3.1 Pink Soundbreak Batts are high density glasswool at 110 mm, dyed green for identification once installed. They are an acoustic batt first, sized for a deeper cavity than the 90 mm version, with a solid thermal figure alongside.\u003c\/p\u003e\n\u003ch3\u003eWhat it is actually for\u003c\/h3\u003e\n\u003cp\u003eIt sits inside the stud or joist cavity and cuts sound transfer between rooms. Theatre rooms, bathrooms, laundries, kitchens, bedrooms and midfloors are the usual jobs. This is about noise from the next room, not noise from outside the building.\u003c\/p\u003e\n\u003ch3\u003eThe number that matters is not on the batt\u003c\/h3\u003e\n\u003cp\u003eRw and Rw+Ctr belong to the whole wall or floor system, not to the batt on its own. Framing, lining, fixings and gaps all move it. Send us your build-up and we will send back the system report that matches it.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eSix batts per pack at 1160 mm long: 430 mm wide covering 2.99 m² and 580 mm wide covering 4.04 m². It needs a cavity at least 110 mm deep to sit at full thickness. If your frame is 90 mm, use \u003ca href=\"\/products\/r27-pink-soundbreak-batts\"\u003eR2.7 Soundbreak\u003c\/a\u003e instead rather than compressing this one.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eCut with a sharp knife on a firm surface and friction fit. The batt must touch the frame on all four sides with no gaps at the top, bottom or edges, since a gap is where sound gets through.\u003c\/p\u003e\n\u003cp\u003eNon-combustible to AS 1530.1, rated BAL Low through to Flame Zone. Full figures are in the table below.\u003c\/p\u003e","brand":"Fletcher Insulation","offers":[{"title":"R3.1 1160x430x110mm (3m2\/pk)","offer_id":45225008988342,"sku":"SQ7180828","price":52.72,"currency_code":"AUD","in_stock":true},{"title":"R3.1 1160x580x110mm (4m2\/pk)","offer_id":45225009021110,"sku":"SQ0202443","price":70.87,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Pink-Soundbreak-Sound-blank-label.jpg?v=1782756320"},{"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":"r35-pink-ceiling-batts","title":"R3.5 Pink Ceiling Batts","description":"\u003cp\u003eR3.5 Pink Ceiling Batts are 175 mm FBS-1 bio-soluble glasswool batts from Fletcher, Australian made using up to 80% recycled content. R3.5 is one of the most commonly specified ceiling values in Australian housing.\u003c\/p\u003e\n\u003ch3\u003eFire and bushfire\u003c\/h3\u003e\n\u003cp\u003eNon-combustible to AS\/NZS 1530.1, with ignitability, spread of flame and heat evolved indices all at 0 and smoke developed at 0 to 1. Rated for bushfire areas from BAL Low through to Flame Zone under AS 3959, and it meets NCC 2022 clause C2D10(1) for non-combustibility. If the site has a BAL rating, this is a batt that does not restrict you.\u003c\/p\u003e\n\u003ch3\u003eIt is also an acoustic batt\u003c\/h3\u003e\n\u003cp\u003eNRC is 1.10 with an airflow resistance of 2700 Rayls\/m, which is genuine absorption rather than a token figure. In a ceiling that means less noise carrying between the roof space and the rooms below, and less reverberation in large open rooms.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eTwo widths at 1160 mm long. The 430 mm comes 16 to a pack covering 7.98 m², the 580 mm comes 10 to a pack covering 6.73 m². Note the wider batt covers less per pack, not more, so estimate on the square metre figure.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eCuts with a knife and friction fits between the joists, so it holds without fixings. Let the batts recover to full loft before installing and do not compress them into the space. Keep them dry, and keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eFull thermal, fire, acoustic and compliance figures are in the table below.\u003c\/p\u003e","brand":"Fletcher Insulation","offers":[{"title":"R3.5 1160x430x175mm (8m2\/pk)","offer_id":45225010856118,"sku":"SQ2130187","price":54.81,"currency_code":"AUD","in_stock":true},{"title":"R3.5 1160x580x175mm (6.7m2\/pk)","offer_id":45225010888886,"sku":"SQ5479091","price":46.07,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Pink-Batts-Ceiling-blank-label.webp?v=1782756332"},{"product_id":"r41-pink-ceiling-batts","title":"R4.1 Pink Ceiling Batts","description":"\u003cp\u003eR4.1 Pink Ceiling Batts are FBS-1 bio-soluble glasswool from Fletcher, Australian made using up to 80% recycled content. R4.1 is a step above the common residential ceiling spec, for colder zones or for a build chasing a higher energy rating.