{"product_id":"tri-built-tb-316825-tri-built-2-in-x-4-ft-x-8-ft-iso-rigid-roof-insulation-board","title":"TRI-BUILT 2 in. x 4 ft. x 8 ft. ISO Rigid Roof Insulation Board","description":"\u003ch1\u003eTRI-BUILT 2 in. x 4 ft. x 8 ft. ISO Rigid Roof Insulation Board\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis is a single TRI-BUILT 2.0 in. thick, 4 ft. x 8 ft. polyiso (ISO) rigid roof insulation board, sold per piece and weighing about 12.16 lb. The thicker board delivers more thermal resistance per layer in low-slope roofing assemblies. Count boards from your roof area and the R-value target of your roof system design.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolyiso core:\u003c\/strong\u003e Rigid polyisocyanurate insulation board, listed as Polyiso.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 in. thickness:\u003c\/strong\u003e 2.0 in. board thickness for greater thermal resistance per layer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 x 8 board:\u003c\/strong\u003e Standard 4 ft. x 8 ft. board size for flat-roof coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManageable weight:\u003c\/strong\u003e About 12.16 lb per 2 in. board for roof-top handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-slope use:\u003c\/strong\u003e Rigid insulation for low-slope roofing assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eSpecifications Table:\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTRI-BUILT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTB-316825\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSell unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 board, 4 ft. x 8 ft. x 2.0 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISO Rigid Roof Insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolyisocyanurate (polyiso)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.0 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 ft. x 8 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48 in. x 96 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage per unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 sq ft per board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12.16 lb per board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQXO category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolyiso\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRigid insulation for low-slope roofing assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch2\u003eCoverage \u0026amp; How Much You Need:\u003c\/h2\u003e\u003cp\u003eOne 4 ft. x 8 ft. board covers 32 sq ft. Divide total roof area by 32 sq ft per board and plan staggered joints between layers; the 2 in. thickness reduces board count versus 1 in. for the same R-value.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eFor low-slope roof assemblies under approved membrane systems per the roofing manufacturer's requirements. Boards sold individually; adhesives, fasteners\/plates, cover boards and membranes are sold separately. R-value per inch is not stated in the sources.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What size is each board?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each board is 4 ft. x 8 ft. (48 in. x 96 in.) and 2.0 in. thick.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much does one board cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One board covers 32 sq ft of roof area, before waste and joint allowance.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it sold?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Sold per piece, one board per order unit.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What material is it?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Polyisocyanurate (polyiso) rigid foam, listed under the Polyiso category.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Why choose 2 in. over 1 in.?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 2 in. board gives more R-value per layer, reducing board count and joint lines in thicker assemblies.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much does it weigh?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e About 12.16 lb per 2 in. board.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eUse 2 in. boards when a single thicker layer meets the R-value target, or as the upper layer over 1 in. boards with joints staggered. Confirm membrane adhesive compatibility with polyiso facers and verify fastener\/plate lengths for the doubled assembly thickness.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHandle boards carefully on windy roofs and install per the roofing system manufacturer's instructions and local building code.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder TRI-BUILT 2 in. 4x8 polyiso rigid roof insulation boards for higher R-value in fewer layers.\u003c\/strong\u003e\u003c\/p\u003e","brand":"TRI-BUILT","offers":[{"title":"Default Title","offer_id":53529505562991,"sku":"TB-316825","price":45.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/804347_default_hero.jpg?v=1790350493","url":"https:\/\/superarbor.io\/products\/tri-built-tb-316825-tri-built-2-in-x-4-ft-x-8-ft-iso-rigid-roof-insulation-board","provider":"Super Arbor","version":"1.0","type":"link"}