{"product_id":"mule-hide-densdeck-roof-cover-board-1-2-in-x-4-ft-x-8-ft-sheet-62mhdd1248","title":"Mule-Hide DensDeck Roof Cover Board, 1\/2 in. x 4 ft. x 8 ft. Sheet (62MHDD1248)","description":"\u003ch2\u003e1\/2 in. DensDeck gypsum roof cover board (4 ft. x 8 ft.)\u003c\/h2\u003e \u003cp\u003e\u003cstrong\u003eMule-Hide DensDeck is a rigid, glass-mat faced gypsum roof board used as a cover board, thermal barrier, or substrate in commercial low-slope roofing assemblies. Its noncombustible construction helps improve fire performance while adding durability and puncture\/foot-traffic resistance over the roof deck.\u003c\/strong\u003e\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eKey Features:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eCommercial Roof Cover Board:\u003c\/strong\u003e Rigid gypsum roof board for use as a cover board, thermal barrier, or substrate board in low-slope roof systems.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eDurable Glass-Mat Faced Construction:\u003c\/strong\u003e Fiberglass mats bonded to a high-density gypsum core help resist job-site damage and deterioration versus paper-faced boards.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eEnhanced Puncture \u0026amp; Foot-Traffic Resistance:\u003c\/strong\u003e Helps protect roofing assemblies from maintenance traffic and dropped tools.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eFire Performance:\u003c\/strong\u003e Noncombustible; tested to ASTM E84 with 0 flame spread and 0 smoke developed.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eStandard Sheet Size:\u003c\/strong\u003e 4 ft. x 8 ft. panel format for common commercial roofing layouts.\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch3\u003eSpecifications Table:\u003c\/h3\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e \u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eProduct name\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eMH 1\/2\" Densdeck 4X8\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eManufacturer SKU\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e62MHDD1248\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eInsulation \u0026amp; Weatherproofing\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSub-category\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eRoof Cover Boards\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eUnit of measure\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSheet (SH)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eNominal thickness\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1\/2 in (12.7 mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eNominal size\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e4 ft x 8 ft\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e8 ft (2438 mm) ± 1\/4 in (6.4 mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e4 ft (1219 mm) ± 1\/8 in (3 mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eItem weight\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e62.4 lb\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eR-value\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.28 (°F·ft²·hr\/BTU) (m²·K\/W)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eCompressive strength (nominal)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e900 psi\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eFlexural strength, parallel (min.)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e40 lbf (178 N)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePermeance\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u0026gt;50 perms (\u0026gt;2850 ng\/Pa·s·m²)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eWater absorption (max.)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u0026lt;10%\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSurface water absorption (nominal)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u0026lt;2.5 grams\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eHumidified deflection\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e≤1\/8 in (3 mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMold resistance\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e10\/10\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eFlame spread\/smoke developed (ASTM E84)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0\/0\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eFlute spanability\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e2-5\/8 in (67 mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eBending radius\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e5 ft (1524 mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eLinear variation with change in temperature\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e8.5 x 10^-6 in\/in\/°F (15.3 x 10^-6 mm\/mm\/°C)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eLinear variation with change in moisture\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e6.25 x 10^-6\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eApplicable standards (as listed)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eASTM C1177; ASTM C473; ASTM E661; ASTM E96; ASTM C518\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003chr\u003e \u003ch3\u003eFrequently Asked Questions (FAQ):\u003c\/h3\u003e \u003cp\u003e\u003cstrong\u003eQ: What is this board used for?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e It’s used in commercial low-slope roof assemblies as a cover board, thermal barrier, or substrate board under roofing membranes.\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eQ: What are the panel dimensions and thickness?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e This item is a 1\/2 in. thick panel in a 4 ft. x 8 ft. sheet size.\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eQ: Is it fire-rated\/noncombustible?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e Yes—DensDeck is described as noncombustible and reports 0\/0 (flame spread\/smoke developed) when tested to ASTM E84.\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eQ: How durable is it for rooftop foot traffic?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e It is designed to resist punctures from maintenance foot traffic and dropped tools and provides improved flute-spanning stiffness.\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eQ: How much does one sheet weigh?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e A listed item weight is 62.4 lb per board (confirm handling requirements for your jobsite and system design).\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eA Quiet Backbone for High-Performance Rooflines\u003c\/h3\u003e \u003cp\u003eThink of this DensDeck panel as the invisible couture layer in a roof assembly—sleek, disciplined, and relentlessly hardworking. Its glass-mat faced gypsum body brings a refined resilience that stands up to traffic, tools, and time, while reinforcing the system beneath the membrane. Use it to elevate the performance of a low-slope roof with a clean, confident substrate that feels purpose-built and enduring. It’s the kind of foundational material that makes “luxury” feel effortless—because true luxury starts with what you don’t see.\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eChoose Mule-Hide 1\/2 in. DensDeck 4x8 to add a tougher, more fire-conscious cover board layer to your commercial low-slope roofing assembly.\u003c\/strong\u003e\u003c\/p\u003e","brand":"GMC_Traffic","offers":[{"title":"Default Title","offer_id":55154291638563,"sku":"gmc16-01092","price":14.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/8730\/5507\/files\/b8233c87156ecc8c.jpg?v=1779819086","url":"https:\/\/a2ztoyshop.us.com\/products\/mule-hide-densdeck-roof-cover-board-1-2-in-x-4-ft-x-8-ft-sheet-62mhdd1248","provider":"Grandview Hobbies","version":"1.0","type":"link"}