\u003c\/p\u003e\n\u003ch3\u003eFire and bushfire\u003c\/h3\u003e\n\u003cp\u003eNon-combustible to AS\/NZS 1530.1 and rated for bushfire areas from BAL Low through to Flame Zone under AS 3959. It meets NCC 2022 clause C2D10(1) for non-combustibility, so a BAL rating on the site does not rule it out.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eTen batts per pack in both widths at 1160 mm long. The 430 mm covers 4.99 m² per pack and the 580 mm covers 6.73 m². Australian ceiling joists are normally at 450 mm or 600 mm centres and the two widths follow that, but measure your set-out before ordering.\u003c\/p\u003e\n\u003ch3\u003eCheck the depth\u003c\/h3\u003e\n\u003cp\u003eAt this R-value the batt is deep enough that the roof space becomes the constraint, particularly near the eaves. Confirm the clear depth across the whole ceiling, not just at the ridge, because a batt crushed at the perimeter is not delivering its rated figure there.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eCuts with a knife and friction fits between the joists. Let the batts recover to full loft first, do not compress them, keep them dry, and keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eExact batt dimensions, pack quantities, fire indices and compliance detail are in the table below.\u003c\/p\u003e","brand":"Fletcher Insulation","offers":[{"title":"R4.1 1160x430x195 (5m2\/pk)","offer_id":45225010954422,"sku":"SQ5358362","price":39.42,"currency_code":"AUD","in_stock":true},{"title":"R4.1 1160x580x195mm (6.7m2\/pk)","offer_id":45225010987190,"sku":"SQ4785822","price":53.01,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Pink-Batts-Ceiling-blank-label_7891c1bb-1cb7-405c-91e8-b3a6a9a41e8c.webp?v=1782756332"},{"product_id":"r50-pink-ceiling-batts","title":"R5.0 Pink Ceiling Batts","description":"\u003cp\u003eR5.0 Pink Ceiling Batts are 220 mm FBS-1 bio-soluble glasswool from Fletcher, Australian made using up to 80% recycled content. This is a high performance ceiling spec, normally driven by a cold climate zone or an energy rating target rather than by the minimum code requirement.\u003c\/p\u003e\n\u003ch3\u003eDepth is the constraint\u003c\/h3\u003e\n\u003cp\u003e220 mm of batt needs 220 mm of clear space to sit at its rated thickness. Roof spaces are usually generous at the ridge and tight at the eaves, and a batt crushed at the perimeter performs like a thinner one exactly where the ceiling is most exposed. Measure the tight spots before ordering.\u003c\/p\u003e\n\u003ch3\u003eFire and bushfire\u003c\/h3\u003e\n\u003cp\u003eNon-combustible to AS\/NZS 1530.1, rated BAL Low through to Flame Zone under AS 3959, and it meets NCC 2022 clause C2D10(1) for non-combustibility.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eEight batts per pack at 1160 mm long. The 430 mm width covers 3.99 m² and the 580 mm covers 5.38 m². Coverage per pack keeps falling as the R-value climbs, so allow for more packs than an R3.5 job over the same ceiling.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eCuts with a knife and friction fits between the joists. Let the batts recover to full loft, do not compress them, keep them dry, and keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eFull figures are in the table below.\u003c\/p\u003e","brand":"Fletcher Insulation","offers":[{"title":"R5.0 430 (4m2\/pk)","offer_id":45225011019958,"sku":"SQ1704246","price":53.29,"currency_code":"AUD","in_stock":true},{"title":"R5.0 580 (5.4m2\/pk)","offer_id":45225011052726,"sku":"SQ7577571","price":71.82,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Pink-Batts-Ceiling-blank-label_19d94b46-da6b-47ce-bc2f-5c13b265cf3d.webp?v=1782756333"},{"product_id":"r60-pink-ceiling-batts","title":"R6.0 Pink Ceiling Batts","description":"\u003cp\u003eR6.0 Pink Ceiling Batts are the highest R-value ceiling batt in the Fletcher Pink range, FBS-1 bio-soluble glasswool, Australian made using up to 80% recycled content.\u003c\/p\u003e\n\u003ch3\u003eThis is a depth-limited product\u003c\/h3\u003e\n\u003cp\u003eAt R6.0 the question is almost never whether the batt performs, it is whether the roof space can actually take it at full thickness across the whole ceiling. Check the clear depth at the eaves, around ductwork and under any bracing before ordering. A high R batt crushed into a shallow space gives you the cost of R6.0 and the performance of something well below it.\u003c\/p\u003e\n\u003ch3\u003eFire and bushfire\u003c\/h3\u003e\n\u003cp\u003eNon-combustible to AS\/NZS 1530.1, rated BAL Low through to Flame Zone under AS 3959, and it meets NCC 2022 clause C2D10(1) for non-combustibility.