{"title":"Underlayment \u0026 Flashing","description":null,"products":[{"product_id":"no-15-felt-paper-roofing-underlayment-fp15","title":"No. 15 Felt Paper Roofing Underlayment","description":"\u003cp\u003eNo. 15 asphalt-saturated felt is the traditional organic or fiberglass mat sheet saturated with asphalt and supplied in rolls. It is installed over a roof deck ahead of shingles as a secondary water-shedding layer and a separation sheet between the deck and the finish roofing.\u003c\/p\u003e\n\u003cp\u003eThe sheet is rolled out horizontally from the eave up, lapped shingle-fashion so water runs over each seam, and fastened with roofing nails, cap nails or staples depending on the deck and local practice. The lighter No. 15 weight is the common choice under asphalt shingle work, where No. 30 is reserved for heavier or steeper assemblies.\u003c\/p\u003e\n\u003cp\u003eBeyond roofing, felt paper is widely used as a slip sheet and a weather-resistive layer behind siding, stucco lath and masonry veneer, and as a temporary dry-in while a building is being closed up.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAsphalt-saturated felt sheet supplied in rolls for continuous coverage\u003c\/li\u003e\n\u003cli\u003eNo. 15 weight, the lighter of the two standard roofing felt classes\u003c\/li\u003e\n\u003cli\u003eSheds water as a secondary barrier beneath shingles and other finish roofing\u003c\/li\u003e\n\u003cli\u003eCuts with a utility knife and tears cleanly at the fastener line if overdriven\u003c\/li\u003e\n\u003cli\u003eFastens with roofing nails, cap nails or staples over wood decking\u003c\/li\u003e\n\u003cli\u003eActs as a separation layer between the deck and the roof covering\u003c\/li\u003e\n\u003cli\u003eLays flat and conforms over valleys, hips and minor deck irregularities\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShingle underlayment on sloped wood-decked roofs\u003c\/li\u003e\n\u003cli\u003eTemporary dry-in of a roof deck during construction\u003c\/li\u003e\n\u003cli\u003eWeather-resistive layer behind wood, fiber cement or vinyl siding\u003c\/li\u003e\n\u003cli\u003eBacking behind stucco lath and masonry veneer walls\u003c\/li\u003e\n\u003cli\u003eSlip sheet between dissimilar materials\u003c\/li\u003e\n\u003cli\u003ePatch and repair work on existing shingle roofs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Roofing felt underlayment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight Class:\u003c\/strong\u003e No. 15\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Asphalt-saturated felt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Roll\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Roof decks, wall sheathing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARCH Building Supply","offers":[{"title":"Default Title","offer_id":55048724316499,"sku":"FP15","price":27.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/arch-placeholder-coming-soon_48989af7-f5e0-49ca-9e4a-2c648803979e.webp?v=1790259797"},{"product_id":"no-30-roofing-felt-paper-fp30","title":"No. 30 Roofing Felt Paper","description":"\u003cp\u003eNo. 30 felt paper is an asphalt-saturated organic or fiberglass mat underlayment used beneath shingles, slate, tile and metal roofing. The heavier No. 30 weight is stiffer and more tear-resistant than No. 15, so it holds up better to foot traffic during installation and to longer exposure while a roof is being dried in.\u003c\/p\u003e\n\u003cp\u003eRolls are laid horizontally from the eave up, lapped so water runs over each course, and fastened with roofing nails or cap nails. Once covered, the felt acts as a secondary water shedding layer and separates the roofing material from the deck.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo. 30 weight asphalt-saturated felt, heavier and more puncture resistant than No. 15\u003c\/li\u003e\n\u003cli\u003eServes as a secondary water-shedding layer under shingles and other steep-slope roofing\u003c\/li\u003e\n\u003cli\u003eSeparates roofing material from the wood deck, reducing resin staining and telegraphing of deck irregularities\u003c\/li\u003e\n\u003cli\u003eLays flat and holds fasteners well, allowing installation with roofing nails or cap nails\u003c\/li\u003e\n\u003cli\u003eLapped courses run parallel to the eave so water is shed over each successive layer\u003c\/li\u003e\n\u003cli\u003eSupplied in a roll for continuous coverage across the deck\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnderlayment beneath asphalt shingle roofing\u003c\/li\u003e\n\u003cli\u003eUnderlayment for slate, tile and metal steep-slope roofing\u003c\/li\u003e\n\u003cli\u003eTemporary dry-in of a new or re-roofed deck\u003c\/li\u003e\n\u003cli\u003eReroofing over stripped sheathing\u003c\/li\u003e\n\u003cli\u003eSlip sheet and separation layer over wood roof decks\u003c\/li\u003e\n\u003cli\u003eSheathing paper on wall and deck assemblies where a felt layer is specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Roofing Felt Underlayment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight Class:\u003c\/strong\u003e No. 30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Asphalt-saturated felt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Steep-slope roofing underlayment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold By:\u003c\/strong\u003e Roll\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARCH Building Supply","offers":[{"title":"Default Title","offer_id":55048724349267,"sku":"FP30","price":27.