{"product_id":"johns-manville-90000659-johns-manville-duraboard-high-density-perlite-roof-cover-board-0-75-in-x-4-ft-x-4-ft","title":"Johns Manville DuraBoard High-Density Perlite Roof Cover Board, 0.75 in. x 4 ft x 4 ft","description":"\u003ch1\u003eJohns Manville DuraBoard High-Density Perlite Roof Cover Board, 0.75 in. x 4 ft x 4 ft\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis Johns Manville DuraBoard is a high-density, perlite-based roof cover board, 0.75 in. thick and 4 ft x 4 ft, used as a hard cover layer over roof insulation. Each order unit is one panel covering 16 sq ft. It installs beneath the membrane in JM commercial roof systems.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-density core:\u003c\/strong\u003e DuraBoard is a high-density, perlite-based cover board for demanding roof assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.75 in. thickness:\u003c\/strong\u003e A 0.75 in. thickness balances protection, weight, and build-up height.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16 sq ft per panel:\u003c\/strong\u003e Each 4 ft x 4 ft panel covers 16 square feet of roof area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCode-listed:\u003c\/strong\u003e UL Classified, FM Approved, and Miami-Dade County Approved to ASTM C728, Type 2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy handling:\u003c\/strong\u003e The panel weighs about 12 lb, making it easy to carry and place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJM system component:\u003c\/strong\u003e Designed as a cover board within Johns Manville commercial roofing 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\u003eManufacturer model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90000659\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 panel, 0.75 in. x 4 ft x 4 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\u003eDuraBoard High-Density Perlite Cover Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePerlite-based cover board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 ft x 4 ft, 0.75 in. thick\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.75 in.\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\u003e16 sq ft per panel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 lb per panel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL Classified; FM Approved; Miami-Dade County Approved; ASTM C728, Type 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCommercial low-slope roofing cover board over insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlgae resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\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 4 ft x 4 ft panel covers 16 square feet. Divide total roof area by 16 and add for cut waste around edges and penetrations.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eDuraBoard installs over JM roof insulation beneath JM single-ply or bituminous membrane systems. Attachment fasteners and plates or adhesives are specified by the roof assembly and sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is included in one order?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One 0.75 in. x 4 ft x 4 ft DuraBoard high-density perlite cover board panel.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How many panels per square?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A roofing square (100 sq ft) needs about 6.25 panels before waste, since each panel covers 16 sq ft.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it installed?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Set it over insulation and attach with fasteners\/plates or adhesive per the specified JM roof system assembly.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is it FM approved?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is FM Approved, UL Classified, and Miami-Dade County Approved to ASTM C728, Type 2.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How does it differ from standard perlite board?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e DuraBoard is the high-density version of JM's perlite cover board line for assemblies requiring greater density.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eHigh-density perlite boards like DuraBoard resist foot traffic and job-site damage better than standard perlite while staying affordable versus gypsum cover boards. Use the 0.75 in. thickness where the assembly calls for added cover height or where specified for wind uplift. Keep boards dry and store flat on the deck until attached.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eCover board panels are heavy and brittle at edges; lift properly and wear gloves to avoid cut edges during handling.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder the Johns Manville DuraBoard 0.75 in. high-density perlite cover board for your roofing assembly.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eProduct Documents:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.jm.com\/content\/dam\/jm\/global\/en\/commercial-roofing\/products\/assets\/application-guide\/rs-9417-product-weight-chart.pdf\" target=\"_blank\" rel=\"noopener\"\u003eInstallation Guide (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.jm.com\/content\/dam\/jm\/global\/en\/commercial-roofing\/products\/assets\/brochure\/rs-5134-perlite-advantages-sell-sheet-french.pdf\" target=\"_blank\" rel=\"noopener\"\u003eProduct Data Sheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.jm.com\/content\/dam\/jm\/global\/en\/commercial-roofing\/products\/assets\/sds-sui\/200000001890-us-1x.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Johns Manville","offers":[{"title":"Default Title","offer_id":53521631347055,"sku":"90000659","price":22.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/duraboard_9fe735c8-bd68-4bb5-b642-e93bd59270f1.png?v=1790181101","url":"https:\/\/superarbor.io\/products\/johns-manville-90000659-johns-manville-duraboard-high-density-perlite-roof-cover-board-0-75-in-x-4-ft-x-4-ft","provider":"Super Arbor","version":"1.0","type":"link"}