A roof valley is the v shaped channels that run up and down the folds of your roof.
Roof valley problems.
Damaged lead in the valley however can be a bigger issue.
Roof valleys take more abuse in the form of rain snow ice and debris than any other part of the roof.
A blocked valley can cause water overflow a problem that can be addressed easily by clearing the debris.
Replace them with rubber washered screws.
In addition it is important to avoid nailing the shingles through the valley metal.
Most shingle installers will use a thick 30 lb paper as a base for the valley.
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.
To avoid this contact a professional roofing contractor who can fix this issue for you.
Valley areas are prone to leak due to the lack of using proper materials.
Make sure your roofers install your roofing system properly to avoid these valley problems.
They can also buckle if they were not adequately ventilated during installation.
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.
In addition to leaks this can cause premature problems with the roof membrane and may void the guarantee.
Also look for pulled or missing nails at the base s bottom edge.
You might be tempted to throw caulk at the problem but that solution won t last long.
Shingles roof systems offer great protection but are prone to discoloration and curling.
Any cracked lead work will need to be replaced although a temporary fix can be carried out with self adhesive flashing tape.
Replacement of lead in a valley.
As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.
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.
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.
Areas of missing or broken shingles can leave underlying wood susceptible to rotting holes and other damage.
However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.
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.
Most roofers that install shingles will not have rubber membranes with them to do such areas.
When leaks crop up around roof valleys the problem is often with the underlayment.
Check for cracked housings on plastic roof vents and broken seams on metal ones.