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/arch-placeholder-coming-soon_a88f4668-1802-47f5-96bf-1b1e8ae7c565.webp?v=1790259797"},{"product_id":"200-sq-ft-ice-and-water-barrier-roof-underlayment-roll-wip","title":"200 sq. ft. Ice and Water Barrier Roof Underlayment Roll","description":"\u003cp\u003eSelf-adhering ice and water barrier used as a leak-protection underlayment beneath shingles, metal and other steep-slope roof coverings. The sheet is a rubberized asphalt membrane laminated to a slip-resistant top surface, with a release liner on the adhesive face that is peeled back as the roll is set into place.\u003c\/p\u003e\n\u003cp\u003eBecause the adhesive bonds directly to the deck and seals around driven fasteners, the membrane keeps water that backs up behind an ice dam or is driven by wind from reaching the sheathing. It is normally applied at the eaves, in valleys and around penetrations first, with the remaining field of the roof covered by conventional felt or synthetic underlayment.\u003c\/p\u003e\n\u003cp\u003eSupplied as a single roll covering 200 square feet of deck before laps.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelf-adhered rubberized asphalt membrane that bonds to the roof deck without fasteners or torching\u003c\/li\u003e\n\u003cli\u003eSeals around nails and staples driven through it, resisting water entry at fastener penetrations\u003c\/li\u003e\n\u003cli\u003eSplit or full release liner peels away for controlled positioning during application\u003c\/li\u003e\n\u003cli\u003eSkid-resistant top surface for footing during installation\u003c\/li\u003e\n\u003cli\u003eLaps to itself at side and end seams to form a continuous watertight layer\u003c\/li\u003e\n\u003cli\u003eRoll covers 200 square feet of deck area\u003c\/li\u003e\n\u003cli\u003eCompatible with asphalt shingle, metal and other steep-slope roof coverings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEave and gutter-line protection against ice dam backup\u003c\/li\u003e\n\u003cli\u003eOpen and closed roof valleys\u003c\/li\u003e\n\u003cli\u003eAround chimneys, skylights, vents and other roof penetrations\u003c\/li\u003e\n\u003cli\u003eRakes, ridges and hips on steep-slope roofs\u003c\/li\u003e\n\u003cli\u003eLow-slope roof sections and porch or dormer tie-ins\u003c\/li\u003e\n\u003cli\u003eWall-to-roof transitions and step flashing areas\u003c\/li\u003e\n\u003cli\u003eFull-deck coverage on re-roofs in severe weather exposures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Self-adhered ice and water barrier underlayment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubberized asphalt membrane with release liner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoverage:\u003c\/strong\u003e 200 sq. ft. per roll\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Steep-slope roof decks, under shingles and metal roofing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit:\u003c\/strong\u003e Roll\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARCH Building Supply","offers":[{"title":"Default Title","offer_id":55048747057491,"sku":"WIP","price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/arch-placeholder-coming-soon_fdb6680a-1b81-4c90-ab3b-28fa000817f3.webp?v=1790259905"},{"product_id":"protecto-wrap-super-stick-building-tape-12-in-x-75-ft","title":"Protecto Wrap Super Stick Building Tape, 12 in. x 75 ft.","description":"\u003cp\u003eA self-adhering flashing tape for windows, doors and joints in exterior sheathing, on a 12 in. x 75 ft. roll.\u003c\/p\u003e\n\u003cp\u003eThe roll states that no fasteners or primer are required, that it does not contain rubberized asphalt, and that it adheres in extreme weather down to -20 F (-28 C).\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo fasteners or primer required\u003c\/li\u003e\n\u003cli\u003eDoes not contain rubberized asphalt\u003c\/li\u003e\n\u003cli\u003eAdheres in extreme weather down to -20 F (-28 C)\u003c\/li\u003e\n\u003cli\u003e12 in. (30.48 cm) x 75 ft. (22.86 m) roll\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eProtecto Wrap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eSuper Stick Building Tape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e12 in. (30.48 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLength\u003c\/th\u003e\n\u003ctd\u003e75 ft. (22.86 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUse\u003c\/th\u003e\n\u003ctd\u003eFlashing for windows, doors and joints in exterior sheathing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Protecto Wrap","offers":[{"title":"Default Title","offer_id":55097733054803,"sku":"WD12","price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/protecto-wrap-super-stick-building-tape-12-in-x-75-ft.webp?v=1790652692"},{"product_id":"protecto-wrap-super-stick-building-tape-9-in-x-75-ft","title":"Protecto Wrap Super Stick Building Tape, 9 in. x 75 ft.","description":"\u003cp\u003eA self-adhering flashing tape for windows, doors and joints in exterior sheathing, on a 9 in. x 75 ft. roll.