{"product_id":"johns-manville-app-base-or-ply-sheet-39-375-in-x-49-ft-3-in-fiber-glass-reinforced-modifie","title":"Johns Manville APP Base or Ply Sheet 39.375 in. x 49 ft 3 in. Fiber Glass Reinforced Modified Bitumen","description":"\u003ch1\u003eJohns Manville APP Base or Ply Sheet 39.375 in. x 49 ft 3 in. Fiber Glass Reinforced Modified Bitumen\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eJM APP Base 2.0 SQ is an APP (atactic polypropylene) polymer-and-asphalt sheet used as a base or ply sheet in APP multi-ply roofing systems. The 39.375 in. x 49 ft 3 in. sheet is fiber glass reinforced for dimensional stability, with a mineral parting agent on top and a polyolefin burn-off film underneath for heat welding.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASTM D 6509:\u003c\/strong\u003e Meets the requirements of ASTM D 6509.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAPP durable blend:\u003c\/strong\u003e APP polymer and asphalt blend provides a durable sheet with excellent weathering, flexibility, and dimensional stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiber glass mat:\u003c\/strong\u003e Fiber glass reinforcement mat offers excellent dimensional stability and tensile strength and withstands differential movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo thermal memory:\u003c\/strong\u003e The fiber glass mat has no thermal memory, so less time is needed to relax the sheet for faster installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat-weld ready:\u003c\/strong\u003e A polyolefin burn-off film on the bottom side enables heat welding application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual role:\u003c\/strong\u003e Serves as either the base sheet or an intermediate ply in APP multi-ply systems.\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\u003eJohns Manville\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 sheet, 39.375 in. x 49 ft 3 in. (2.0 SQ)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJM APP Base 2.0 SQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e39.375 in. x 49 ft 3 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAPP (atactic polypropylene) polymer and asphalt blend\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReinforcement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFiber glass reinforcement mat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurfaces\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFine mineral parting agent on top; polyolefin burn-off film on bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMeets the requirements of ASTM D 6509\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase or ply sheet in APP multi-ply roofing systems\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\u003eThe sheet is designated 2.0 SQ, approximately 200 ft² nominal per roll before laps. Deduct side and end laps per the system specification when estimating.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eFor use within Johns Manville APP multi-ply roofing systems as a base or ply sheet. Cap sheets, adhesives, primers, and flashing materials are sold separately.\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 sheet measuring 39.375 in. x 49 ft 3 in., rated 2.0 SQ.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it applied?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The polyolefin burn-off film on the bottom side enables heat welding application; confirm the approved application method for your system.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much area does one sheet cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Nominal 2.0 SQ (about 200 ft²) before laps and waste.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What standard does it meet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It meets the requirements of ASTM D 6509.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Can it be used as a cap sheet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, it is designed as a base or ply sheet; a dedicated cap sheet is required for the exposed surface.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Why fiber glass reinforcement?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It provides dimensional stability, tensile strength, and resistance to differential movement, with no thermal memory for faster handling.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eAs a glass-mat APP sheet, this product relaxes quickly on the roof, which speeds up hot or heat-welded multi-ply installs compared with polyester-reinforced sheets that fight you with memory. Use it as the base or intermediate ply beneath a matching JM APP cap sheet, keeping laps properly mopped or welded. In cold weather, allow extra relaxation time and stage rolls flat before application.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHeat welding and torch work carry fire risk; use trained crews, fire watch, and follow local codes.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder JM APP Base or Ply Sheet for a dimensionally stable foundation in APP multi-ply roofing systems.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Johns Manville","offers":[{"title":"Default Title","offer_id":53524436386159,"sku":"JMABS","price":103.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/JMABS_0.jpg?v=1790284064","url":"https:\/\/superarbor.io\/products\/johns-manville-app-base-or-ply-sheet-39-375-in-x-49-ft-3-in-fiber-glass-reinforced-modifie","provider":"Super Arbor","version":"1.0","type":"link"}