If you’re considering installing flashing to an existing roof there are some factors you’ll have to take into consideration. The first is to make sure that the roof is in good condition and there aren’t any leaks. Once you’ve established that the roof is in good repair then you’ll have to determine the area where you’ll install the flashing. After you’ve measured the area, you’ll have to cut the flashing according to the size and then put it in place using nails or screws.
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Determine the area that will be flashed
The measurement of the area to be flashed is a crucial first step of installing flashing on an existing roof. It is important to know the measurements of the area that will be flashed so that you can purchase the correct quantity of flashing material. In addition taking measurements of the area will give you an understanding of the roof structure and the way in which the flashing will be placed.
Cut flashing to size
Begin with cutting your flashing down to size. In the case of a pan that’s already formed it’s just necessary to cut it long enough to extend 6 inches past the edge of the roof. For roll roofs, cut the flashing twice the length of the width that the roofing. Then cut the flashing in half vertically so that you’ll have two pieces with the same length as the roof’s width.
Take off any old shingles and nails
To install flashing on an existing roof you’ll first need to remove any old shingles and nails. Once you’ve done that then you can put in your new flashing. Be sure to cover the flashing with at least 2 inches, and then use corrosion-resistant nails or screws to hold it in position.
Install flashing securely onto the roof
If your home has an existing roof, you’ll need to be careful in putting up flashing. First, eliminate any shingles or other materials that might be blocking the path. When the roof is clean then you’ll have take measurements and then cut your flashing to suit. Make sure that you leave enough of an overlap so that the flashing is secure connected onto the roofing. After the flashing is in place, you can put up the new shingles , or any other materials.
Nail flashing in the right place
1. Make sure that the surface is free of debris.
2. Take a measurement of the area to be covered and cut the flashing according to the area.
3. Apply a generous amount of adhesive to the back of the flashing.
4. Apply the flashing and hold it there for a few minutes in order to let the adhesive set.
5. Fix the flashing using roofing nails.
6. Apply a thin layer of sealant around the outside of the flashing to secure it in place.
Cover the seams using roofing cement
After you have cut the flashing strips to the desired length, lay them on the roof, so they cover the joint in the roofing material by minimum 2 inches. Once you have the flashing set in a straight line, apply a bead of roofing cement on the surface of the overlap. Utilize a putty blade to smooth the cement, and then take off any excess.
Apply caulk to the flashing area.
To install the flashing onto an already-existing roof, you’ll have to put caulk around the flashing. Begin by removing any old caulk and debris out of the location. Then, apply a large amount of caulk to underneath of the flashing. Make sure to smooth it out until it’s level and even. Finally apply the flashing in position and seal it with more caulk.
Install additional shingles if necessary.
If you’re installing flashing on your existing roof, you may need to install additional shingles in order to create a solid surface for the flashing to adhere to. Start by removing damaged or missing shingles. Next, you need to put the new shingles in their place. Be sure to cover the shingles so that the flashing will be completely covered.
If you’re thinking about adding flashing to your existing roof, there are a few things to consider. First, be sure that you have the right equipment and materials. Second, take your time and make sure you don’t harm your roof. If you’re not certain about which direction to take you should employ an expert. With just a little planning and care you can put flashing on your roof to keep your home in great condition for many decades to be.