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eSix batts per pack at 1160 mm long. The 430 mm width covers 2.99 m² and the 580 mm covers 4.04 m², the lowest coverage per pack in the Pink ceiling range, so the pack count on a full ceiling adds up quickly.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eCuts with a knife and friction fits between the joists. Let the batts recover to full loft before installing, do not compress them, keep them dry, and keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eExact batt dimensions, pack quantities and the full fire and compliance figures are in the table below.\u003c\/p\u003e","brand":"Fletcher Insulation","offers":[{"title":"R6.0 1160x430x240mm (3m2\/pk)","offer_id":45225011118262,"sku":"SQ4523861","price":47.4,"currency_code":"AUD","in_stock":true},{"title":"R6.0 1160x580x240 (4m2\/pk)","offer_id":45225011151030,"sku":"SQ3251204","price":63.55,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Pink-Batts-Ceiling-blank-label_c8089311-803c-4088-b870-7a157f1181fc.webp?v=1782756333"},{"product_id":"bradford-perimeter-spacer","title":"Bradford Perimeter Spacer","description":"\u003cp\u003eBradford perimeter spacer is a ribbed edge vent that maintains a 20 mm airflow gap at the perimeter of a ceiling, 430 x 660 mm, 50 per pack. Made from 30% recycled material.\u003c\/p\u003e\n\u003ch3\u003eIt exists because of a specific code requirement\u003c\/h3\u003e\n\u003cp\u003eIt is a Deemed-to-Satisfy solution under NCC 2022 Section 10.8.3. The requirement is about keeping air moving at the roof edge so moisture does not accumulate where the ceiling insulation meets the eaves, which is one of the tightest and most condensation-prone parts of a roof.\u003c\/p\u003e\n\u003ch3\u003eWhat it does in practice\u003c\/h3\u003e\n\u003cp\u003eCeiling insulation pushed hard into the eaves blocks the airflow path completely. The spacer holds a consistent 20 mm gap so air can still move, without relying on the installer eyeballing a clearance batt by batt across the whole perimeter.\u003c\/p\u003e\n\u003cp\u003eLightweight and straightforward to fit in new builds or retrofits. The CSR product code is in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"430 x 660 mm (50 per pack)","offer_id":45351440482486,"sku":"490472","price":1083.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/bradford-perimeter-spacer_901c7ce1-37d6-498f-b802-8660986d015d-opt.jpg?v=1786565736"},{"product_id":"r6-0-hp-bradford-gold-ceiling-batts-260mm","title":"R6.0 HP Bradford Gold Ceiling Batts 260mm","description":"\u003cp\u003eR6.0 HP Bradford Gold is a high density non-combustible glasswool ceiling batt at 260 mm. It is a serious ceiling spec, normally seen where the energy rating has to be lifted well past the ordinary residential target.\u003c\/p\u003e\n\u003ch3\u003eBefore you order, measure the depth\u003c\/h3\u003e\n\u003cp\u003e260 mm of batt needs 260 mm of clear space to sit at its rated thickness. In a lot of roof spaces the ceiling is fine in the middle and pinches at the eaves, and a batt crushed at the perimeter is not delivering R6.0 there. If the depth is not available, a lower R-value installed properly beats a high one squashed in.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eSix batts per pack at 1160 mm long. The 430 mm width covers 2.99 m² per pack, the 580 mm covers 4.04 m². At this R-value the pack covers roughly a third of what an R2.5 pack does, so check the pack count against the ceiling area early. \u003ca href=\"\/blogs\/blog\/how-much-insulation-do-i-need\"\u003eCoverage per pack explained\u003c\/a\u003e has a worked example.\u003c\/p\u003e\n\u003ch3\u003eWhere it sits in the range\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/products\/r5-0-hp-bradford-gold-ceiling-batts-240mm\"\u003eR5.0 HP\u003c\/a\u003e is one step down at 240 mm, \u003ca href=\"\/products\/r7-0-hp-bradford-gold-ceiling-batts-290mm\"\u003eR7.0 HP\u003c\/a\u003e one step up at 290 mm. Which one the job needs comes from the climate zone and the rest of the build-up, not from the number alone. See \u003ca href=\"\/blogs\/blog\/r-value-australian-climate-zones\"\u003eR-value by Australian climate zone\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eFriction fit between the joists, butt the ends, no gaps, no compression, and keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eThermal rating declared to AS\/NZS 4859.1 by the manufacturer. Sizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (6 per pack, 2.99 m²)","offer_id":45351820361910,"sku":"467949","price":51.3,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (6 per pack, 4.04 m²)","offer_id":45351820394678,"sku":"467960","price":67.45,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r6-0-bradford-gold-ceiling-batts.jpg?v=1786540075"},{"product_id":"r7-0-hp-bradford-gold-ceiling-batts-290mm","title":"R7.0 HP Bradford Gold Ceiling Batts 290mm","description":"\u003cp\u003eR7.0 HP Bradford Gold is the highest R-value ceiling batt in the Bradford Gold range, a high density non-combustible glasswool batt at 290 mm.