{"product_id":"carlisle-syntec-323588-carlisle-syntec-insulbase-0-5-in-4-ft-x-4-ft-grade-ii-20-psi-polyiso-roof-insulation","title":"Carlisle SynTec InsulBase 0.5 in. 4 ft x 4 ft Grade-II (20 psi) Polyiso Roof Insulation","description":"\u003ch1\u003eCarlisle SynTec InsulBase 0.5 in. 4 ft x 4 ft Grade-II (20 psi) Polyiso Roof Insulation\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eCarlisle SynTec InsulBase Grade-II rigid polyisocyanurate roof insulation board, 0.5 in. thick and 4 ft x 4 ft, rated 20 psi. Each board has a closed-cell polyiso core bonded to glass-reinforced felt facers, with a dark GRF side for ReadyFlash adhesive control. Pairs with Carlisle single-ply membrane systems.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid polyiso core:\u003c\/strong\u003e Closed-cell polyisocyanurate foam core bonded on each side to glass-reinforced felt facers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReadyFlash technology:\u003c\/strong\u003e Dark GRF on one side and light GRF on the other lets contractors control membrane adhesive flash-off times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 psi compressive strength:\u003c\/strong\u003e Grade-II (20 psi) board suitable for standard low-slope roof assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh R per inch:\u003c\/strong\u003e Polyiso provides the highest R-value per inch of commercially available insulation products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel deck approved:\u003c\/strong\u003e Approved for direct application to steel decks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEco-friendly formulation:\u003c\/strong\u003e Zero ozone-depleting components; HFC- and HCFC-free formulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad approvals:\u003c\/strong\u003e ASTM C1289 Type II Class 1 Grade 2; FM Class 1; UL Classified; IBC 2603; Florida Building Code approved.\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\u003eCarlisle SynTec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e323588\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, 0.5 in. x 4 ft x 4 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\u003eInsulBase\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) foam with glass-reinforced felt (GRF) 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 4 ft, 0.5 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\u003e0.5 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\u003e16 sq ft per board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompressive strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 psi (Grade II)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM C1289, Type II, Class 1, Grade 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIBC Section 2603; UL 790; UL 263; UL 1256; FM 4450\/4470 Class 1; Title 24; PIMA Quality Mark; CAN\/ULC S704 Type 2 \u0026amp; 3 Class 3; Florida Building Code; CDPH Compliant; UL Classified; LEED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.7 lb per board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLow-slope commercial roof insulation under membrane\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 4 ft board covers 16 sq ft of roof deck. Divide the roof area by 16 sq ft per board, then layer thicknesses as specified by the roof assembly design; boards sold individually.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eDesigned for Carlisle low-slope roofing systems under Carlisle single-ply membranes (EPDM, TPO) with Carlisle adhesives and fasteners. ReadyFlash GRF facers let you choose which side receives membrane adhesives; membrane, adhesives and fastening plates sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is included?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One 0.5 in. x 4 ft x 4 ft InsulBase Grade-II (20 psi) polyiso board; sold per piece.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How many boards cover a square (100 sq ft)?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each board covers 16 sq ft, so a roof square requires roughly 7 boards plus cutting waste.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What is ReadyFlash?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e InsulBase has a dark glass-reinforced felt on one side and light GRF on the other, letting the contractor pick which side receives membrane adhesive to manage flash-off times.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Can it go directly on a steel deck?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, InsulBase is approved for direct application to steel decks.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What standards does it meet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e ASTM C1289 Type II Class 1 Grade 2, plus UL 790\/263\/1256, FM 4450\/4470 Class 1, IBC 2603 and Florida Building Code approvals.\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 Grade-II board is rated 20 psi.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eInsulBase is the workhorse tapered and flat polyiso for low-slope Carlisle membrane roofs; use 20 psi Grade-II where typical membrane systems call for it, and step up to higher grades under heavy load paths. Layer multiple 0.5 in. boards to reach the assembly R-value specified by code and energy code. Always follow the roof assembly design and Carlisle installation instructions for attachment method.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFollow the roof assembly design, manufacturer installation instructions and local building codes; use proper roof-edge fall protection when working on low-slope roofs.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder Carlisle SynTec InsulBase 0.5 in. 20 psi polyiso boards for your low-slope roofing project.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carlisle","offers":[{"title":"Default Title","offer_id":53527327670639,"sku":"323588","price":10.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/402954_default_hero.jpg?v=1790313948","url":"https:\/\/superarbor.io\/products\/carlisle-syntec-323588-carlisle-syntec-insulbase-0-5-in-4-ft-x-4-ft-grade-ii-20-psi-polyiso-roof-insulation","provider":"Super Arbor","version":"1.0","type":"link"}