Flashing is used all over a roof. These vital metal pieces (usually aluminum) are usually installed underneath the roofing material. Of course, most flashing is not visible because it is underneath the tiles or shingles. Even when flashing can't be seen, it can be damaged. The most common flashing problem is that it peels away from the roof structure. If this happens, water that seeps through your roof tiles can penetrate your home and compromise the structural integrity of your roof.
Flashing is installed at the most high-risk points of any roof. For instance, it is always on the crown of a roof (or the top of a slanted roof). It is also in the seams around features sticking out of your roof. Your chimney and vents should all be flashed. The most vulnerable flashing pieces are those where standing water accumulates. The water can penetrate the sides of the flashing, waterlogging the glue and weakening its hold on the flashing. The key to functional and secure flashing it making sure that it is firmly glued down, especially around the edges.
How to Replace Flashing
If your flashing is extremely deteriorated and starting to peel away from your roof, it will actually be easier to remove. However, if the center of your flashing is still secure, you need to decide if you are going to remove it, or just caulk the edges to create a watertight seal. Often removing the whole pieces ends up being easier because the old piece is warped. If your flashing is warped or bent, trying to caulk the edges is just not going to work.
To remove the flashing you can use a putty knife, chisels, or a utility knife. You might need to use all of these tools, or just one of them might get the job done. The trick to successfully replacing the flashing is making sure that the surface it is being glued to is as clean as possible. This means you need to scrape away as much of the old epoxy or glue as possible. This can be the most painstaking part of the entire job. However, it is necessary if you want a long-lasting and durable flashing replacement. Use a heavy duty roofing adhesive to secure your new flashing. Make sure the edges have enough glue to seal them.
Flashing replacement is a cheap and easy job that could save your roof structure. Contact a local roofing company for more information and assistance.