\u003c\/p\u003e\n\u003cp\u003eThe roll states that no fasteners or primer are required, that it does not contain rubberized asphalt, and that it adheres in extreme weather down to -20 F (-28 C).\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo fasteners or primer required\u003c\/li\u003e\n\u003cli\u003eDoes not contain rubberized asphalt\u003c\/li\u003e\n\u003cli\u003eAdheres in extreme weather down to -20 F (-28 C)\u003c\/li\u003e\n\u003cli\u003e9 in. (22.86 cm) x 75 ft. (22.86 m) roll\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eProtecto Wrap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eSuper Stick Building Tape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e9 in. (22.86 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLength\u003c\/th\u003e\n\u003ctd\u003e75 ft. (22.86 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUse\u003c\/th\u003e\n\u003ctd\u003eFlashing for windows, doors and joints in exterior sheathing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Protecto Wrap","offers":[{"title":"Default Title","offer_id":55097733087571,"sku":"WD9","price":48.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/protecto-wrap-super-stick-building-tape-9-in-x-75-ft.webp?v=1790652693"},{"product_id":"protecto-wrap-super-stick-building-tape-4-in-x-75-ft","title":"Protecto Wrap Super Stick Building Tape, 4 in. x 75 ft.","description":"\u003cp\u003eA self-adhering flashing tape for windows, doors and joints in exterior sheathing, on a 4 in. x 75 ft. roll.\u003c\/p\u003e\n\u003cp\u003eThe roll states that no fasteners or primer are required, that it does not contain rubberized asphalt, and that it adheres in extreme weather down to -20 F (-28 C).\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo fasteners or primer required\u003c\/li\u003e\n\u003cli\u003eDoes not contain rubberized asphalt\u003c\/li\u003e\n\u003cli\u003eAdheres in extreme weather down to -20 F (-28 C)\u003c\/li\u003e\n\u003cli\u003e4 in. (10.16 cm) x 75 ft. (22.86 m) roll\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eProtecto Wrap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eSuper Stick Building Tape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e4 in. (10.16 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLength\u003c\/th\u003e\n\u003ctd\u003e75 ft. (22.86 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUse\u003c\/th\u003e\n\u003ctd\u003eFlashing for windows, doors and joints in exterior sheathing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Protecto Wrap","offers":[{"title":"Default Title","offer_id":55097733120339,"sku":"WD4","price":21.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/protecto-wrap-super-stick-building-tape-4-in-x-75-ft.webp?v=1790652695"},{"product_id":"4-in-x-4-in-x-8-in-step-flashing-49821687083","title":"4 in. x 4 in. x 8 in. Step Flashing","description":"\u003cp\u003eStep flashing is the piece that keeps water out where a sloped roof runs into a vertical wall. Each piece is pre-bent to a right angle so one leg lies on the roof deck and the other turns up the wall, and the pieces are installed one per shingle course rather than as a continuous strip.\u003c\/p\u003e\n\u003cp\u003eBecause each piece laps the one below it, the assembly drains like the shingles themselves: water running down the wall is carried onto the top of the shingle course below and off the roof, instead of tracking behind the siding and into the sheathing. It is fastened high on the roof leg with a single nail so the fastener sits under the next course, and the wall leg is left free to be covered by housewrap, siding or counterflashing.\u003c\/p\u003e\n\u003cp\u003eSold as individual pieces, so quantities are figured from the length of the wall intersection and the shingle exposure being used.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePre-bent to a 90-degree angle, giving a roof leg and a wall leg ready to install without field forming\u003c\/li\u003e\n\u003cli\u003eInstalled one piece per shingle course and woven into the courses as the roof is laid\u003c\/li\u003e\n\u003cli\u003eOverlapping pieces create a shingled drainage path that sheds water onto the course below\u003c\/li\u003e\n\u003cli\u003eNailed high on the roof leg so the fastener is covered by the next shingle course\u003c\/li\u003e\n\u003cli\u003eWall leg is concealed by siding, housewrap or counterflashing once the wall is finished\u003c\/li\u003e\n\u003cli\u003eSold by the piece for counting against wall length and shingle exposure\u003c\/li\u003e\n\u003cli\u003eRigid enough to hold its bend during handling, and can be opened or closed slightly to match roof pitch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoof-to-wall