{"product_id":"gaf-dexcell-fa-glass-mat-roof-board-gypsum-cover-board-4-ft-x-8-ft-and-4-ft-x-4-ft-multipl","title":"GAF DEXcell FA Glass Mat Roof Board – Gypsum Cover Board, 4 ft x 8 ft and 4 ft x 4 ft, Multiple Thicknesses","description":"\u003ch1\u003eGAF DEXcell FA Glass Mat Roof Board – Gypsum Cover Board, 4 ft x 8 ft and 4 ft x 4 ft, Multiple Thicknesses\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eGAF DEXcell FA Glass Mat Roof Board is a gypsum cover board with heavy-duty coated fiberglass facers for use as a substrate board, thermal barrier, or insulation cover board in commercial roofing. Five sizes are offered, from 1\/4 in. x 4 ft x 4 ft to 5\/8 in. x 4 ft x 4 ft. Sold per piece.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture resistant:\u003c\/strong\u003e Gypsum core with coated fiberglass facers meets or exceeds ASTM C1177 for moisture resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMold resistant:\u003c\/strong\u003e Meets ASTM G21 and ASTM D3273 for mold resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealed surface:\u003c\/strong\u003e Precoated facers help improve membrane adhesive coverage and performance versus systems with no cover board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMay skip primer:\u003c\/strong\u003e May eliminate the need for a field primer per the applicable GAF system specification manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy handling:\u003c\/strong\u003e Scores and cuts easily; coated on front, back, and sides to reduce fiber fly and irritation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire protection:\u003c\/strong\u003e Can serve as a UL Class A thermal barrier and provides increased fire resistance pursuant to ANSI\/UL 790.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpact protection:\u003c\/strong\u003e As a cover board, protects the membrane from traffic and hail or impact damage pursuant to FM 44702.\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\u003eGAF\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\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 DEXcell FA Glass Mat Roof Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4 in. x 4 ft x 4 ft; 1\/4 in. x 4 ft x 8 ft; 1\/2 in. x 4 ft x 4 ft; 1\/2 in. x 4 ft x 8 ft; 5\/8 in. x 4 ft x 4 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGypsum core with heavy-duty coated fiberglass (glass mat) facers\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., 1\/2 in., or 5\/8 in.\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 or 4 ft x 8 ft panels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM C1177 (moisture), ASTM G21 and D3273 (mold), ANSI\/UL 790 (fire resistance), FM 44702 (impact\/hail protection), UL Class A thermal barrier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSubstrate board, thermal barrier, and\/or insulation cover board for commercial roofing\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\u003eEach panel covers 16 sq. ft. (4 ft x 4 ft) or 32 sq. ft. (4 ft x 8 ft); divide roof area by panel coverage, allowing for layout waste at edges.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eWorks in adhered single-ply, modified bitumen, liquid-applied membrane or coatings, spray foam, and metal roofing systems, and under vapor retarders. Consult the applicable GAF system specification manual for priming and assembly details.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What thicknesses and sheet sizes are available?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Five options: 1\/4 in. and 1\/2 in. in 4 ft x 4 ft and 4 ft x 8 ft sheets, plus 5\/8 in. in 4 ft x 4 ft.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much area does one sheet cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A 4 ft x 4 ft sheet covers 16 sq. ft.; a 4 ft x 8 ft sheet covers 32 sq. ft.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Do I need a primer under the membrane?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e DEXcell FA's precoated facers may eliminate the need for a field primer – consult the applicable system specification manual.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What is it used for?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e As a substrate board, thermal barrier, or insulation cover board protecting the membrane from traffic, hail, and impact.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Which roofing systems can it be used in?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Adhered single-ply, modified bitumen, liquid-applied systems and coatings, spray foam, and metal roofs.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How does it handle on site?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It scores and cuts easily and is coated on all faces to reduce fiber fly and irritation.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eMatch thickness to the system requirement – 1\/4 in. is common as a minimum cover board, while thicker panels add thermal-barrier and impact performance. Because the precoated faces improve adhesive coverage, keep faces clean and dry, stagger joints, and confirm primer needs against the specific system specification before mobilizing.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eGypsum panels are heavy – use two-person lifts or mechanical handling and wear gloves and eye protection when cutting.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder GAF DEXcell FA Glass Mat Roof Board in your choice of five sizes for tough, moisture-resistant cover board protection.\u003c\/strong\u003e\u003c\/p\u003e","brand":"GAF","offers":[{"title":"1\/2\" x 4' x 8'","offer_id":53522918080879,"sku":"GAF4833","price":32.75,"currency_code":"USD","in_stock":true},{"title":"5\/8\" x 4' x 4'","offer_id":53522918113647,"sku":"GAF4832","price":17.4,"currency_code":"USD","in_stock":true},{"title":"1\/4\" x 4' x 8'","offer_id":53522918146415,"sku":"GAF4834","price":29.5,"currency_code":"USD","in_stock":true},{"title":"1\/4\" x 4' x 4'","offer_id":53522918179183,"sku":"GAF4831","price":15.1,"currency_code":"USD","in_stock":true},{"title":"1\/2\" x 4' x 4'","offer_id":53522918211951,"sku":"GAF4830","price":16.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/GAF4833_0.jpg?v=1790233536","url":"https:\/\/superarbor.io\/products\/gaf-dexcell-fa-glass-mat-roof-board-gypsum-cover-board-4-ft-x-8-ft-and-4-ft-x-4-ft-multipl","provider":"Super Arbor","version":"1.0","type":"link"}