{"product_id":"fortifiber-fortiflash-butyl-flashing-membrane-self-sealing-25-mil-waterproof-vapor-retarde","title":"FortiFiber FortiFlash Butyl Flashing Membrane, Self-Sealing 25 mil Waterproof Vapor Retarder, 4 in. x 75 ft. Roll","description":"\u003ch1\u003eFortiFiber FortiFlash Butyl Flashing Membrane, Self-Sealing 25 mil Waterproof Vapor Retarder, 4 in. x 75 ft. Roll\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFortiFiber FortiFlash is a Class I, self-bonding, waterproof vapor retarder membrane combining an SBS modified asphalt layer with a high-strength cross-laminated polymer film. This 25 mil roll measures 4 in. x 75 ft. and self-seals around nails and fasteners for lasting watertightness.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass I barrier:\u003c\/strong\u003e A premium Class I vapor retarder and moisture barrier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-sealing:\u003c\/strong\u003e Self-seals around nails and fasteners for lasting watertightness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat resistant:\u003c\/strong\u003e Withstands extreme temperatures up to 250 degrees F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSplit-back liner:\u003c\/strong\u003e Split-back release design for easy handling during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConforms to detail:\u003c\/strong\u003e Installs around protrusions and into tight corners without delaminating or tearing.\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\u003eFortiFiber\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 roll, 4 in. x 75 ft. (25 mil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFortiFlash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 in. x 75 ft. roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSBS modified asphalt with high-strength cross-laminated high-density polymer film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 in. x 75 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWind \/ fire \/ impact rating as printed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass I vapor retarder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass I (as printed); other certifications not stated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWaterproof flashing; moisture barrier under wood panel subfloors over concrete slabs\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 roll measures 4 in. x 75 ft., yielding 25 linear feet of flashing per inch of width equivalent; a full roll is 75 linear feet of 4-inch-wide tape. Size jobs by linear footage of seams, window and door perimeters, or slab edges.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eSuited under floating or mechanically fastened wood panel subfloors beneath hardwood, carpet, laminate or resilient floors, and for flashing details around protrusions. Sold as a single roll; no fasteners or primers are included.\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 4 in. x 75 ft., 25 mil roll of FortiFlash butyl flashing membrane.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What does it self-seal around?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It self-seals around nails and fasteners to maintain watertightness.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Can it handle heat?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, it withstands extreme temperatures up to 250 degrees F.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How easy is installation?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A split-back release liner makes handling easy, and the membrane conforms to tight corners and protrusions without tearing.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What is it made of?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A two-part construction: an SBS modified asphalt base layer and a high-strength cross-laminated high-density polymer film.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much area does a roll cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One roll provides 75 linear feet of 4-inch-wide membrane; calculate coverage by the linear length of seams or perimeters you need to flash.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eFortiFlash is a go-to self-adhered flashing for window and door rough openings and under subfloors on concrete slabs, replacing old felt-asphalt assemblies without the mess. Prime porous substrates per manufacturer guidance, and roll the membrane firmly to activate full adhesion. For wider laps or heavy water exposure, step up to a wider roll width.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFollow the manufacturer's installation instructions and confirm flashing requirements with local building codes before enclosing the membrane behind finishes.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder FortiFiber FortiFlash 4 in. x 75 ft. self-sealing flashing membrane for watertight detailing.\u003c\/strong\u003e\u003c\/p\u003e","brand":"FortiFiber","offers":[{"title":"Default Title","offer_id":67583412470127,"sku":"FORFFWPM47525","price":28.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/FORFFWPM47525_0.jpg?v=1790407103","url":"https:\/\/superarbor.io\/products\/fortifiber-fortiflash-butyl-flashing-membrane-self-sealing-25-mil-waterproof-vapor-retarde","provider":"Super Arbor","version":"1.0","type":"link"}