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Drip edge flashing1/7/2023 ![]() What I wish I knew is what led you to search for this term (you can leave a comment below) so that I can provide even more relevant information. We're thrilled to get so many visitors searching for drip edge. Notice how invisible the flashing is once the siding has been installed. ![]() Here is a vacation home getting new siding plus new flashing to prevent water from getting into the house. ![]() Understand that there are many different types of flashing on a roof, and each has different installation rules to make your home watertight. The building codes state that roofing shingles can be flush with the outer edge of your drip edge flashing, unless the shingle manufacturer specifies something different. On the gables, it goes over the underlayment.On the eaves, the roof underlayment goes over the drip edge.Where the drip edge is installed is very important:.Each piece of drip edge must be fastened to the roof deck at a maximum of 12 inches (305 mm) apart.The metal must extend a minimum of 0.25 inch (6.4 mm) beyond the roof sheathing and extend up the roof deck a minimum of 2 inches (51 mm).Adjacent pieces must be overlapped a minimum of 2 inches (51 mm).One of my handyman technicians made a roofer re-install the drip edge once, because they used small, leftover pieces leaving too many seams vulnerable to leaks. It comes in 10 foot lengths, and several colors ( see what Lowe's sells) to match your roof's shingles. If it doesn't look right to you, ask your roofer to explain how it's installed. A benefit of drip edge being added to the building codes was documentation on the standards.
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