\u003c\/p\u003e\n\u003ch3\u003eThis one is depth limited, not price limited\u003c\/h3\u003e\n\u003cp\u003eAt 290 mm the constraint is almost always the roof space, not the budget. Before ordering, check the clear depth above the ceiling across the whole area including the eaves, not just at the ridge. A 290 mm batt crushed to 200 mm at the perimeter performs like a 200 mm batt there, and the difference between what the paperwork says and what the ceiling does starts exactly at that point.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eFour batts per pack at 1160 mm long. The 430 mm width covers 2 m² per pack and the 580 mm covers 2.69 m². That is the lowest coverage per pack in the range, so the pack count on a whole ceiling adds up quickly. \u003ca href=\"\/blogs\/blog\/how-much-insulation-do-i-need\"\u003eCoverage per pack explained\u003c\/a\u003e covers the estimating.\u003c\/p\u003e\n\u003ch3\u003eIs R7.0 the right call\u003c\/h3\u003e\n\u003cp\u003eSometimes a lower R-value with the gaps properly closed and the eaves detailed well beats a higher one fitted into a space that cannot take it. \u003ca href=\"\/blogs\/blog\/r-value-australian-climate-zones\"\u003eR-value by Australian climate zone\u003c\/a\u003e covers how the requirement is set, and \u003ca href=\"\/products\/r6-0-hp-bradford-gold-ceiling-batts-260mm\"\u003eR6.0 HP\u003c\/a\u003e at 260 mm is the step below if depth is marginal.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eFriction fit between the joists, butt the ends, no gaps, no compression, and keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eThermal rating declared to AS\/NZS 4859.1 by the manufacturer. Sizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (4 per pack, 2 m²)","offer_id":45351820427446,"sku":"467961","price":47.5,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (4 per pack, 2.69 m²)","offer_id":45351820460214,"sku":"467962","price":63.65,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r7-0-bradford-gold-ceiling-batts.jpg?v=1786540075"},{"product_id":"r3-5-bradford-gold-ceiling-batts-185mm","title":"R3.5 Bradford Gold Ceiling Batts 185mm","description":"\u003cp\u003eR3.5 Bradford Gold is a non-combustible glasswool ceiling batt at 185 mm thick, and it is one of the most commonly specified ceiling values in Australian housing.\u003c\/p\u003e\n\u003ch3\u003eWatch the pack sizes on this one\u003c\/h3\u003e\n\u003cp\u003eThe two widths do not carry the same pack count. The 430 mm batt comes 16 to a pack covering 7.98 m², while the 580 mm comes 10 to a pack covering 6.73 m². That means the wider batt covers less per pack, not more, so work off the square metre figure rather than counting packs by habit. \u003ca href=\"\/blogs\/blog\/how-much-insulation-do-i-need\"\u003eCoverage per pack explained\u003c\/a\u003e has a worked example.\u003c\/p\u003e\n\u003ch3\u003eWhich width\u003c\/h3\u003e\n\u003cp\u003e430 mm suits framing at 450 mm centres and 580 mm suits 600 mm centres, which is the usual Australian set-out. Measure yours before ordering.\u003c\/p\u003e\n\u003ch3\u003eIf you need more\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/products\/r4-1-bradford-gold-ceiling-batts-215mm\"\u003eR4.1 at 215 mm\u003c\/a\u003e is the next step in standard Gold, and the HP range goes further again in \u003ca href=\"\/products\/r5-0-hp-bradford-gold-ceiling-batts-240mm\"\u003eR5.0\u003c\/a\u003e, R6.0 and R7.0 for tighter build-ups. What you actually need comes from the climate zone and the rest of the system, covered in \u003ca href=\"\/blogs\/blog\/r-value-australian-climate-zones\"\u003eR-value by Australian climate zone\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eFriction fit between the joists, butt the ends, no gaps, and do not compress the batt to make it fit. Keep the clearances required around downlights and flues.