intersections on asphalt shingle roofs\u003c\/li\u003e\n\u003cli\u003eDormer sidewalls where the roof plane meets the dormer cheek\u003c\/li\u003e\n\u003cli\u003eSides of chimneys, ahead of counterflashing\u003c\/li\u003e\n\u003cli\u003eSkylight and roof curb sidewalls\u003c\/li\u003e\n\u003cli\u003eSidewall abutments at porch, shed and addition roofs\u003c\/li\u003e\n\u003cli\u003eReroofing and flashing repairs where existing step flashing is corroded or reused improperly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Roof Flashing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlashing Type:\u003c\/strong\u003e Step Flashing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e Pre-bent right angle (L-shaped)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Method:\u003c\/strong\u003e Interlaced one piece per shingle course\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical Use:\u003c\/strong\u003e Roof-to-wall and sidewall intersections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold By:\u003c\/strong\u003e Piece\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSize\u003c\/th\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ARCH Building Supply","offers":[{"title":"Default Title","offer_id":55112690630995,"sku":"49821687083","price":1.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/4-in-x-4-in-x-8-in-step-flashing-49821687083.webp?v=1790734467"},{"product_id":"4-in-aluminum-roof-flashing-af4","title":"4 in. Aluminum Roof Flashing","description":"\u003cp\u003eAluminum flashing is thin, formable sheet metal used to close the joints where a roof meets a wall, a chimney, a valley or a penetration, directing water back onto the roof covering instead of into the structure below. Aluminum is soft enough to be bent, cut and dressed with hand tools on site, and it forms a self-limiting oxide layer that keeps it from rusting the way uncoated steel does.\u003c\/p\u003e\n\u003cp\u003eThis 4 in. width is a common size for step flashing, roll flashing and repair pieces, where a narrow leg is worked under shingles or siding and the balance is turned up against the adjoining surface. It is cut with tin snips and fastened or bonded with roofing cement or sealant, depending on the detail.\u003c\/p\u003e\n\u003cp\u003eAluminum should be kept away from direct contact with fresh masonry, mortar and pressure-treated lumber, and separated from copper, since alkaline materials and dissimilar metals promote corrosion.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFormed from aluminum sheet, which resists rust and does not require painting for corrosion protection\u003c\/li\u003e\n\u003cli\u003eSoft enough to be cut with snips and bent or dressed to the roof detail by hand on site\u003c\/li\u003e\n\u003cli\u003e4 in. nominal width suited to step, wall and penetration flashing details\u003c\/li\u003e\n\u003cli\u003eLightweight compared with steel or copper flashing of the same gauge, easing handling on a roof\u003c\/li\u003e\n\u003cli\u003eCompatible with asphalt shingle, roll roofing and most siding assemblies\u003c\/li\u003e\n\u003cli\u003eCan be bedded in roofing cement or sealant and fastened with compatible nails\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStep flashing where a sloped roof meets a vertical wall\u003c\/li\u003e\n\u003cli\u003eHeadwall and sidewall flashing on dormers and additions\u003c\/li\u003e\n\u003cli\u003eFlashing around chimneys, skylights and roof penetrations\u003c\/li\u003e\n\u003cli\u003eValley and transition repairs on shingle roofs\u003c\/li\u003e\n\u003cli\u003eCounterflashing and patch work on existing roofs\u003c\/li\u003e\n\u003cli\u003eDrip and edge detailing at eaves and rakes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Roof Flashing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Width:\u003c\/strong\u003e 4 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold By:\u003c\/strong\u003e Each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSize\u003c\/th\u003e\n\u003ctd\u003e4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ARCH Building Supply","offers":[{"title":"Default Title","offer_id":55112696070483,"sku":"AF4","price":13.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/4-in-aluminum-roof-flashing-af4.webp?v=1790734516"},{"product_id":"1-2-in-x-2-3-4-in-x-10-ft-drip-edge-brown-deb","title":"1\/2 in. x 2-3\/4 in. x 10 ft. Drip Edge, Brown","description":"\u003cp\u003eDrip edge is the L-shaped metal flashing installed along the eaves and rakes of a roof to direct runoff away from the fascia and into the gutter. The short vertical leg hangs over the roof edge and kicks water clear of the wood behind it, while the wider flange lies on the deck beneath the underlayment at the rake and over it at the eave, depending on the assembly.\u003c\/p\u003e\n\u003cp\u003eThis profile carries a brown finish, which lets the exposed edge read as trim against brown fascia, soffit and gutter work rather than as bare metal. It is sold in individual lengths and is lapped end to end as the run is built out along the roof perimeter.