{"product_id":"fontana-paper-mill-fpmmg40-fontana-paper-mill-vulcaseal-g40-fiberglass-modified-tile-metal-roof-underlayment-2-square-ro","title":"Fontana Paper Mill VulcaSeal G40 Fiberglass Modified Tile \u0026 Metal Roof Underlayment - 2 Square Roll","description":"\u003ch1\u003eFontana Paper Mill VulcaSeal G40 Fiberglass Modified Tile \u0026amp; Metal Roof Underlayment - 2 Square Roll\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFontana Paper Mill VulcaSeal G40 is a fiberglass-reinforced modified underlayment for tile and metal roofs, supplied as a 2 square roll covering 216 sq ft. It meets ASTM D6757-02 and ASTM D4601-98 and is listed as a UL Type II Glass Base Sheet. One roll is the sell unit.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiberglass Reinforced:\u003c\/strong\u003e A fiberglass mat gives the sheet dimensional stability and tear resistance under tile and metal roofing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModified Formula:\u003c\/strong\u003e Modified asphalt construction provides a tougher, more weather-resistant layer than standard felts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTile \u0026amp; Metal Rated:\u003c\/strong\u003e Designed specifically as underlayment beneath tile and metal roof systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e216 sq ft Roll:\u003c\/strong\u003e Each 2 square roll covers 216 sq ft, allowing for standard side and end laps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCode Listed:\u003c\/strong\u003e Meets ASTM D6757-02 and ASTM D4601-98; UL Type II Glass Base Sheet; UL ER 18554-01.\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\u003eFontana Paper Mill\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, 2 squares (216 sq 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\u003eVulcaSeal G40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e216 sq ft per roll (2 squares)\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\u003e216 sq ft (2 SQ per roll)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFiberglass-reinforced modified underlayment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM D6757-02; ASTM D4601-98; UL Type II Glass Base Sheet; UL ER 18554-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnderlayment for tile and metal roof systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e83.33 lb. per roll\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 216 sq ft, rated at 2 squares per roll. When laps are included, the net installed area is less than the roll's nominal area, so plan lap allowances per the tile or metal manufacturer's instructions.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eIntended for use under tile and metal roofing systems as a code-listed underlayment layer. Fasten with cap nails such as Grip-Rite Grip-Cap and seal laps per the roof system manufacturer's details; roofing and fasteners sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: How much area does one roll cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each roll is rated at 2 squares, covering 216 sq ft; deduct lap allowances from installed coverage.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What roofs is it designed for?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is a fiberglass modified underlayment made for tile and metal roof systems.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How should it be fastened?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Fasten per the roof system manufacturer's instructions, typically with cap nails spaced to hold the sheet flat.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What standards does it meet?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It meets ASTM D6757-02 and ASTM D4601-98, is a UL Type II Glass Base Sheet, and is listed under UL ER 18554-01.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How heavy is a roll?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The roll weighs approximately 83 lb., so use two people or mechanical handling to move it.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eFor tile and metal roofs, a fiberglass modified sheet like VulcaSeal G40 gives better tear resistance and secondary water protection than organic felts. Run it over the deck with laps shingled so water sheds down-slope, and keep the sheet flat with the specified cap-nail pattern. Confirm the assembly with the covering roof manufacturer's requirements, as warranty approval often depends on the specified underlayment.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eRoll out and fasten underlayment carefully on pitched decks; wear fall protection per OSHA and keep feet clear of the roll edge.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder VulcaSeal G40 fiberglass modified underlayment by Fontana Paper Mill for your next tile or metal roof.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Fontana Paper Mill","offers":[{"title":"Default Title","offer_id":53529506546031,"sku":"FPMMG40","price":62.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/297954_default_hero.jpg?v=1790350547","url":"https:\/\/superarbor.io\/products\/fontana-paper-mill-fpmmg40-fontana-paper-mill-vulcaseal-g40-fiberglass-modified-tile-metal-roof-underlayment-2-square-ro","provider":"Super Arbor","version":"1.0","type":"link"}