How to Patch Leaks in Roof Flashing

What You'll Need
New Kickout Flashing
Roofing Cement
Masonry Caulk

Your roof flashing acts as the first line of defense when it comes to moisture complications. Roofs are designed in a way that water flows into the gutters and down to the ground, but when you have roofs that are adjunct to any vertical structure, water has the tendency to travel through the wall and not into the gutters. Moisture can build up inside your home and not just destroy your house, but also become a breeding ground for pesky microorganisms. This is why you need to install flashings and keep them in tiptop shape.

Step 1 – Deal with Small Holes

The first thing that you’ve got to do is to roughen the area around the hole. To do so, you need a piece of sandpaper or a wire brush to clean the area round the hole. When you’re done priming the torn flashing, you can measure the hole in piece of aluminum flashing that you have and then cut the flashing so that it is larger than the hole. Secure the flashing into the hole with the use of roofing cement. Be generous with the rubber cement. Continue placing rubber cement on top of the patched up hole.

Step 2 – Deal with Leaks Due to Corroded Flashings

Because your kickout flashings are made of metal, there’s always going to be a possibility that the flashings will deteriorate and corrode through time. In order for you repair leaks that are caused by rusty flashings, you will have to take out the entire flashing. This means that you’ll have to remove the shingle attached to the flashing as well. To do so, first remove the nails that secure the shingles. You can use a crowbar for this. Once the nails are removed, you can go on to remove the shingle easily and then the flashing. Simply replace the area that you’ve removed the flashing with a new shingle by nailing and a new kickout flashing with the use of roofing cement.

Step 3 – Deal with Leaks Due to Unsecured Edges of Flashings

Sometimes, the edges of the flashings actually deteriorate and open up through time, which allows water inside the wall. In order to remedy this problem, you need to re-seal the seams. Just chip out the old mortar and replace them with new masonry caulk.

Step 4 – Deal with Leaks Due to Improperly Nailed Flashings

Because your flashings are attached to roof shingles, there is a possibility that the leak can occur because of the corrosion that happens in your roof shingles. What you have to do is place roofing cement on the nail heads to prevent them for getting rusted through time. Remember that rust will cause holes to form, and holes let water and moisture in.