\u003c\/p\u003e\n\u003cp\u003eThermal rating declared to AS\/NZS 4859.1 by the manufacturer. In Victoria this work may attract a discount under the \u003ca href=\"\/blogs\/blog\/victorian-energy-upgrades-ceiling-insulation\"\u003eVictorian Energy Upgrades program\u003c\/a\u003e. Sizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (16 per pack, 7.98 m²)","offer_id":45351820689590,"sku":"15241","price":61.75,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (10 per pack, 6.73 m²)","offer_id":45351820722358,"sku":"41895","price":51.3,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r3-5-bradford-gold-ceiling-batts.jpg?v=1786540207"},{"product_id":"r5-0-hp-bradford-gold-ceiling-batts-240mm","title":"R5.0 HP Bradford Gold Ceiling Batts 240mm","description":"\u003cp\u003eR5.0 HP Bradford Gold is a high density non-combustible glasswool ceiling batt at 240 mm. HP means the glasswool is packed denser, which is how it reaches R5.0 without the batt getting any deeper than it has to.\u003c\/p\u003e\n\u003ch3\u003eWhat HP is for\u003c\/h3\u003e\n\u003cp\u003eTwo situations. Either the build-up is tight and you need more R-value out of the depth available, or the climate zone is demanding enough that the standard range runs out. If neither applies, \u003ca href=\"\/products\/r4-1-bradford-gold-ceiling-batts-215mm\"\u003eR4.1 standard Gold\u003c\/a\u003e at 215 mm covers the same ceiling for less. \u003ca href=\"\/blogs\/blog\/r-value-australian-climate-zones\"\u003eR-value by Australian climate zone\u003c\/a\u003e covers how the requirement is set in the first place.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eEight batts per pack, 1160 mm long. The 430 mm width covers 3.99 m² and the 580 mm covers 5.38 m². Coverage per pack keeps falling as the R-value climbs, so budget for more packs than a standard R3.5 job would need over the same ceiling.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eCheck the depth before you order. At 240 mm the batt needs genuine clearance, especially near the eaves. Friction fit between the joists, butt the ends, no gaps, and do not compress it, because a compressed high density batt gives up the very thing you paid for. Keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eThermal rating declared to AS\/NZS 4859.1 by the manufacturer. Next steps up are \u003ca href=\"\/products\/r6-0-hp-bradford-gold-ceiling-batts-260mm\"\u003eR6.0 HP\u003c\/a\u003e and \u003ca href=\"\/products\/r7-0-hp-bradford-gold-ceiling-batts-290mm\"\u003eR7.0 HP\u003c\/a\u003e. Sizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (8 per pack, 3.99 m²)","offer_id":45351820296374,"sku":"467911","price":52.25,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (8 per pack, 5.38 m²)","offer_id":45351820329142,"sku":"467912","price":70.3,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r5-0-bradford-gold-ceiling-batts.jpg?v=1786540206"},{"product_id":"r4-1-bradford-gold-ceiling-batts-215mm","title":"R4.1 Bradford Gold Ceiling Batts 215mm","description":"\u003cp\u003eR4.1 Bradford Gold is a non-combustible glasswool ceiling batt at 215 mm thick, the top of the standard Gold ceiling range before the higher density HP batts take over.\u003c\/p\u003e\n\u003ch3\u003eDepth is the thing to check first\u003c\/h3\u003e\n\u003cp\u003eAt 215 mm this batt needs real room above the ceiling. If the roof space pinches down at the eaves, or there is ductwork or a flue running through, check the actual clearance before ordering rather than after. A batt squashed to fit is not delivering R4.1, and at this thickness there is more to lose.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eTen batts per pack in both widths at 1160 mm long: 430 mm covering 4.99 m² and 580 mm covering 6.73 m². Coverage per pack drops as the batts get thicker, so a high R spec means more packs for the same ceiling. \u003ca href=\"\/blogs\/blog\/how-much-insulation-do-i-need\"\u003eCoverage per pack explained\u003c\/a\u003e covers the arithmetic.\u003c\/p\u003e\n\u003ch3\u003eOr step across to HP\u003c\/h3\u003e\n\u003cp\u003eIf you want a higher R-value without more depth, the HP batts are higher density and lift the R-value for the same or tighter build-up. \u003ca href=\"\/products\/r5-0-hp-bradford-gold-ceiling-batts-240mm\"\u003eR5.0 HP\u003c\/a\u003e is the next one up. Whether you need it comes down to climate zone and the rest of the build-up, which \u003ca href=\"\/blogs\/blog\/r-value-australian-climate-zones\"\u003eR-value by Australian climate zone\u003c\/a\u003e works through.