{"product_id":"johns-manville-self-adhering-vapor-barrier-white-5-square-roll","title":"Johns Manville Self-Adhering Vapor Barrier, White, 5 Square Roll","description":"\u003ch1\u003eJohns Manville Self-Adhering Vapor Barrier, White, 5 Square Roll\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis Johns Manville self-adhering vapor barrier is a white polyethylene-faced sheet supplied as a roll covering 5 squares. It adheres directly to the substrate to block vapor and moisture in roofing and wall assemblies, with one roll per sell unit.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-adhering sheet:\u003c\/strong\u003e Adheres directly to the prepared substrate without mechanical fastening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolyethylene construction:\u003c\/strong\u003e Made from polyethylene to resist moisture and vapor transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive-square roll:\u003c\/strong\u003e Each roll covers 5 squares for efficient large-area installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite finish:\u003c\/strong\u003e White sheet is easy to see during installation and inspection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVapor protection:\u003c\/strong\u003e Functions as a vapor barrier within the building assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous roll:\u003c\/strong\u003e Roll format reduces seams compared with narrow sheets.\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, 5 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\u003eJohns Manville Vapor Barrier Self-Adhering\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\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolyethylene\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\u003e5 squares\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoll covering 5 squares\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-adhering vapor barrier sheeting\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 5 squares (500 sq ft). Divide the total barrier area by 500 sq ft per roll and add allowance for laps and cut waste when sizing the job.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eUse within Johns Manville roofing assemblies where a self-adhering vapor barrier is specified. Primers and termination or flashing accessories are sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What comes in one unit?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One self-adhering vapor barrier roll in white, covering 5 squares.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much does a roll cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each roll covers 5 squares, about 500 square feet, before laps and waste.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is it self-adhering?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the sheet adheres directly to the prepared substrate.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What material is it?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The barrier is made from polyethylene.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What color is it?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e White.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it need primer?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Follow the manufacturer's installation instructions regarding substrate priming and surface preparation.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eSelf-adhering vapor barriers are most effective when applied to a clean, dry surface with laps rolled down fully to eliminate air pockets. The 5-square roll suits larger wall and roof-perimeter areas where narrow sheets would create too many seams. Coordinate the barrier placement with the roof or wall assembly design so it sits on the correct side of the insulation.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eInstall within the temperature range stated in the manufacturer's instructions and use fall protection on elevated work surfaces.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder the Johns Manville self-adhering white vapor barrier roll, 5 squares, to seal your roofing or wall assembly.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Johns Manville","offers":[{"title":"Default Title","offer_id":53531877900655,"sku":"09MVVBSA5","price":493.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/Underlayment-Mineral-Surface-SKU_2209706-primary.jpg?v=1790369579","url":"https:\/\/superarbor.io\/products\/johns-manville-self-adhering-vapor-barrier-white-5-square-roll","provider":"Super Arbor","version":"1.0","type":"link"}