How To Repair Different Types Of Roof Flashing Damage

Posted on: 16 January 2019

If you have an asphalt shingle roof on your business, as many people do in the United States, then you need to make sure that your roof is protected from leaks. The flashing that is installed can greatly reduce the amount of water that can work its way underneath the shingles; however, the flashing can be damaged. Keep reading to learn about a few types of damage and how they can be repaired.

Pinhole Leaks

Pinhole leaks and tears in your flashing can occur due to ice, hail damage, and issues that involve falling branches and other kinds of debris. If the damage is minor or minimal -- if it is less than one-quarter to one-half inch in size -- then it can be repaired.

To repair smaller types of damage, you want to use either a small amount of roofing cement or a patch. Roofing cement is ideal if you notice an opening or hole that is smaller than a dime. The cement is either an asphalt- or petroleum-based product or it is a rubberized compound that seals the opening.

Most roofing cement products are quite thick, so they should be applied with either a putty knife or a trowel. You want to clean the damaged area first with soap and water or an all purpose cleaner. Dry the area completely, spread a small amount of cement on the opening, and spread out the material so it creates a thin coating. Most cement products suggest a coating that is no more than one-eighth of an inch thick.

If the thin coating does not fully cover the opening, then allow the first coat to dry for about 12 hours before adding another one.

Larger Holes

Bigger holes or tears should be repaired with the use of a patch. You can use either a fiberglass patch material or you can cut a small piece of flashing to fix the area. The patch can be added with cement both underneath and above the edges of the patch.

Before you begin, you want to make sure that the flashing is flush with the roof. Use a rubber mallet to gently bend it back into place if it is sticking up. You then want to clean the damaged area and use either a piece of fine-grit sandpaper or a wire brush to gently roughen the area.

Cut your patch slightly bigger than the opening and then squeeze a small bead of roofing cement around the edge of the hole. Press the patch in place and then smooth some roofing cement over the edges of the patch to make sure it is flush with the roof.

For more information about repairing and maintaining the roof over your business, contact your local commercial roofing services today.