{"product_id":"iko-4183133-iko-ikotherm-grade-ii-20-psi-polyiso-roof-insulation-board-4-in-x-4-ft-x-8-ft","title":"IKO IKOTherm Grade-II (20 psi) Polyiso Roof Insulation Board, 4 in. x 4 ft. x 8 ft.","description":"\u003ch1\u003eIKO IKOTherm Grade-II (20 psi) Polyiso Roof Insulation Board, 4 in. x 4 ft. x 8 ft.\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis IKO IKOTherm Grade-II polyisocyanurate roof insulation board measures 4 in. thick, 4 ft. x 8 ft., and is rated 20 psi compressive strength (Grade-II). It uses a kraft paper facer reinforced with glass fiber strands for high strength and strong adhesive or hot-mop absorption. Sold per piece; 9 boards cover one roofing square (100 sq ft).\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad system use:\u003c\/strong\u003e Designed to be part of modified bitumen, built-up, or single-ply roof systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh R-value per inch:\u003c\/strong\u003e Rigid polyiso foam with high thermal properties helps reduce heating and cooling costs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade-II 20 psi:\u003c\/strong\u003e Grade-II compressive strength rated at 20 psi for low-slope roof assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdhesion-ready facer:\u003c\/strong\u003e Kraft paper reinforced with fiberglass strands offers excellent absorption for hot mopping and adhesive attachment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical fastening:\u003c\/strong\u003e Also performs well when installed with mechanical fasteners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight handling:\u003c\/strong\u003e Lightweight boards are easy to handle and carry on the roof.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCode-listed:\u003c\/strong\u003e Meets ASTM C1289 and CAN\/ULC S-704, with FM Approval and UL Classification.\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\u003eIKO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4183133\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 in. x 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\u003eIKOTherm polyisocyanurate roof insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProfile \/ style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlat board, kraft\/fiberglass-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 x 4 in. thick\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\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolyisocyanurate foam, kraft paper facer reinforced with glass fiber strands\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\u003eApplicable standards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM C1289; CAN\/ULC S-704; FM Approved; UL Classified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21 lb per board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlgae resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModified bitumen, built-up, or single-ply low-slope roof insulation\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 4 ft x 8 ft board covers 32 sq ft of roof deck. Three boards give 96 sq ft, so allow 9 boards per roofing square (288 sq ft) to cover 100 sq ft with staggered joints and cuts.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eMade for modified bitumen, built-up and single-ply low-slope roof systems; install over decks and under membranes per IKO and system manufacturer specifications. Attachment adhesives, hot mop, mechanical fasteners and other thicknesses are sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: How many boards do I need for one square?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each 4 ft x 8 ft board covers 32 sq ft; plan on 9 boards (288 sq ft) per 100 sq ft square to account for cuts and joint stagger.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Can it be hot mopped?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. The fiberglass-reinforced kraft facer is designed with excellent absorption for both hot mopping and adhesive attachment, and also works with mechanical fasteners.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What compressive strength is Grade-II?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Grade-II is a 20 psi compressive-strength rating per the ASTM C1289 classification.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Which roof systems is it used in?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e IKOTherm is designed to be part of modified bitumen, built-up, or single-ply roof systems.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What size is each board?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This item is a 4 in. thick, 4 ft x 8 ft board; IKOTherm is also offered in other sizes and thicknesses, sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eThe 4 in. x 4 ft x 8 ft board is efficient for large decks, giving 32 sq ft per piece with fewer joints than 4x4 boards. For BUR and modified bitumen, the absorption-friendly kraft facer suits hot mop and adhesive attachment; for single-ply, stagger two layers and verify fastener density for uplift. Confirm the aged\/LTTR R-value from the board label for code compliance.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHot mopping and adhesive application require proper PPE and fire precautions; follow the membrane manufacturer's instructions and local code.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder the IKO IKOTherm 4 in. polyiso roof insulation board for efficient, high R-value coverage.\u003c\/strong\u003e\u003c\/p\u003e","brand":"IKO","offers":[{"title":"Default Title","offer_id":53529543672175,"sku":"4183133","price":62.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/688484_default_hero.jpg?v=1790351249","url":"https:\/\/superarbor.io\/products\/iko-4183133-iko-ikotherm-grade-ii-20-psi-polyiso-roof-insulation-board-4-in-x-4-ft-x-8-ft","provider":"Super Arbor","version":"1.0","type":"link"}