{"product_id":"elevate-polyisocyanurate-roof-insulation-board-1-0-to-4-0-in-thicknesses-4-ft-x-8-ft-or-4","title":"Elevate Polyisocyanurate Roof Insulation Board, 1.0 to 4.0 in. Thicknesses, 4 ft. x 8 ft. or 4 ft. x 4 ft.","description":"\u003ch1\u003eElevate Polyisocyanurate Roof Insulation Board, 1.0 to 4.0 in. Thicknesses, 4 ft. x 8 ft. or 4 ft. x 4 ft.\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eElevate polyiso roof insulation boards are rigid polyisocyanurate foam panels available in thicknesses from 1.0 to 4.0 inches and sheet sizes of 4 ft. x 8 ft. or 4 ft. x 4 ft. They insulate low-slope roof assemblies beneath the membrane or cover board. Each order is one sheet in the chosen thickness and size.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide thickness range:\u003c\/strong\u003e Offered in 1.0, 1.5, 2.0, 2.5, 2.6, 3.0 and 4.0 inch thicknesses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo sheet sizes:\u003c\/strong\u003e Available in 4 ft. x 8 ft. and 4 ft. x 4 ft. sheets depending on thickness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolyiso foam core:\u003c\/strong\u003e Rigid polyisocyanurate foam provides high thermal resistance per inch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-slope roofing:\u003c\/strong\u003e Used as flat rigid insulation in roof assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElevate system fit:\u003c\/strong\u003e Pairs with Elevate roofing membranes and Isogard HD cover board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePer-sheet ordering:\u003c\/strong\u003e Sold as individual sheets so you order only what the design calls for.\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\u003eElevate\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 sheet (thickness and size as selected)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElevate Polyiso Insulation Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot applicable (no color listed for this family)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThicknesses 1.0, 1.5, 2.0, 2.5, 2.6, 3.0 and 4.0 in.; sheets in 4 ft. x 8 ft. (1.0, 1.5, 2.0, 3.0, 4.0 in.) and 4 ft. x 4 ft. (2.5, 2.6, 4.0 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolyisocyanurate foam\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 flat roof insulation for low-slope roof assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVariants\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 items in this family\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\u003eA 4 ft. x 8 ft. sheet covers 32 square feet and a 4 ft. x 4 ft. sheet covers 16 square feet. Size the order by dividing the roof area by the sheet coverage, then add waste and account for board staggering and multiple layers.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eThese boards install as roof insulation within Elevate roof assemblies and pair with Elevate membranes and Isogard HD cover board, all sold separately. Sheet size availability varies by thickness.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is included in one order?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One rigid polyiso insulation sheet in the selected thickness and sheet size.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much does a sheet cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A 4 ft. x 8 ft. sheet covers 32 square feet; a 4 ft. x 4 ft. sheet covers 16 square feet.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What thicknesses are available?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e 1.0, 1.5, 2.0, 2.5, 2.6, 3.0 and 4.0 inches, with sheet size depending on the thickness.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is a cover board needed on top?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A high-density cover board such as Elevate Isogard HD is commonly installed over polyiso insulation under the membrane and is sold separately.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I mix thicknesses for R-value?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Thicknesses are chosen per design; verify the required R-value and any membrane or code requirements before selecting a single thickness or a layered build-up.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003ePolyiso remains the standard choice for low-slope roof insulation thanks to its high thermal resistance per inch, so pick thickness to match the target R-value and verify it against code and membrane attachment requirements. Keep total assembly height in mind, since adding layers affects flashing and edge heights. Layering boards with staggered joints improves thermal performance and reduces thermal bridging.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eConfirm the roof deck, attachment method and R-value requirements against local building codes, and use fall protection when installing insulation on the roof.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder Elevate polyiso insulation boards in your required thickness and sheet size today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Elevate","offers":[{"title":"Elevate 1.0 Iso 4' X 8'","offer_id":67587083829615,"sku":"58FSIS1048","price":33.46,"currency_code":"USD","in_stock":true},{"title":"Elevate 1.5 Iso 4' X 8'","offer_id":67587083862383,"sku":"58FSIS1548","price":34.6,"currency_code":"USD","in_stock":true},{"title":"Elevate 2.0 Iso 4' X 8'","offer_id":67587083895151,"sku":"58FSIS2048","price":52.17,"currency_code":"USD","in_stock":true},{"title":"Elevate 2.5 Iso 4' X 4'","offer_id":67587083927919,"sku":"58FSIS2544","price":39.13,"currency_code":"USD","in_stock":true},{"title":"Elevate 2.6 Iso 4' X 4'","offer_id":67587083960687,"sku":"58FSIS2644","price":20.98,"currency_code":"USD","in_stock":true},{"title":"Elevate 3.0 Iso 4' X 8'","offer_id":67587083993455,"sku":"58FSIS3048","price":85.05,"currency_code":"USD","in_stock":true},{"title":"Elevate 4.0 Iso 4' X 4'","offer_id":67587084026223,"sku":"58FSIS4044","price":77.12,"currency_code":"USD","in_stock":true},{"title":"Elevate 4.0 Iso 4' X 8'","offer_id":67587084058991,"sku":"58FSIS4048","price":120.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/Insulation-SKU_2240389-primary.jpg?v=1790448633","url":"https:\/\/superarbor.io\/products\/elevate-polyisocyanurate-roof-insulation-board-1-0-to-4-0-in-thicknesses-4-ft-x-8-ft-or-4","provider":"Super Arbor","version":"1.0","type":"link"}