{"product_id":"soprema-sopra-iso-polyiso-roof-insulation-board-4-ft-x-8-ft-3-in-or-4-in","title":"SOPREMA Sopra ISO Polyiso Roof Insulation Board, 4 ft x 8 ft, 3 in. or 4 in.","description":"\u003ch1\u003eSOPREMA Sopra ISO Polyiso Roof Insulation Board, 4 ft x 8 ft, 3 in. or 4 in.\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eSoprema Sopra ISO is a flat polyisocyanurate roof insulation board supplied in 4 ft x 8 ft sheets, available in 3 in. and 4 in. thicknesses. Each sheet is sold per piece and serves as the insulation layer in Soprema commercial low-slope roof assemblies, installed under the membrane with approved fasteners and plates.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat ISO board:\u003c\/strong\u003e Manufactured as flat ISO insulation for low-slope commercial roof assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 4 x 8 sheet:\u003c\/strong\u003e Each board measures 4 ft x 8 ft, giving 32 sq ft of coverage per sheet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo thicknesses:\u003c\/strong\u003e Offered in 3 in. and 4 in. thicknesses to meet project R-value and assembly requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem fit:\u003c\/strong\u003e Designed to work within Soprema's commercial roofing membrane systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePer-piece ordering:\u003c\/strong\u003e Sold by the piece, so you can order exactly the number of sheets your roof area requires.\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\u003eSoprema\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 piece, 4 ft x 8 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSopra ISO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 in. x 4 ft x 8 ft; 4 in. x 4 ft x 8 ft\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 board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 in. or 4 in. thickness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolyisocyanurate (flat ISO) insulation\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 4 ft x 8 ft sheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInsulation layer in commercial 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\u003eEach 4 ft x 8 ft sheet covers 32 sq ft. Divide the total roof area by 32 to estimate sheets, then add 5-10% for cuts, waste and perimeter fit, and plan board layout so end joints are staggered between rows.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eUse under Soprema SBS-modified bitumen, PMMA liquid-applied or single-ply PVC membrane systems with approved insulation fasteners and plates. Confirm the membrane system's approved insulation and attachment requirements before substituting other boards.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What sizes are available?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The line is offered in 3 in. and 4 in. thicknesses, both in a 4 ft x 8 ft sheet.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much does one sheet cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A 4 ft x 8 ft sheet covers 32 sq ft of roof area before waste allowance.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it attached?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Flat ISO board is typically mechanically attached with insulation fasteners and plates; use approved Soprema HD fasteners and follow the specified fastening density.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Can it be used under any membrane?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is intended for Soprema commercial roofing assemblies; verify compatibility with your specific membrane system before ordering.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I calculate my order?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Divide roof area by 32 sq ft per sheet, then add waste for perimeter cuts and staggered joints.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003ePolyiso is the standard choice for commercial low-slope roofs when you need high R-value per inch; pick 4 in. over 3 in. where the project's total R-value target demands it or to reduce layer count. Store sheets off the ground and under cover until install day, and stagger board joints between rows. Order the matching fastener length for the board thickness plus deck penetration. Confirm the system specification allows flat ISO in the given thickness before substitution.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHandle boards with care on the roof and keep insulation dry before covering; do not install over a wet or damaged deck.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eGet Soprema Sopra ISO polyiso insulation in 3 in. or 4 in. for your next commercial roof.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Soprema","offers":[{"title":"Default Title","offer_id":53522953994607,"sku":"SOP316960","price":81.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/SOP40474_0.png?v=1790235046","url":"https:\/\/superarbor.io\/products\/soprema-sopra-iso-polyiso-roof-insulation-board-4-ft-x-8-ft-3-in-or-4-in","provider":"Super Arbor","version":"1.0","type":"link"}