{"product_id":"johns-manville-jm-valuweld-s-cold-cap-base-sheet-app-modified-bitumen-roll-sand-39-3-8-in","title":"Johns Manville JM ValuWeld S Cold Cap\/Base Sheet APP Modified Bitumen Roll, Sand, 39-3\/8 in. x 33 ft","description":"\u003ch1\u003eJohns Manville JM ValuWeld S Cold Cap\/Base Sheet APP Modified Bitumen Roll, Sand, 39-3\/8 in. x 33 ft\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eJohns Manville ValuWeld S is an APP (atactic polypropylene) polymer and asphalt modified bitumen sheet used as a cap or base sheet in APP multi-ply roofing systems, supplied as one Sand-finish roll measuring 39-3\/8 in. x 33 ft. A fine mineral parting agent on both sides allows cold adhesive application, and the polyester reinforcement mat delivers tensile strength and puncture resistance. Pair with compatible JM APP multi-ply components.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-role sheet:\u003c\/strong\u003e Used as a cap or base sheet in APP multi-ply roofing systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable blend:\u003c\/strong\u003e Premium APP polymer and asphalt blend provides excellent weathering, flexibility and dimensional stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolyester reinforced:\u003c\/strong\u003e Polyester reinforcement mat offers good tensile strength, toughness and puncture resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandles movement:\u003c\/strong\u003e The reinforcement accommodates stresses created by typical rooftop expansion and contraction forces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold-applied:\u003c\/strong\u003e A fine mineral parting agent on both sides enables application using cold adhesive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy handling:\u003c\/strong\u003e Designed for ease of handling and quick installations.\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 33 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\u003eValuWeld S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e['Sand']\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 33 ft roll\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\u003ePolyester mat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFine mineral parting agent on both sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCap or base sheet in APP multi-ply roofing systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCold adhesive application enabled by mineral parting agent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBUR \u0026amp; MB systems membranes\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 39-3\/8 in. x 33 ft (about 1 roll per roughly 1 square of roof before laps and waste); calculate rolls by dividing roof area by the net coverage after side and end laps required by the JM system specification.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eIntended for APP multi-ply roofing systems as a cap or base sheet; pair with JM cold adhesive or torch application per the system specification. Confirm cap vs. base role and lap requirements with the specific JM system detail.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is included in one roll?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One roll of ValuWeld S in Sand, measuring 39-3\/8 in. x 33 ft.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the sheet made of?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A premium APP (atactic polypropylene) polymer and asphalt blend with a polyester reinforcement mat.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Can it be cold applied?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the fine mineral parting agent on both sides of the sheet enables application using cold adhesive.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What roles can it serve?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It can be used as a cap sheet or base sheet in APP multi-ply roofing systems.\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 Nominal coverage is based on the 39-3\/8 in. x 33 ft dimensions; deduct for laps and waste per your JM system specification.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How does it handle roof movement?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The polyester reinforcement accommodates stresses from typical rooftop expansion and contraction forces.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eValuWeld S is the value play in JM APP multi-ply assemblies, serving as either base or cap so one product covers two roles on the buy. The mineral parting agent on both faces means you can cold-adhere it where torching is restricted. Order laps and perimeters per the JM system spec, and stage rolls flat and off the deck if installation will be delayed.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFollow all JM application instructions and site safety requirements; if torch applied, keep fire watch and extinguishing equipment on hand.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder JM ValuWeld S Cold Cap\/Base Sheet rolls for your next APP multi-ply roof.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Johns Manville","offers":[{"title":"Default Title","offer_id":53522921816431,"sku":"JM90001857","price":112.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/ProductImage_JM90001857.jpg?v=1790233663","url":"https:\/\/superarbor.io\/products\/johns-manville-jm-valuweld-s-cold-cap-base-sheet-app-modified-bitumen-roll-sand-39-3-8-in","provider":"Super Arbor","version":"1.0","type":"link"}