{"product_id":"johns-manville-dynaweld-base-sbs-modified-bitumen-base-and-ply-sheet-39-3-8-in-x-32-ft-10","title":"Johns Manville DynaWeld Base SBS Modified Bitumen Base and Ply Sheet, 39-3\/8 in. x 32 ft 10 in. Roll","description":"\u003ch1\u003eJohns Manville DynaWeld Base SBS Modified Bitumen Base and Ply Sheet, 39-3\/8 in. x 32 ft 10 in. Roll\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eJM DynaWeld Base is a fiber glass-reinforced SBS modified bitumen sheet used as a base or ply sheet in multi-ply roofing systems. Each roll measures 39-3\/8 in. x 32 ft 10 in., in black. Its SBS rubber-asphalt blend gives the sheet the elasticity to handle roof expansion and contraction.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase or Ply Use:\u003c\/strong\u003e Used as a fiber glass-reinforced base or ply sheet in a variety of multi-ply roofing systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNonblocking Surface:\u003c\/strong\u003e Fine mineral parting agent creates a nonblocking surface suitable as a base sheet or ply sheet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSBS Flexibility:\u003c\/strong\u003e SBS rubber and asphalt blend lends elasticity and accommodates continual roof expansion and contraction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensional Stability:\u003c\/strong\u003e Fiber glass reinforcement mat offers excellent dimensional stability and tensile strength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e No thermal memory means less time relaxing the sheet, speeding 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\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 roll, 39-3\/8 in. x 32 ft 10 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDynaWeld Base SBS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e39-3\/8 in. x 32 ft 10 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e39-3\/8 in. x 32 ft 10 in. roll\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 bitumen with fiber glass reinforcement mat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish \/ texture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack, fine mineral parting agent surface\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 multi-ply BUR and modified bitumen roof 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\u003eOne 39-3\/8 in. x 32 ft 10 in. roll covers roughly 108 sq ft at full width; actual coverage is less once laps and perimeter waste are accounted for. Plan laps per the system specification and add 10-15% for waste.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eIntended for multi-ply BUR and SBS modified bitumen assemblies, paired with appropriate membranes, adhesives or hot asphalt per the roof specification. Membranes, adhesives and flashing materials are sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What does one roll cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One roll measures 39-3\/8 in. x 32 ft 10 in. (about 108 sq ft nominal); deduct laps and waste when estimating.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Can it be used as a flashing sheet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the product line is designated for use as a base, ply or flashing sheet in multi-ply systems.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Why SBS modified bitumen?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The SBS rubber-asphalt blend gives elasticity and recovery so the sheet handles constant roof expansion and contraction.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is the surface self-sticking?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this is a base\/ply sheet with a fine mineral parting agent; it must be installed with the system's specified adhesive, asphalt or torch application.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Does the sheet hold its shape during install?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the fiber glass mat provides dimensional stability and has no thermal memory, so the sheet relaxes quickly.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What color is the sheet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Black.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eDynaWeld Base is a dependable choice for base and ply courses in multi-ply assemblies where dimensional stability matters. Its lack of thermal memory lets the sheet lie flat quickly, which shortens installation time. Keep rolls protected from moisture before use and follow the specified lap and application method for the membrane system above.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHot asphalt and torch application of modified bitumen carry fire and burn hazards; follow the specified application method and use proper protective equipment.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder Johns Manville DynaWeld Base SBS sheet now for durable multi-ply roofing assemblies.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Johns Manville","offers":[{"title":"Default Title","offer_id":53524436746607,"sku":"JMDWSB1","price":92.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/JMDWSB1_0.jpg?v=1790284072","url":"https:\/\/superarbor.io\/products\/johns-manville-dynaweld-base-sbs-modified-bitumen-base-and-ply-sheet-39-3-8-in-x-32-ft-10","provider":"Super Arbor","version":"1.0","type":"link"}