{"product_id":"jm-johns-manville-r-19-fsk-faced-fiberglass-batt-insulation-24-in-x-48-in-x-6-1-2-in-144-sq-ft","title":"JM Johns Manville R-19 FSK Faced Fiberglass Batt Insulation 24 in x 48 in x 6-1\/2 in (144 sq-ft)","description":"\n    \u003ch1\u003eR-19 FSK Faced Fiberglass Batt Insulation\u003c\/h1\u003e\n    \u003cp\u003e\u003cstrong\u003eJM (Johns Manville) R-19 fiberglass batt insulation with FSK (foil-scrim-kraft) facing helps reduce heat transfer while also providing a vapor retarder for framed wall and ceiling assemblies. The flame-resistant facing supports a 25\/50 or less fire-hazard classification per ASTM E84 where codes permit exposed installation.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003chr\u003e\n    \u003ch2\u003eKey Features:\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFSK Vapor-Retarder Facing:\u003c\/strong\u003e Foil-scrim-kraft (FSK-25) facing helps control moisture while improving durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal + Acoustic Performance:\u003c\/strong\u003e R-19 thermal resistance helps limit heat transfer and can reduce sound transmission through assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire-Resistant Construction:\u003c\/strong\u003e Designed to meet 25\/50 or less fire-hazard classification per ASTM E84 when applicable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormaldehyde-Free Fiberglass:\u003c\/strong\u003e Made to avoid off-gassing formaldehyde in indoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable, Non-Corrosive Fibers:\u003c\/strong\u003e Inorganic glass fibers resist rot and mildew and won’t corrode pipes, wiring, or metal studs.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003chr\u003e\n    \u003ch2\u003eSpecifications Table:\u003c\/h2\u003e\n    \u003ctable\u003e\n        \u003cthead\u003e\n            \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\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n            \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBatt Insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFiberglass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJohns Manville\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDI part #\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e031979110063\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer part #\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFSK444\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFor Wide Variety of Wood Frame, Engineered Wood and Steel Frame Construction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFacing type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFSK-25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlame spread index\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFor use with\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteel Stud Framing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eItem name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBuilding and Residential Fiberglass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eR-value\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e144 sq-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSmoke developed index\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecial features\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReinforced, Flame Resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater vapor permeability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.05 perm-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater vapor sorption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandards\/Certifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM C665 Type III Class A Category I|Energy Star Certified|IBC|Indoor Air Quality Certified|NAIMA 16 CFR Part 460|Recycled Content Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n    \u003c\/table\u003e\n    \u003chr\u003e\n    \u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What does FSK-faced mean?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e FSK stands for foil-scrim-kraft; this product uses an FSK-25 facing that also serves as a vapor retarder.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What framing types is this batt intended for?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e It is listed for use with steel stud framing and a wide variety of wood frame, engineered wood, and steel frame construction.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What are the fire\/smoke ratings?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e Flame spread index is listed as \u0026lt;25 and smoke developed index as \u0026lt;50.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What area does this package cover?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e The product listing indicates 144 sq-ft coverage.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003ch2\u003eA Clean, Reflective Layer of Comfort Behind the Walls\u003c\/h2\u003e\n    \u003cp\u003eThink of this FSK-faced batt as the quiet luxury you don’t see—but feel. The crisp foil facing reads like a tailored finish behind the scenes, pairing thermal efficiency with a smart vapor-retarder layer. Use it to refine envelopes in basements, exterior walls, or ceilings where performance and polish matter. It’s the kind of foundational upgrade that makes a home feel effortlessly more elevated.\u003c\/p\u003e\n    \n    \u003chr\u003e\n    \u003cp\u003e\u003cstrong\u003eUpgrade your build with JM R-19 FSK-faced fiberglass batts for dependable thermal comfort, sound control, and vapor-retarder performance.\u003c\/strong\u003e\u003c\/p\u003e\n    \n    \n    ","brand":"JM","offers":[{"title":"Default Title","offer_id":52533938454895,"sku":"31979110063","price":94.14,"currency_code":"USD","in_stock":true}],"url":"https:\/\/superarbor.io\/products\/jm-johns-manville-r-19-fsk-faced-fiberglass-batt-insulation-24-in-x-48-in-x-6-1-2-in-144-sq-ft","provider":"Super Arbor","version":"1.0","type":"link"}