{"product_id":"gaf-gaf4iso-gaf-energyguard-4-in-x-4-ft-x-8-ft-grade-ii-20-psi-polyiso-roof-insulation-panel","title":"GAF EnergyGuard 4 in. x 4 ft. x 8 ft. Grade-II (20 psi) Polyiso Roof Insulation Panel","description":"\u003ch1\u003eGAF EnergyGuard 4 in. x 4 ft. x 8 ft. Grade-II (20 psi) Polyiso Roof Insulation Panel\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis is a GAF EnergyGuard 4 in. polyisocyanurate roof insulation panel, 4 ft x 8 ft, Grade-II (20 psi) with glass fiber reinforced cellulosic felt facers bonded to a polyiso foam core. Each panel provides 32 sq ft of coverage and ships as a single piece. It pairs with GAF single-ply, mod bit and BUR roof systems, including tapered designs.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum thickness:\u003c\/strong\u003e The 4 in. profile delivers substantial thermal resistance in a single panel layer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 psi compressive strength:\u003c\/strong\u003e ASTM C1289 Type II, Class 1 Grade 2 rating provides 20 psi compressive strength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem approvals:\u003c\/strong\u003e Approved for use in mod bit, BUR and single-ply systems with FM 4450\/4470 and UL listings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMembrane compatible:\u003c\/strong\u003e Compatible with TPO and PVC membranes in adhered, mechanically attached and induction welded systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy handling:\u003c\/strong\u003e Lightweight panels are easy to cut in the field for faster installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFewer seams:\u003c\/strong\u003e One thick panel replaces multiple thinner lifts, reducing joints and labor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen building credit:\u003c\/strong\u003e Green Circle Certified for recycled content and contributes to green building rating systems.\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\u003eGAF\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 panel, 4 ft x 8 ft x 4 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\u003eEnergyGuard Polyiso 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 foam core with glass fiber reinforced cellulosic felt (GRF) facers\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, 4 in. thick\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrade \/ compressive strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGrade-II, 20 psi (ASTM C1289 Type II, Class 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage per panel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage per bundle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e384 sq ft (12 panels per bundle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePack quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 panel per piece; 12 pieces per bundle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplicable standards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM C1289, ASTM D1621, ASTM D2126, ASTM C209, ASTM E96, ASTM E84\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFM Approved; UL Classified; Florida Building Code Approved; Miami-Dade County Approved; PIMA Quality Mark\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem approval\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMod Bit, BUR, single-ply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23.904 lb per panel\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 panel covers 32 sq ft (4 ft x 8 ft). Bundles of 12 pieces cover 384 sq ft, so a 1,000 sq ft roof area needs roughly 32 panels. In tapered systems, panel count and slope layout should follow a tapered design plan.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eCompatible with GAF single-ply (TPO and PVC), modified bitumen and BUR roof systems in adhered, mechanically attached and induction welded applications. Membrane, adhesives and fasteners are sold separately; a cover board is required for UL Class A over combustible decks.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is included in this order?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One 4 in. thick, 4 ft x 8 ft EnergyGuard Grade-II (20 psi) polyiso insulation panel. Bundles ship 12 pieces covering 384 sq ft.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much area does one panel cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each panel covers 32 sq ft; a full 12-piece bundle covers 384 sq ft.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Which membrane systems is it compatible with?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is approved for mod bit, BUR and single-ply systems, and works with TPO and PVC in adhered, mechanically attached and induction welded assemblies.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the compressive strength?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This panel is ASTM C1289 Type II, Class 1 Grade 2, rated at 20 psi.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is a cover board required?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e For UL Class A over combustible decks, a cover board is required per GAF's listing notes.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How many panels do I need per square?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One roofing square (100 sq ft) requires just over 3 panels, so plan about 32 panels per 1,000 sq ft.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eA 4 in. panel maximizes R-value in one lift and minimizes seams, but confirm edge metal heights, fastener lengths and code-required attachment for the full assembly thickness. Verify uplift and fastener patterns with the membrane manufacturer before ordering. For roofs with ponding issues, combine flat panels like this with EnergyGuard tapered panels or crickets to establish positive drainage.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eInstall per GAF's instructions and local building code, and use fall protection when working on low-slope roofs.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder the GAF EnergyGuard 4 in. polyiso roof insulation panel for maximum R-value in one layer.\u003c\/strong\u003e\u003c\/p\u003e","brand":"GAF","offers":[{"title":"Default Title","offer_id":53521622630767,"sku":"GAF4ISO","price":96.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/47433_default_hero.jpg?v=1790180555","url":"https:\/\/superarbor.io\/products\/gaf-gaf4iso-gaf-energyguard-4-in-x-4-ft-x-8-ft-grade-ii-20-psi-polyiso-roof-insulation-panel","provider":"Super Arbor","version":"1.0","type":"link"}