{"product_id":"mfm-ultra-ht-wind-water-seal-high-temperature-underlayment-45-mil-36-in-x-67-ft-white","title":"MFM Ultra HT Wind \u0026 Water Seal High Temperature Underlayment 45 mil, 36 in. x 67 ft., White","description":"\u003ch1\u003eMFM Ultra HT Wind \u0026amp; Water Seal High Temperature Underlayment 45 mil, 36 in. x 67 ft., White\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eMFM Ultra HT Wind \u0026amp; Water Seal is a 45 mil self-adhering roofing underlayment engineered for whole-roof protection under shingle, tile, shake and metal roofing systems. The white, non-slip cross-laminated polyethylene film is laminated to a high-temperature rubberized asphalt adhesive rated to 250°F. One roll covers 36 in. x 67 ft., installed single-ply direct to the deck.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-temperature rated:\u003c\/strong\u003e Rated for high-temperature applications up to 250°F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener sealing:\u003c\/strong\u003e Bonds to the substrate and seals around fasteners to limit damage from water penetration or leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-slip surface:\u003c\/strong\u003e White non-slip polymer surface provides excellent foot traction during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhole-roof protection:\u003c\/strong\u003e Engineered for whole roof protection under shingle, tile, shake and metal roofing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-ply application:\u003c\/strong\u003e Installs as a single-ply membrane directly to the roof deck surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSplit release liner:\u003c\/strong\u003e Comes with a split release liner for easy installation.\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\u003eMFM\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, 36 in. x 67 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\u003eMFM Ultra HT Wind \u0026amp; Water Seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36 in. x 67 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36 in. x 67 ft. per roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCross-laminated polyethylene film with high-temperature rubberized asphalt adhesive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 mil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish \/ texture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite non-slip polymer surface\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\u003eApproximately 186 sq. ft. per roll before laps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh temperature applications up to 250°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIce and water \/ secondary water resistance underlayment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAssembly\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-adhering, single-ply installation direct to deck\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 36 in. x 67 ft. roll covers roughly 186 sq. ft.; subtract overlaps and dormer\/hip allowances when sizing. Apply laps per the roofing manufacturer's instructions for secondary water resistance.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eUse under shingle, tile, shake and metal roofing systems as a secondary water barrier. Requires proper roof ventilation as noted for secondary water resistance applications.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What roll size is this?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One roll measures 36 in. x 67 ft., approximately 186 sq. ft. before laps.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How hot can it get?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is rated for high-temperature applications up to 250°F, suitable under metal and tile.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it installed?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It installs single-ply directly to the roof deck, self-adhering with a split release liner.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is it safe to walk on during install?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the white non-slip polymer surface provides excellent foot traction.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What roofing does it work under?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is engineered for use under shingle, tile, shake and metal roofing systems.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it seal around nails?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, it bonds to the substrate and self-seals around fasteners.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eUltra HT is the right underlayment where metal or tile will drive deck temperatures beyond the limits of standard asphalt-based membranes. Keep the deck clean and dry, and roll laps firmly so the rubberized asphalt bonds fully. Ensure proper attic ventilation as part of any secondary water resistance design.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eThe non-slip surface improves traction but does not replace fall protection; use harnesses and follow OSHA roofing safety practices.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder MFM Ultra HT Wind \u0026amp; Water Seal Underlayment for whole-roof protection under metal, tile, shake and shingle.\u003c\/strong\u003e\u003c\/p\u003e","brand":"MFM","offers":[{"title":"Default Title","offer_id":53523955286383,"sku":"MFMU3667","price":141.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/ProductImage_MFMU3667.jpg?v=1790269868","url":"https:\/\/superarbor.io\/products\/mfm-ultra-ht-wind-water-seal-high-temperature-underlayment-45-mil-36-in-x-67-ft-white","provider":"Super Arbor","version":"1.0","type":"link"}