Roof Valley Problems

Check for cracked housings on plastic roof vents and broken seams on metal ones.

Roof valley problems.

As the asphalt shingles are installed over the roof deck the shingles are extended into the valley. They can also buckle if they were not adequately ventilated during installation. Also look for pulled or missing nails at the base s bottom edge. When the valley gets blocked with leaves and debris it can affect your roof and a large amount of water could end up in your roof cavity.

Here are some of the most common problems with roof valleys along with solutions to help you fix leaks or stop them before they start. When leaks crop up around roof valleys the problem is often with the underlayment. Most roofers that do shingles will use a heavy base paper instead of a rubber membrane. Most roofers that install shingles will not have rubber membranes with them to do such areas.

Replacement of lead in a valley. Roof valleys take more abuse in the form of rain snow ice and debris than any other part of the roof. A roof valley is the v shaped channels that run up and down the folds of your roof. There s really no fix other than replacing the damaged vents.

Make sure your roofers install your roofing system properly to avoid these valley problems. Shingles roof systems offer great protection but are prone to discoloration and curling. Replace them with rubber washered screws. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.

Damaged lead in the valley however can be a bigger issue. Most shingle installers will use a thick 30 lb paper as a base for the valley. If you have a roof valley in your home then you may find that your lead valley starts to leak or even to allow water to run onto the ceiling of the floor below. If you find that this is a problem then you will need to repair your roof valley before anything serious happens such as plaster loss or even major water damage.

Care notes abuse of the finished roof as one of the nine most common problems plaguing single ply systems stating heavy construction traffic can cause scrapes cuts in the membrane and damage to the underlying substrate. To avoid this contact a professional roofing contractor who can fix this issue for you. A blocked valley can cause water overflow a problem that can be addressed easily by clearing the debris. Any cracked lead work will need to be replaced although a temporary fix can be carried out with self adhesive flashing tape.

You may encounter defective valley lined shingles installation failed roll roofing valley liners or a cross wash where water running down a roof slope flows across the valley and up beneath the shingles on the adjacent slope. In addition it is important to avoid nailing the shingles through the valley metal. In addition to leaks this can cause premature problems with the roof membrane and may void the guarantee.