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eFriction fit between the joists, butt the ends, leave no gaps, and keep whatever clearance the downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eThermal rating declared to AS\/NZS 4859.1 by the manufacturer. Sizes and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (10 per pack, 4.99 m²)","offer_id":45351820230838,"sku":"111716","price":43.7,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (10 per pack, 6.73 m²)","offer_id":45351820263606,"sku":"111715","price":57.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r4-1-bradford-gold-ceiling-batts.jpg?v=1786540207"},{"product_id":"r2-5-bradford-gold-ceiling-batts-140mm","title":"R2.5 Bradford Gold Ceiling Batts 140mm","description":"\u003cp\u003eR2.5 Bradford Gold is a non-combustible glasswool ceiling batt, 140 mm thick. It is the entry point of the Gold ceiling range, and the one to reach for when the ceiling depth is tight or when R2.5 is genuinely all the job calls for.\u003c\/p\u003e\n\u003ch3\u003eWhich width\u003c\/h3\u003e\n\u003cp\u003eTwo options, both 1160 mm long and 16 batts to a pack: 430 mm wide covering 7.98 m², and 580 mm wide covering 10.77 m². Australian ceiling framing is normally set out at 450 mm or 600 mm centres, and the two batt widths follow that convention. Measure your actual joist spacing before ordering rather than assuming, because a batt that is too narrow leaves a gap at every joist.\u003c\/p\u003e\n\u003ch3\u003eIs R2.5 enough\u003c\/h3\u003e\n\u003cp\u003eThat depends on where the house is and what the rest of the build-up does. There is no single national ceiling R-value. \u003ca href=\"\/blogs\/blog\/r-value-australian-climate-zones\"\u003eR-value by Australian climate zone\u003c\/a\u003e covers how the target gets set and what else changes it. If you have the ceiling depth, stepping up to \u003ca href=\"\/products\/r3-0-bradford-gold-ceiling-batts-165mm\"\u003eR3.0 at 165 mm\u003c\/a\u003e or \u003ca href=\"\/products\/r3-5-bradford-gold-ceiling-batts-185mm\"\u003eR3.5 at 185 mm\u003c\/a\u003e is usually inexpensive performance for the same labour.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eFriction fit between the joists and butt the ends so there are no gaps, since a gap is worth more lost performance than most people expect. Do not compress the batt to make it fit a shallower space, because a bulk insulation batt only delivers its rated R-value at full thickness. Keep the clearances any downlights or flues in the ceiling require.\u003c\/p\u003e\n\u003cp\u003eThermal rating is declared to AS\/NZS 4859.1 by the manufacturer. Sizes, coverage and CSR product codes are in the table below. In Victoria, ceiling insulation may qualify for a discount under the \u003ca href=\"\/blogs\/blog\/victorian-energy-upgrades-ceiling-insulation\"\u003eVictorian Energy Upgrades program\u003c\/a\u003e.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (16 per pack, 7.98 m²)","offer_id":45351820558518,"sku":"111720","price":49.4,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (16 per pack, 10.77 m²)","offer_id":45351820591286,"sku":"111719","price":67.45,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r2-5-bradford-gold-ceiling-batts.jpg?v=1786540208"},{"product_id":"r3-0-bradford-polymax-ceiling-batts-180mm","title":"R3.0 Bradford Polymax Ceiling Batts 180mm","description":"\u003cp\u003eR3.0 Bradford Polymax is a 180 mm polyester ceiling batt. Same thermal job as a glasswool batt at the same R-value, without the itch.\u003c\/p\u003e\n\u003ch3\u003eWhy people choose polyester\u003c\/h3\u003e\n\u003cp\u003eIt is 100% thermally bonded polyester, non-irritant and low allergen, made from up to 50% recycled material with no manufacturing waste. That matters in three situations: the owner is installing it themselves, someone in the house reacts to glasswool, or the ceiling space gets accessed regularly for storage or services. If none of those apply, \u003ca href=\"\/products\/r3-0-bradford-gold-ceiling-batts-165mm\"\u003eBradford Gold\u003c\/a\u003e covers the same R-value in glasswool and is the one carrying a non-combustibility claim.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eEight batts per pack at 1160 mm long: 430 mm wide covering 3.99 m², 580 mm wide covering 5.38 m². Widths follow the usual 450 mm and 600 mm joist centres, so measure your set-out before ordering.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eLightweight and simple to cut. Friction fit between the joists, butt the ends, no gaps, and do not squash it to fit a shallower space. Keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eThermal rating declared to AS\/NZS 4859.1 by the manufacturer. Sizes, coverage and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (8 per pack, 3.99 m²)","offer_id":45351820034230,"sku":"126361","price":98.8,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (8 per pack, 5.38 m²)","offer_id":45351820066998,"sku":"126362","price":133.