{"product_id":"tri-built-trigmc30f226m-tri-built-39-38-in-x-30-astm-d226-type-ii-asphalt-felt-underlayment-roll-metric","title":"TRI-BUILT 39.38 in. x #30 ASTM D226 Type II Asphalt Felt Underlayment Roll, Metric","description":"\u003ch1\u003eTRI-BUILT 39.38 in. x #30 ASTM D226 Type II Asphalt Felt Underlayment Roll, Metric\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis TRI-BUILT #30 asphalt-saturated felt underlayment is a 39.38 in. wide metric roll that meets ASTM D226 Type II. It is sold as a roll and installs beneath shingles as a secondary water-shedding layer. Pair it with compatible drip edge and starter products for a complete roof system.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASTM D226 Type II:\u003c\/strong\u003e Manufactured to meet ASTM D 226 Type II, the standard for No. 30 asphalt-saturated organic felt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetric width:\u003c\/strong\u003e 39.38 in. metric roll width for standard coverage lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo. 30 weight:\u003c\/strong\u003e #30 (30 lb) felt provides a heavier, more durable underlayment layer than #15.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShingle underlayment:\u003c\/strong\u003e Installed under asphalt shingles and other roof coverings as a secondary layer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold by the roll:\u003c\/strong\u003e One roll per selling unit, approximately 57 lb.\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\u003eTRI-BUILT\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, 39.38 in. wide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAsphalt-saturated felt underlayment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProfile \/ style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e#30 metric felt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e39.38 in. wide roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAsphalt-saturated organic felt\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 D 226 Type II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e57 lb per roll\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 underlayment beneath shingle 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\u003eRoll length and square footage per roll are not stated in the available sources; size your job from the manufacturer's printed roll coverage on the packaging. Order rolls by roof area plus overlap allowance.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eUse as an underlayment layer beneath asphalt shingles or other steep-slope coverings, with drip edge and starter products per the roofing manufacturer's installation instructions.\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 roll of TRI-BUILT 39.38 in. wide #30 felt underlayment meeting ASTM D226 Type II.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much area does one roll cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The sources do not state the roll length or coverage; check the roll packaging for printed square footage.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What standard does it meet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e ASTM D 226 Type II, the specification for No. 30 asphalt-saturated organic felt.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Where is it installed?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e On the roof deck beneath the primary roof covering, lapped per the manufacturer's instructions and local code.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How heavy is a roll?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each roll weighs approximately 57 lb.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eNo. 30 felt is the go-to choice when you want a heavier, more tear-resistant underlayment than #15, especially on longer-duration projects. Install with proper head and side laps per the roofing manufacturer and local code, and keep rolls dry before and during installation. For extended exposure periods, consider a synthetic underlayment instead.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFelt underlayment is slippery, especially when wet or dusty; use fall protection and walk carefully on installed rolls.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eGet TRI-BUILT #30 metric ASTM D226 felt underlayment rolls for a dependable layer under your shingles.\u003c\/strong\u003e\u003c\/p\u003e","brand":"TRI-BUILT","offers":[{"title":"Default Title","offer_id":53529508446575,"sku":"TRIGMC30F226M","price":40.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/560142_default_hero.jpg?v=1790350620","url":"https:\/\/superarbor.io\/products\/tri-built-trigmc30f226m-tri-built-39-38-in-x-30-astm-d226-type-ii-asphalt-felt-underlayment-roll-metric","provider":"Super Arbor","version":"1.0","type":"link"}