{"product_id":"johns-manville-jm-r-13-fsk-faced-fiberglass-batt-insulation-24-in-x-96-in-176-sq-ft","title":"Johns Manville JM R-13 FSK Faced Fiberglass Batt Insulation, 24 in x 96 in (176 sq ft)","description":"\n    \u003ch1\u003eR-13 FSK Faced Fiberglass Batt Insulation (24\" x 96\")\u003c\/h1\u003e\n    \u003cp\u003e\u003cstrong\u003eJohns Manville R-13 fiberglass batt insulation with FSK (foil-scrim-kraft) facing helps improve thermal and acoustical performance while adding a vapor retarder. The flame-resistant facing is rated 25\/50 or less per ASTM E84 where codes permit, making it a strong choice for steel-stud framing and a wide range of wall and ceiling applications.\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-25 Vapor Retarder Facing:\u003c\/strong\u003e Foil-scrim-kraft facing adds vapor control and a clean, light-reflective surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire Performance Rated:\u003c\/strong\u003e Designed to meet 25\/50 or less per ASTM E84 for flame spread\/smoke developed where codes permit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal + Sound Control:\u003c\/strong\u003e Helps resist heat transfer and reduces sound transmission through walls, floors, and ceilings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormaldehyde-Free Fiberglass:\u003c\/strong\u003e Will not off-gas formaldehyde in the indoor environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable, Dimensionally Stable Batts:\u003c\/strong\u003e Inorganic glass fibers resist rot\/mildew and are designed not to slump or settle in cavities.\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\u003eR-Value\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eR-13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e176 sq-ft\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e96 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-1\/2 in\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\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\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\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\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\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\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer Part #\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFSK495\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 is a foil-scrim-kraft facing laminated to the fiberglass batt; it can act as a vapor retarder and helps the product achieve a fire-hazard classification of 25\/50 or less per ASTM E84 (where codes permit).\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: Where can this batt insulation be used?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e It’s listed for a wide variety of wood frame, engineered wood, and steel frame construction, and is noted for use with steel stud framing.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What are the key fire-rating properties?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e The product lists a flame spread index of \u0026lt;25 and a smoke developed index of \u0026lt;50.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What are the batt dimensions and thickness?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e Each batt is 24 in wide x 96 in long and 3-1\/2 in thick, with an R-value of 13.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: Does it help with moisture control?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e The facing serves as an excellent vapor retarder, with listed water vapor permeability of 0.05 perm-in and water vapor sorption of \u0026lt;5%.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003ch2\u003eA clean, light-catching layer that quietly elevates comfort\u003c\/h2\u003e\n    \u003cp\u003eThere’s a refined practicality to an FSK-faced batt—the crisp foil surface feels almost architectural, bringing a subtle, light-reflective order to the unseen layers of a room. With R-13 performance and an integrated vapor retarder, it helps shape interiors that feel calmer, warmer, and acoustically composed. Use it behind walls and ceilings where you want comfort to read as effortless—especially in metal-stud builds that demand precision. It’s the kind of foundational detail that makes luxury feel inevitable.\u003c\/p\u003e\n    \n    \u003chr\u003e\n    \u003cp\u003e\u003cstrong\u003eUpgrade your wall or ceiling assembly with JM R-13 FSK faced batts for efficient comfort, sound control, and a built-in vapor retarder.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp\u003e\u003ca href=\"https:\/\/superarbor.io\/cdn\/shop\/files\/Warranty_HIG-267.pdf?v=1766980661\" target=\"_blank\"\u003eWarranty\u003c\/a\u003e\u003c\/p\u003e\n    \n    ","brand":"JM","offers":[{"title":"Default Title","offer_id":52533937832303,"sku":"31979110636","price":99.42,"currency_code":"USD","in_stock":true}],"url":"https:\/\/superarbor.io\/products\/johns-manville-jm-r-13-fsk-faced-fiberglass-batt-insulation-24-in-x-96-in-176-sq-ft","provider":"Super Arbor","version":"1.0","type":"link"}