![]() ![]() Roofing cement has a much shorter useful life than the replacement roofing materials (new shingles or flashing material, for instance) that a professional roofer would use to repair a roof leak. Using roof cement is usually not the best way to go about making permanent roof repairs. These products will be identified as being “wet/dry” or “all weather” roofing cement. You can use many roof cement products to plug active leaks even when it’s raining. You find the hole, fill the hole, and you’re done. Roofing cement is the perfect material for a quick, temporary fix. Emergency roof repairs are the immediate actions you take to stop a roof leak or potential roof leak with temporary measures until you have the time to make proper permanent repairs (or hire someone to make permanent repairs). What is Roof Cement Used For? Emergency Roof Leak Repairs In general, roofing cement will typically take about 6 to 12 hours to feel dry and start forming a hard skin, and up to 30 days to fully cure. How long roof cement takes to cure depends on the product, the weather (humidity slows the process), and how thick the application is. Once all the solvent is gone, the roofing cement becomes quite hard. Once it’s applied to the roof and exposed to the air, the solvent which keeps it soft begins to migrate out of the asphalt and evaporate into the air. Roof cement remains soft, plastic, and workable so long as it remains in its container with an airtight seal. ![]() Another 5% to 10% worth of cellulose or fiberglass fibers is almost always present as well. Roof cement may contain other additives that enhance its performance.Īt its most basic, roofing cement in the container contains around 40% to 60% asphalt, 20% to 30% solvent, and 10% to 20% inert mineral fillers. Roofing cement is a mixture of cutback asphalt (asphalt which has been thinned with a petroleum-based solvent) and mineral stabilizers, formulated to have a consistency that makes it easy to apply with a trowel or caulk gun. Roof cement is also known as roofing cement, flashing cement, plastic roof cement, roof mastic, pookie, and goop. It can also be applied with a caulk gun when it comes in a tube.Ĭompatible roofing materials include asphalt shingles, concrete tile and other masonry, and metal, among others. Roof cement can be easily applied and worked with a trowel or putty knife. Roof cement is a black, sticky, highly viscous, asphalt-based material most often used to make roof repairs. We know roof cement pretty well, and we thought we would share some helpful information about roof cement here on our website. This has given us a pretty good idea as to how different brands of roof cement perform. Inspecting all of these roofs every year has allowed us to track the performance of roof patches as time goes by. We’ve made thousands of repairs and gone through thousands of gallons of roof cement from various manufacturers. We’ve managed proactive maintenance programs and been responsible for millions of square feet worth of roofing. Our clients include homeowners associations, corporate real estate asset managers, property managers, and facility directors.Īs a part of our job, we research and specify the materials for roof repairs, choosing the best roofing products to use on our clients’ roofs based on how the materials perform and how much they cost. We’re professional roof consultants – professional roof experts, you might say.
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