{"product_id":"gaf-densdeck-1-4-in-roof-board-4-ft-x-8-ft-gray-gypsum-cover-board","title":"GAF DensDeck 1\/4 in. Roof Board, 4 ft x 8 ft Gray Gypsum Cover Board","description":"\u003ch1\u003eGAF DensDeck 1\/4 in. Roof Board, 4 ft x 8 ft Gray Gypsum Cover Board\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis is GAF DensDeck 1\/4 in. roof board, a gray gypsum cover board supplied in 4 ft x 8 ft sheets and sold per sheet. It installs between insulation and the roof membrane to protect the insulation, improve membrane puncture resistance and create a uniform substrate. One sheet is one order unit.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGypsum cover board:\u003c\/strong\u003e DensDeck is a glass-mat gypsum roof cover board from GAF.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMembrane protection:\u003c\/strong\u003e Installed under the membrane to shield insulation and improve puncture resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniform substrate:\u003c\/strong\u003e Provides a flat, consistent surface for adhered or mechanically attached membranes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 x 8 sheet:\u003c\/strong\u003e Each sheet covers 32 sq ft for quick area takeoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4 in. thickness:\u003c\/strong\u003e The thinnest standard cover board thickness, suited where build-up height is limited.\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\u003eDensDeck\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 sheet, 4 ft x 8 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\u003eGAF DensDeck Roof Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor \/ finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 ft x 8 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoof cover board under low-slope membrane systems\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 8 ft sheet covers 32 sq ft of roof area. Divide the roof area by 32 and add allowance for waste and laps at joints to size your order.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eUse under approved low-slope membrane systems over polyiso or other approved insulation. Boards are fastened or adhered per the roofing system specification; fasteners, adhesive and membrane are sold separately.\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 4 ft x 8 ft sheet of 1\/4 in. gray DensDeck gypsum roof board.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How many sheets do I need?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each sheet covers 32 sq ft; divide roof area by 32 and add 5 to 10 percent for waste and joints.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Why add a cover board?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A cover board protects the insulation below the membrane, improving puncture resistance and giving the membrane a uniform surface.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it attached?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Attachment method is not stated here; follow the roofing system manufacturer's approved fastening or adhering requirements.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Are thicker DensDeck options available?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e DensDeck roof board is offered in other thicknesses through related product lines, including 1\/2 in. and 5\/8 in. primed options.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eA 1\/4 in. cover board is the go-to where overall assembly height is tight but a protective layer over polyiso is still required. Stagger joints between the cover board and the insulation below so seams do not stack, and leave a small gap at board joints per the system spec. Where heavy foot traffic or ballasted systems are involved, consider a thicker cover board.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eGypsum boards are heavy and edges are sharp; carry sheets with a partner and wear gloves, and keep board edges supported to avoid breakage.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder GAF DensDeck 1\/4 in. roof board by the 4 ft x 8 ft sheet for your membrane assembly.\u003c\/strong\u003e\u003c\/p\u003e","brand":"DensDeck","offers":[{"title":"Default Title","offer_id":53531863023983,"sku":"62GADD1448","price":29.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/Insulation-SKU_2354902-primary.jpg?v=1790369450","url":"https:\/\/superarbor.io\/products\/gaf-densdeck-1-4-in-roof-board-4-ft-x-8-ft-gray-gypsum-cover-board","provider":"Super Arbor","version":"1.0","type":"link"}