{"product_id":"generic-30-astm-d226-asphalt-saturated-organic-felt-underlayment-36-in-2-square-roll","title":"Generic 30# ASTM D226 Asphalt Saturated Organic Felt Underlayment, 36 in. 2 Square Roll","description":"\u003ch1\u003eGeneric 30# ASTM D226 Asphalt Saturated Organic Felt Underlayment, 36 in. 2 Square Roll\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis 30# asphalt-saturated felt underlayment meets ASTM D226 and comes on a 36 in. roll covering 2 squares. It provides a waterproofed separator layer beneath shingles on residential roofs. One roll is included per order.\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 meet ASTM D226, the standard for asphalt-saturated organic felt underlayment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30 lb Weight:\u003c\/strong\u003e 30# grade is heavier and thicker than 15# felt for added durability under shingles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 Squares per Roll:\u003c\/strong\u003e Each 36 in. roll covers approximately 2 squares (200 sq ft) of roof deck.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsphalt Saturated:\u003c\/strong\u003e Felt sheet saturated in waterproofing agent to shed moisture beneath the roofing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Roll Size:\u003c\/strong\u003e 36 in. width fits standard residential shingle coursing.\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\u003eGeneric\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, 36 in., 2 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\u003e30# Asphalt Saturated Felt, ASTM D226\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 felt (organic felt sheet with waterproofing saturation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36 in. wide roll, 2 squares per roll\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\u003e2 squares (approximately 200 sq ft) per roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM D226\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36 in. x 2 square roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36 in. 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\u003eRoofing underlayment beneath shingles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eResidential Roofing\/Underlayment\/Felt Underlayment\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 36 in. roll covers about 2 squares (200 sq ft) of roof deck; divide total roof area by 200 to size the job and add laps per the ASTM D226 installation practice, typically 2 in. end laps and 4 in. side laps.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eUsed as a shingle underlayment on steep-slope residential roofs and installed beneath asphalt shingles; pair with drip edge and starter products from the same roofing package. Fasteners or cap nails are not included.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is included in one order?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One 36 in. roll of 30# ASTM D226 asphalt-saturated felt, covering about 2 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 One roll covers about 200 sq ft, so divide your roof area by 200 and add rolls for laps and waste.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What does 30# mean?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The number originally referred to the weight of 100 sq ft of the paper; 30# felt is thicker and heavier than 15# felt.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it meet a standard?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, it meets ASTM D226 for asphalt-saturated felt.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it installed?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Roll it horizontally up the deck with lapped courses before shingle installation; follow standard lap practices for the roof slope.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eThirty-pound felt is the right pick when the deck will be exposed for more than a day or two before shingling, since it is more tear-resistant than 15#. Lap courses shingle-style, start at the eave, and use cap nails or tabs to hold it in wind. On steeper or shorter-duration projects, synthetic underlayments are an alternative, but this ASTM D226 felt remains the code-familiar choice for standard residential work.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFelt becomes slippery when wet or dusty, so walk on it carefully and wear fall protection when working on the roof.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder 30# ASTM D226 asphalt felt underlayment in 36 in., 2-square rolls for your next roof.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":53523963085167,"sku":"GMC30FD226","price":41.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/ProductImage_GMC30D226SPEC.jpg?v=1790269926","url":"https:\/\/superarbor.io\/products\/generic-30-astm-d226-asphalt-saturated-organic-felt-underlayment-36-in-2-square-roll","provider":"Super Arbor","version":"1.0","type":"link"}