{"product_id":"rust-oleum-301899-fibered-asphalt-roof-cement-1-gallon","title":"Rust-oleum 301899 Fibered Asphalt Roof Cement 1 Gallon","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe RUST-OLEUM 301899 is a fibered, asphalt-based plastic roof cement formulated for creating a strong, flexible seal on low-slope and flat roofing systems. Packaged in a one-gallon container, it applies smoothly without stringing, making it practical for field use in both install and repair scenarios. The fibered composition resists cracking under thermal cycling and weathering. Roofing contractors, general contractors, and experienced DIYers install this product as part of flashing work or exterior masonry sealing on commercial and residential structures.\u003c\/p\u003e\u003cp\u003eThis roof cement is suited for a wide range of roofing and masonry applications. It is designed for installing or repairing roof flashings at valleys, parapet walls, gravel stops, stacks, vents, monitors, and similar transition points. It also seals cracks in exterior foundation and chimney walls. When used in combination with fiberglass, polyester fabric, or roll roofing material, it supports permanent repairs on built-up and modified roofing assemblies.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFibered asphalt formula provides a flexible, crack-resistant seal\u003c\/li\u003e\n\u003cli\u003eSmooth, no-string application speeds up fieldwork\u003c\/li\u003e\n\u003cli\u003eCompatible with fiberglass, polyester fabric, and roll roofing for permanent patches\u003c\/li\u003e\n\u003cli\u003eSeals flashings at valleys, parapet walls, gravel stops, stacks, and vents\u003c\/li\u003e\n\u003cli\u003eSuitable for exterior foundation and chimney wall crack sealing\u003c\/li\u003e\n\u003cli\u003eBlack finish blends with standard asphalt roofing surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with fiberglass mesh, polyester roofing fabric, and roll roofing materials on low-slope and flat residential and commercial roofing assemblies requiring flashing installation or repair.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eLicensed roofing contractors typically apply this product following applicable local building codes and manufacturer surface-preparation requirements. Surfaces should be clean, dry, and free of loose material before application. Apply using a trowel or putty knife; avoid application in freezing temperatures or when rain is imminent. Always work in a well-ventilated area and wear appropriate personal protective equipment when handling asphalt-based products.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContainer Size\u003c\/strong\u003e: 1 gallon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormula Type\u003c\/strong\u003e: Fibered, asphalt-based\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 19.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: RUST-OLEUM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 301899\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RUST-OLEUM","offers":[{"title":"Default Title","offer_id":51525155422514,"sku":"301899","price":47.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/63638fc090984360819ff9a49125ff5d.jpg?v=1785465710","url":"https:\/\/voomisupply.com\/products\/rust-oleum-301899-fibered-asphalt-roof-cement-1-gallon","provider":"Voomi Supply","version":"1.0","type":"link"}