{"product_id":"johns-manville-90016271-johns-manville-enrgy-3-4-3-in-x-4-ft-x-8-ft-polyiso-roof-insulation-board-grade-ii-20-psi","title":"Johns Manville ENRGY 3 4.3 in. x 4 ft x 8 ft Polyiso Roof Insulation Board, Grade II (20 psi)","description":"\u003ch1\u003eJohns Manville ENRGY 3 4.3 in. x 4 ft x 8 ft Polyiso Roof Insulation Board, Grade II (20 psi)\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis Johns Manville ENRGY 3 board is a 4.3 in. thick, 4 ft x 8 ft Grade-II flat polyiso roof insulation with a closed-cell foam core and glass-reinforced facers. One board is one sell unit covering 32 sq ft. It installs mechanically fastened, with urethane adhesive or hot asphalt beneath JM single-ply and multi-ply systems.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh R-Value Core:\u003c\/strong\u003e The closed-cell polyisocyanurate foam core provides high R-value per inch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Facers:\u003c\/strong\u003e Glass-reinforced facers give rigidity and resistance to indentation and crushing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Deck Rated:\u003c\/strong\u003e Approved for direct application to steel decks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 psi Grade II:\u003c\/strong\u003e Meets ASTM C1289, Type II, Class 1, Grade 2 (20 psi compressive resistance).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Compatible:\u003c\/strong\u003e Compatible with BUR, modified bitumen and single-ply (TPO, PVC, EPDM) systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCode Approvals:\u003c\/strong\u003e UL Classified, FM approved, Miami-Dade County and Florida Building Code approved, PIMA QualityMark certified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLTTR 25.5:\u003c\/strong\u003e The 4.3 in. thickness carries an LTTR value of 25.5 (hr-ft2-F)\/BTU per the JM data sheet.\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\u003eJohns Manville\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90016271\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 4.3 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\u003eENRGY 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClosed-cell polyisocyanurate foam core with glass-reinforced facers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTan\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, 4.3 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\u003e4.3 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompressive strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGrade 2 (20 psi minimum)\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\u003eStandards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM C1289 Type II Class 1 Grade 2; CAN\/ULC S704 Type 2 \u0026amp; 3, Class 3; UL 790, 263, 1256; FM 4450\/4470\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePIMA QualityMark certified, UL Classified, FM Approved, Miami-Dade County approved, Florida Building Code approved, Title 24 compliant, LEED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23.942 lb per board\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 board covers 32 square feet of roof deck; divide total roof area by 32 to size board quantities.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eEligible for approved JM Peak Advantage roofing guarantees and compatible with JM TPO, PVC and EPDM single-ply systems as well as BUR, APP and SBS multi-ply systems, installed mechanically fastened, adhered or with hot asphalt. Fasteners, plates, adhesives and membranes are sold separately.\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 4.3 in. thick, 4 ft x 8 ft ENRGY 3 Grade-II polyiso roof insulation board.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How many boards do I need for my roof?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each 4 ft x 8 ft board covers 32 square feet; divide roof area by 32 and allow for waste.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is the board attached?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It can be mechanically fastened, installed in urethane adhesive, or set in hot asphalt per JM application guidelines.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What R-value does 4.3 in. provide?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The JM data sheet lists an LTTR of 25.5 (hr-ft2-F)\/BTU for the 4.3 in. thickness; actual R-value depends on installation conditions.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is it approved for direct steel deck application?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the closed-cell foam core is approved for direct application to steel decks.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it qualify for JM guarantees?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e ENRGY 3 is for use in approved JM Peak Advantage roofing guarantees.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eAt 4.3 in. this board delivers a high LTTR of 25.5 per JM's published table, letting you hit demanding R-value targets with fewer layers. Note that thicker boards at 20 psi still need fasteners long enough to penetrate the deck properly, so verify fastener length with total assembly thickness. Keep the large 4x8 panels flat and dry on the deck and follow JM's pre-securement patterns under mechanically fastened membranes.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eLarge rigid boards catch wind easily before fastening; stage and secure panels promptly and follow manufacturer installation instructions and local code.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder Johns Manville ENRGY 3 4.3 in. polyiso boards to maximize insulation value in your commercial roof.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Johns Manville","offers":[{"title":"Default Title","offer_id":53527340482927,"sku":"90016271","price":75.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/488425_default_hero.jpg?v=1790313993","url":"https:\/\/superarbor.io\/products\/johns-manville-90016271-johns-manville-enrgy-3-4-3-in-x-4-ft-x-8-ft-polyiso-roof-insulation-board-grade-ii-20-psi","provider":"Super Arbor","version":"1.0","type":"link"}