{"product_id":"u-s-gypsum-221852-u-s-gypsum-securock-glass-mat-roof-board-5-8-in-x-4-ft-x-8-ft","title":"U.S. Gypsum SecuRock Glass-Mat Roof Board 5\/8 in. x 4 ft. x 8 ft.","description":"\u003ch1\u003eU.S. Gypsum SecuRock Glass-Mat Roof Board 5\/8 in. x 4 ft. x 8 ft.\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eU.S. Gypsum SecuRock Glass-Mat Roof Board is a 5\/8-inch-thick, 4 ft. x 8 ft. glass-mat gypsum roof cover board, one piece per order unit at about 88 lb. It provides a durable thermal barrier and cover board layer in low-slope roof assemblies, installed under or over the membrane per the roof system design.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8 in. glass-mat board:\u003c\/strong\u003e Glass-mat gypsum core faced for strength and moisture resistance in roof assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 ft. x 8 ft. board:\u003c\/strong\u003e Standard 4 ft. x 8 ft. panel size for efficient layout on low-slope roofs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL Classified, FM Approved:\u003c\/strong\u003e UL Classified and FM Approved per the listed standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eICC-ES ESR 3044:\u003c\/strong\u003e Covered by ICC-ES evaluation report ESR-3044.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple ASTM standards:\u003c\/strong\u003e Applicable to ASTM D3273, E84, E136, C1177 and E96.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal barrier \/ cover board:\u003c\/strong\u003e Used in roof assemblies as cover board and thermal barrier per the roof system design.\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\u003eU.S. Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e221852\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 board, 5\/8 in. x 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\u003eSecuRock Glass-Mat Roof Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5\/8 in. x 4 ft. x 8 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5\/8 in.\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\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGlass-mat gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplicable standards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM D3273; ASTM E84; ASTM E136; ASTM C1177; ASTM E96; ICC-ES ESR-3044; UL Classified; FM Approved\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e88 lb\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 \/ thermal barrier in low-slope roof assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoofing Insulation\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 5\/8 in. x 4 ft. x 8 ft. board covers 32 sq ft of roof area. Divide total roof square footage by 32 (before fasteners, laps and waste) to estimate board count for a job.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eInstalled in approved low-slope roof assemblies over roof insulation or deck and under (or above, per system design) the membrane; coordinate with the membrane manufacturer's cover board acceptance and fastening requirements. Adhesive and fastening plates are sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What size is each board?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each board is 5\/8 in. thick and 4 ft. x 8 ft., covering 32 sq ft.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much does one board weigh?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Approximately 88 lb per board.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What is it used for?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It serves as a cover board and thermal barrier layer in low-slope roof assemblies.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is it code evaluated?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is listed with ICC-ES ESR-3044, UL Classified and FM Approved, plus ASTM D3273, E84, E136, C1177 and E96.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I size my order?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e At 32 sq ft per board, divide your roof area by 32 and add waste per the installer's standard practice.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eSecuRock glass-mat roof board adds impact resistance and dimension stability beneath single-ply membranes, and its UL\/FM listings support many rated assemblies — always match the exact assembly in ESR-3044 or the FM approval guide. Stagger board joints, fasten per the roof system manufacturer's spacing, and keep boards dry before the membrane goes on. Confirm wind uplift design with your fastening pattern.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eBoards are heavy (about 88 lb) and gypsum dust is produced when cut — use two-person or mechanical handling and wear dust protection and gloves.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder U.S. Gypsum SecuRock Glass-Mat Roof Board 5\/8 in. x 4 ft. x 8 ft. for your low-slope roof assembly.\u003c\/strong\u003e\u003c\/p\u003e","brand":"U.S. Gypsum","offers":[{"title":"Default Title","offer_id":53529512837487,"sku":"221852","price":41.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/418320_default_hero.jpg?v=1790350681","url":"https:\/\/superarbor.io\/products\/u-s-gypsum-221852-u-s-gypsum-securock-glass-mat-roof-board-5-8-in-x-4-ft-x-8-ft","provider":"Super Arbor","version":"1.0","type":"link"}