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r3-0-bradford-polymax-ceiling-batts.jpg?v=1786564868"},{"product_id":"r2-5-bradford-polymax-ceiling-batts-140mm","title":"R2.5 Bradford Polymax Ceiling Batts 140mm","description":"\u003cp\u003eR2.5 Bradford Polymax is a 140 mm ceiling batt made from 100% thermally bonded polyester rather than glasswool. No itch, low allergen, and nothing that needs gloves and long sleeves to handle.\u003c\/p\u003e\n\u003ch3\u003ePolymax or Gold\u003c\/h3\u003e\n\u003cp\u003eThey do the same thermal job at the same R-value. The difference is the material. Polymax is polyester, non-irritant, lightweight and made from up to 50% recycled content with no manufacturing waste, which is why it is the usual pick for owner-installers, for ceilings that will be accessed often, and for anyone sensitive to glasswool. \u003ca href=\"\/products\/r2-5-bradford-gold-ceiling-batts-140mm\"\u003eBradford Gold\u003c\/a\u003e is the glasswool equivalent and is the one quoted as non-combustible, so where the job specifically calls for a non-combustible material, use the glasswool.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eEight batts per pack, 1160 mm long. The 430 mm width covers 3.99 m² and the 580 mm covers 5.38 m². Ceiling joists are normally set out at 450 mm or 600 mm centres and the widths follow that, but measure yours before ordering.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eCuts cleanly and friction fits between the joists. Butt the ends and leave no gaps. Do not compress it into a shallower space, because bulk insulation only delivers its rated R-value at full thickness. Keep whatever clearance the downlights and flues in that ceiling require.\u003c\/p\u003e\n\u003cp\u003eThermal rating declared to AS\/NZS 4859.1 by the manufacturer. Sizes, coverage and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (8 per pack, 3.99 m²)","offer_id":45351819968694,"sku":"126350","price":82.65,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (8 per pack, 5.38 m²)","offer_id":45351820001462,"sku":"117709","price":112.1,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r2-5-bradford-polymax-ceiling-batts.jpg?v=1786564868"},{"product_id":"r4-0-bradford-polymax-ceiling-batts-200mm","title":"R4.0 Bradford Polymax Ceiling Batts 200mm","description":"\u003cp\u003eR4.0 Bradford Polymax is a 200 mm polyester ceiling batt, the top of the Polymax ceiling range. Non-irritant, low allergen, up to 50% recycled content.\u003c\/p\u003e\n\u003ch3\u003eCheck the depth first\u003c\/h3\u003e\n\u003cp\u003eAt 200 mm this batt needs real clearance above the ceiling, and roof spaces usually pinch at the eaves. A batt crushed at the perimeter is not delivering R4.0 there, so measure the tight spots before ordering rather than the middle of the roof space. If the depth is genuinely limited, a lower R-value fitted at full thickness beats a high one squashed in.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eSix batts per pack at 1160 mm long. The 430 mm width covers 2.99 m² and the 580 mm covers 4.04 m². Coverage per pack drops as the batts get thicker, so a high R spec means noticeably more packs for the same ceiling area.\u003c\/p\u003e\n\u003ch3\u003ePolyester or glasswool\u003c\/h3\u003e\n\u003cp\u003ePolymax is the non-irritant option and the easier one to handle over a whole ceiling. Where the job calls specifically for a non-combustible material, the glasswool Gold range is the one carrying that claim, and it runs higher than R4.0 in the HP batts.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eFriction fit between the joists, butt the ends, no gaps, no compression, and keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eThermal rating declared to AS\/NZS 4859.1 by the manufacturer. Sizes, coverage and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (6 per pack, 2.99 m²)","offer_id":45351820165302,"sku":"126876","price":99.75,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (6 per pack, 4.04 m²)","offer_id":45351820198070,"sku":"126877","price":133.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r4-0-bradford-polymax-ceiling-batts.jpg?v=1786564869"},{"product_id":"r3-5-bradford-polymax-ceiling-batts-180mm","title":"R3.5 Bradford Polymax Ceiling Batts 180mm","description":"\u003cp\u003eR3.5 Bradford Polymax is a polyester ceiling batt at one of the most commonly specified residential ceiling values. Non-irritant, low allergen, and made from up to 50% recycled material.