{"product_id":"johns-manville-glasbase-plus-sbs-modified-bitumen-base-sheet-3-square-roll","title":"Johns Manville GlasBase Plus SBS Modified Bitumen Base Sheet, 3 Square Roll","description":"\u003ch1\u003eJohns Manville GlasBase Plus SBS Modified Bitumen Base Sheet, 3 Square Roll\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eJohns Manville GlasBase Plus is an SBS-modified bitumen membrane with a glass fiber reinforcement, used as a base sheet in built-up and modified bitumen roof systems. It is sold as a 3-square roll. It works with JM BUR and modified bitumen system components.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSBS modified:\u003c\/strong\u003e SBS-modified bitumen formulation for flexibility and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass reinforcement:\u003c\/strong\u003e Glass fiber reinforcement provides dimensional stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase sheet use:\u003c\/strong\u003e Designed as a base sheet for BUR and modified bitumen assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3 square roll:\u003c\/strong\u003e Each roll covers approximately 3 squares of roof area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastening patterns:\u003c\/strong\u003e JM publishes fastening pattern documents for tape-and-staple attached base applications.\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, 3 squares\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGlasBase Plus\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 glass fiber reinforcement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBUR \/ SBS modified bitumen base sheet\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\u003e3 squares per roll\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 sheet in low-slope commercial roofing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSee JM system approvals for the specified assembly\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 covers approximately 3 squares (300 sq ft) before lapping. Account for head and side laps per JM fastening patterns when estimating rolls.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003ePart of Johns Manville BUR and modified bitumen roofing systems; use with JM plies, adhesives and cap sheets per system specifications. Fastening per JM published patterns.\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 roll of GlasBase Plus covering about 3 squares.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I size the order?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Divide roof area by 3 squares per roll and add for laps and waste.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it attached?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It can be stapled or tape-attached following JM's published fastening patterns.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is it for low-slope roofs?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is a commercial low-slope base sheet membrane.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it require a cap sheet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, it serves as a base ply beneath JM cap membranes in a complete system.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eGlasBase Plus is a workhorse base ply for SBS systems; choose it where a glass-reinforced base with proven fastening patterns is needed. Follow JM's fastening pattern documents exactly for the deck type and wind exposure to maintain system approval. Order extra for laps and patches.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHandle hot asphalt or mechanical fastening equipment per safety guidelines and wear appropriate PPE during installation.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder Johns Manville GlasBase Plus base sheet rolls for your next BUR or SBS system.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Johns Manville","offers":[{"title":"Default Title","offer_id":67587177054575,"sku":"09MVGBP","price":139.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/glasbase-plus-2512x1413px.png?v=1790449503","url":"https:\/\/superarbor.io\/products\/johns-manville-glasbase-plus-sbs-modified-bitumen-base-sheet-3-square-roll","provider":"Super Arbor","version":"1.0","type":"link"}