{"product_id":"tarco-15-astm-d226-organic-felt-underlayment-4-squares-per-roll","title":"Tarco 15# ASTM D226 Organic Felt Underlayment, 4 Squares per Roll","description":"\u003ch1\u003eTarco 15# ASTM D226 Organic Felt Underlayment, 4 Squares per Roll\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eTarco Felt 15# is ASTM D226 No. 15 organic felt underlayment supplied in rolls covering 4 squares. It installs horizontally from the bottom of the roof deck beneath asphalt shingles. Each order unit is one roll.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASTM D226:\u003c\/strong\u003e Manufactured to ASTM D226 as 15# organic felt underlayment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 squares per roll:\u003c\/strong\u003e Each roll covers 4 roofing squares (400 sq. ft. nominal).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrganic felt:\u003c\/strong\u003e Traditional organic felt construction for steep-slope underlayment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorizontal install:\u003c\/strong\u003e Organic felt rolls must be installed horizontally, starting from the bottom of the roof deck.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShingle underlayment:\u003c\/strong\u003e Serves as the felt underlayment layer beneath asphalt shingle roofing.\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\u003eTarco\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 roll, 4 squares\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTarco Felt 15#\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOrganic felt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15# ASTM D226, 4 squares per roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM D226\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\u003e4 squares (roll)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHorizontal, from the bottom of the roof deck\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eResidential roof underlayment beneath shingles\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 roll covers 4 squares (400 sq. ft. nominal) before laps. Divide your roof area by 4 squares per roll and add rolls for horizontal lap allowances, which reduce effective coverage.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eUsed as the felt underlayment layer under asphalt shingle roof systems. Pair with shingles, starter and ridge products from the same roofing assembly; head laps and side laps should follow the shingle manufacturer's specifications.\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 Each order is one roll of Tarco 15# ASTM D226 organic felt underlayment covering 4 squares.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How many rolls do I need?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Divide roof area by 4 squares per roll and add extra for laps at horizontal courses.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it installed?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Organic felt rolls must be installed horizontally, starting from the bottom of the roof deck and lapping courses shingle-style.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What standard does it meet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is listed as ASTM D226 15# felt.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is it self-adhering?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, it is a mechanically fastened organic felt; use a separate self-adhered product where ice and water protection is required.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eNo. 15 felt remains a cost-effective underlayment for standard slopes and dry-weather installs. Keep rolls dry before and during installation because organic felt can wrinkle when wet. Install horizontally from the eaves up with the laps specified by the shingle manufacturer, and step up to synthetic or self-adhered underlayment on low slopes or long exposure windows.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFelt underlayment is slippery, especially when wet or dusty; wear proper footwear and use fall protection on the roof deck.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder Tarco 15# ASTM D226 felt underlayment in 4-square rolls for your next shingle roof.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Tarco","offers":[{"title":"Default Title","offer_id":53523962823023,"sku":"TAR15D226","price":52.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/ProductImage_TAR15F_ba133326-38e3-4f2f-ad1c-453cc040c89a.jpg?v=1790269921","url":"https:\/\/superarbor.io\/products\/tarco-15-astm-d226-organic-felt-underlayment-4-squares-per-roll","provider":"Super Arbor","version":"1.0","type":"link"}