\u003c\/p\u003e\n\u003ch3\u003eThe practical case for polyester\u003c\/h3\u003e\n\u003cp\u003eAt R3.5 you are usually insulating a whole house ceiling, which is a lot of batts to handle. Polyester does not itch, does not need the full covered-up kit to install, and is light to carry up through a manhole. That is the real reason it gets chosen over glasswool at this size of job, rather than any difference in thermal performance. Where the specification calls for a non-combustible material, use the glasswool \u003ca href=\"\/products\/r3-5-bradford-gold-ceiling-batts-185mm\"\u003eBradford Gold\u003c\/a\u003e instead.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eEight batts per pack at 1160 mm long. The 430 mm width covers 3.99 m² and the 580 mm covers 5.38 m². Work off the square metre figure rather than the pack count when you estimate. In Victoria, ceiling insulation work may attract a discount under the \u003ca href=\"\/blogs\/blog\/victorian-energy-upgrades-ceiling-insulation\"\u003eVictorian Energy Upgrades program\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eFriction fit between the joists, butt the ends, no gaps, no compression. Keep the clearances downlights and flues require.\u003c\/p\u003e\n\u003cp\u003eThermal rating declared to AS\/NZS 4859.1 by the manufacturer. Sizes, coverage and CSR product codes are in the table below.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (8 per pack, 3.99 m²)","offer_id":45351820099766,"sku":"126363","price":114.0,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (8 per pack, 5.38 m²)","offer_id":45351820132534,"sku":"126364","price":153.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r3-5-bradford-polymax-ceiling-batts.jpg?v=1786564869"},{"product_id":"r3-0-bradford-gold-ceiling-batts-165mm","title":"R3.0 Bradford Gold Ceiling Batts 165mm","description":"\u003cp\u003eR3.0 Bradford Gold is a non-combustible glasswool ceiling batt at 165 mm thick. It sits between R2.5 and R3.5 in the Gold range and is a common step up when the ceiling has the depth for it.\u003c\/p\u003e\n\u003ch3\u003eWhich width\u003c\/h3\u003e\n\u003cp\u003eBoth widths come 16 to a pack at 1160 mm long. The 430 mm batt covers 7.98 m² per pack and the 580 mm covers 10.77 m². Ceiling joists in Australia are usually set out at 450 mm or 600 mm centres and the widths follow that, but measure yours before ordering.\u003c\/p\u003e\n\u003ch3\u003eChoosing between R-values\u003c\/h3\u003e\n\u003cp\u003eThe jump from \u003ca href=\"\/products\/r2-5-bradford-gold-ceiling-batts-140mm\"\u003eR2.5\u003c\/a\u003e to R3.0 costs 25 mm of ceiling depth and very little extra labour, which is why it is often the better buy. Above this, \u003ca href=\"\/products\/r3-5-bradford-gold-ceiling-batts-185mm\"\u003eR3.5\u003c\/a\u003e and \u003ca href=\"\/products\/r4-1-bradford-gold-ceiling-batts-215mm\"\u003eR4.1\u003c\/a\u003e keep going in the same range. Whether you need any of them depends on climate zone and the rest of the build-up, which \u003ca href=\"\/blogs\/blog\/r-value-australian-climate-zones\"\u003eR-value by Australian climate zone\u003c\/a\u003e works through.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eFriction fit between the joists, butt the ends, and leave no gaps. Do not squash the batt into a shallower space, because bulk insulation only performs at its full rated thickness. Keep whatever clearance the downlights and flues in that ceiling require.\u003c\/p\u003e\n\u003cp\u003eNon-combustible glasswool, with the thermal rating declared to AS\/NZS 4859.1 by the manufacturer. Pack sizes, coverage and CSR product codes are in the table below. Working out how many packs? \u003ca href=\"\/blogs\/blog\/how-much-insulation-do-i-need\"\u003eCoverage per pack explained\u003c\/a\u003e.\u003c\/p\u003e","brand":"CSR Bradford","offers":[{"title":"1160 x 430 mm (16 per pack, 7.98 m²)","offer_id":45351820624054,"sku":"15226","price":58.9,"currency_code":"AUD","in_stock":true},{"title":"1160 x 580 mm (16 per pack, 10.77 m²)","offer_id":45351820656822,"sku":"15256","price":78.85,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/r3-0-bradford-gold-ceiling-batts.jpg?v=1786540456"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/collections\/ceiling-insulation.webp?v=1786538891","url":"https:\/\/awbm.com.au\/collections\/ceiling-insulation.oembed","provider":"AWBM","version":"1.0","type":"link"}