{"product_id":"johns-manville-jmc05db4-johns-manville-duraboard-high-density-perlite-roof-cover-board-0-5-in-x-4-ft-x-4-ft","title":"Johns Manville DuraBoard High-Density Perlite Roof Cover Board, 0.5 in. x 4 ft x 4 ft","description":"\u003ch1\u003eJohns Manville DuraBoard High-Density Perlite Roof Cover Board, 0.5 in. x 4 ft x 4 ft\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis is a Johns Manville DuraBoard high-density, perlite-based roof cover board, 0.5 in. thick in a 4 ft x 4 ft panel, used as a hard protective layer over roof insulation beneath the membrane. One order unit is one panel covering 16 sq ft. It pairs with JM commercial roof insulation and membrane 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 the high-density perlite-based cover board in JM's insulation and cover board line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.5 in. thickness:\u003c\/strong\u003e The 0.5 in. thickness keeps roof build-up low while adding protection.\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\u003eLightweight:\u003c\/strong\u003e At about 9 lb per panel, it is quick to stage and install.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJM system fit:\u003c\/strong\u003e Made as an integral component of Johns Manville commercial roof 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\u003eSell unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 panel, 0.5 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, 0.5 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\u003e0.5 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\u003e9.01 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 is installed over JM roof insulation beneath JM membrane systems. Attachment fasteners, plates, or adhesives are per the specified roof assembly and sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What comes in one order?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One 0.5 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 do I need per square?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each panel covers 16 sq ft, so a roofing square requires about 6.25 panels plus waste allowance.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it attached?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Install over insulation with fasteners and plates or approved adhesive per the specified JM roof assembly.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What standards does it meet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is UL Classified, FM Approved, and Miami-Dade County Approved and conforms to ASTM C728, Type 2.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: When should I pick 0.5 in. versus thicker board?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Use 0.5 in. when the assembly specifies a lower profile cover board; confirm thickness against the project specification.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eThe 0.5 in. DuraBoard suits assemblies where cover-board height must be minimized, such as at transitions and drainage-sensitive layouts. Stagger joints over insulation joints and follow the specified attachment pattern for your wind zone. High-density perlite gives better surface durability than standard perlite at a modest cost.\u003c\/p\u003e\u003cp\u003e\u003cem\u003ePanels are brittle at corners and edges; handle with gloves and lift with proper technique to avoid breaks and injury.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eAdd the Johns Manville DuraBoard 0.5 in. high-density perlite cover board to your roofing order today.\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":53521628168559,"sku":"JMC05DB4","price":16.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/duraboard.png?v=1790180970","url":"https:\/\/superarbor.io\/products\/johns-manville-jmc05db4-johns-manville-duraboard-high-density-perlite-roof-cover-board-0-5-in-x-4-ft-x-4-ft","provider":"Super Arbor","version":"1.0","type":"link"}