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License# 1057764

How Do I Install Flashing On An Existing Roof In Trabuco Highlands?

If you’re considering installing flashing to an existing roof there are some aspects you’ll need to take into consideration. First, you’ll want to make sure that your roofing is in excellent shape and that there are no leaks. Once you’ve confirmed that your roof’s in great condition then you’ll have to determine the area in which you’ll install the flashing. Once you’ve measured the space, you’ll need cut the flashing according to the size and then put it in place using nails or screws.

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Take a look at the area to be illuminated

Measuring the area to be flashed is the first step to install flashing onto an old roof. It is important to know the size of the area that will be flashed, so that you can buy the right quantity of flashing material. Additionally, measuring the size of the area will provide you with more understanding of the structure of your roof and the way in which the flashing will have to be put in.

Cut flashings to the size you need

Begin in cutting off the flashing into size. In the case of a pre-formed pan then you’ll need to cut it so that it can extend 6 inches past the roof’s edge. In the case of roll roofing you’ll need to cut it twice as long as the length that the roofing. Then, cut the flashing in half vertically to create two pieces that are the same length as the width of the roof.

Take off any old shingles and nails

For installing flashing on an existing roof you’ll first need to remove the old shingles and nails. Once that’s done you can then install the new flashing. Make sure that you overlap the new flashing by minimum 2 inches and use corrosion-resistant nails and screws to secure it in place.

Install flashing securely onto the roof

If your home has an roofing system that is in place, you’ll need be extra careful in putting up flashing. It’s the first thing to do is remove any shingles or other materials which might be blocking your path. When the roof is clean then you’ll have to measure and cut the flashing to fit. Make sure you leave plenty for an overlap so that the flashing can be securely attached on the roof. Once the flashing has been put in place, you can put up the new roof shingles or other materials.

Nail flashing held in the right place

1. Check that the surface is clean and free of debris.

2. Measure the area to be covered, then cut the flashing to the desired size.

3. Apply a large amount of adhesive to the back of the flashing.

4. Place the flashing in place and then hold it for a few minutes in order to allow the adhesive to become firm.

5. Nail the flashing in place with roofing nails.

6. Apply a small amount of sealant around the perimeter of the flashing to seal it in position.

Make sure the seams are sealed with roofing cement

After cutting the flashing strips to the desired length, lay them out on the roof so that they are overlapping the joint in the roofing material by at least 2 inches. After you have the flashing set in a straight line, apply a bead of roofing cement to the underside of the overlap. Make use of a putty knife to smooth out the cement and remove any excess.

Apply caulk around the flashing

In order to install flashing on an existing roof, you’ll have to put caulk on the flashing. Start by cleaning any old caulk or debris out of the location. Then, apply a large amount of caulk on the side of the flashing that is below it. Make sure you smooth it so that it’s even and level. After that press the flashing into the desired position, and seal it using more caulk.

Install additional shingles if necessary.

If you are installing flashing on your existing roof, you might need to install additional shingles to provide a solid surface for the flashing to adhere to. Start by removing any loose or damaged shingles, then apply the new shingles into the appropriate spot. Be sure to cover the shingles so that the flashing is completely fully covered.

If you’re thinking of adding flashing to your existing roof There are a few points to consider. First, be sure that you have the right equipment and materials. Second, take your time and ensure that you don’t harm your roof. If you’re not certain about which direction to take, it’s always best to hire an expert. With a little bit of planning and care, you can install flashing on your roof to keep your home in good shape for years to be.

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Our mission at SoCal Green Roofing & Builders is to be your go-to roofing contractor in the Los Angeles area. We provide services throughout the greater Los Angeles area, Orange, San Bernardino, and Ventura Counties.


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