\u003c\/p\u003e\n\u003cp\u003eWithout drip edge, water tracks back under the shingle course and wets the deck edge and fascia board, which is the usual starting point for rot at the eave.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eL-shaped flashing profile with a roof-deck flange and a downturned lip that directs water away from the fascia\u003c\/li\u003e\n\u003cli\u003eBrown finished face for a consistent appearance with brown fascia, soffit and gutter\u003c\/li\u003e\n\u003cli\u003eSupplied in single lengths that are lapped end to end along eaves and rakes\u003c\/li\u003e\n\u003cli\u003eNailed through the deck flange, then covered by starter course and shingles at the eave\u003c\/li\u003e\n\u003cli\u003eCut and mitered on site with tin snips for corners and returns\u003c\/li\u003e\n\u003cli\u003eShields the exposed edge of the roof sheathing and the top of the fascia board from runoff\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEave edges above gutters on asphalt shingle roofs\u003c\/li\u003e\n\u003cli\u003eRake edges on gable ends\u003c\/li\u003e\n\u003cli\u003eRe-roofing work where the original edge metal is corroded or missing\u003c\/li\u003e\n\u003cli\u003eProtecting exposed sheathing edges on new roof decks\u003c\/li\u003e\n\u003cli\u003eTrimming roof perimeters where brown fascia and gutters are used\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Drip edge flashing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e L-shaped roof edge metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Brown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 10 ft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold As:\u003c\/strong\u003e Each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e1\/2\" x 2-3\/4\" x 10'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBrown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ARCH Building Supply","offers":[{"title":"Default Title","offer_id":55112697446739,"sku":"DEB","price":8.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/1-2-in-x-2-3-4-in-x-10-ft-drip-edge-brown-deb.webp?v=1790734529"},{"product_id":"1-2-in-x-2-3-4-in-x-10-ft-white-drip-edge-dew","title":"1\/2 in. x 2-3\/4 in. x 10 ft. White Drip Edge","description":"\u003cp\u003eDrip edge is the L-shaped metal flashing installed along eaves and rakes to carry runoff clear of the fascia and sheathing edge. The short leg hooks over the roof edge and kicks water outward, while the longer flange lies on the deck beneath the underlayment and shingles.\u003c\/p\u003e\n\u003cp\u003eThis profile is formed with a hemmed outer edge and finished white on the exposed face, so it reads as a clean line against white fascia, soffit or gutter. Sections are nailed through the deck flange along the eaves and lapped end to end as the run continues.\u003c\/p\u003e\n\u003cp\u003eFitted at the eaves it also closes the gap between the deck and the gutter, keeping wind-driven water from getting behind the gutter back and wetting the fascia board.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eL-shaped flashing profile with a roof-deck flange and a downward-turned face leg\u003c\/li\u003e\n\u003cli\u003eWhite finish on the exposed face for a coordinated look with white fascia and gutter\u003c\/li\u003e\n\u003cli\u003eSupplied in 10 ft. lengths for lapped, end-to-end runs along eaves and rakes\u003c\/li\u003e\n\u003cli\u003eNails off through the deck flange and is covered by underlayment or shingles\u003c\/li\u003e\n\u003cli\u003eDirects runoff away from the sheathing edge, fascia and trim\u003c\/li\u003e\n\u003cli\u003eCuts and notches with tin snips for corners, valley terminations and gutter outlets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEave edges of asphalt shingle roofs, installed under the underlayment\u003c\/li\u003e\n\u003cli\u003eRake edges, installed over the underlayment and lapped down-slope\u003c\/li\u003e\n\u003cli\u003eEdge detailing above gutters to keep water off the fascia\u003c\/li\u003e\n\u003cli\u003eRe-roofing work where the existing edge metal is corroded or missing\u003c\/li\u003e\n\u003cli\u003ePorch, shed and addition roofs needing a finished white edge line\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Roof drip edge flashing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e L-shaped edge metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 10 ft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFace Dimensions:\u003c\/strong\u003e 1\/2 in. x 2-3\/4 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold By:\u003c\/strong\u003e Each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e1\/2\" x 2-3\/4\" x 10'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ARCH Building Supply","offers":[{"title":"Default Title","offer_id":55112697512275,"sku":"DEW","price":8.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/1-2-in-x-2-3-4-in-x-10-ft-white-drip-edge-dew.webp?v=1790734530"}],"url":"https:\/\/arch-9365.myshopify.com\/es\/collections\/roofing-underlayment.oembed","provider":"ARCH","version":"1.0","type":"link"}