In a dead valley there is nowhere for the water to go and the water can collect and drain very slowly.
Solutions for dead valleys on roof.
With metal roofs dead valleys are usually made more efficient with different types of membranes or other roofing materials.
The pvc dead valley will need to be installed up under the siding.
The three methods to shingle a roof valley.
When finished the dead valley will be able to have standing water in it and it will not leak.
Clear any debris in the roof valley and surrounding area.
Metal pans can solve the problem on many roof types.
When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof.
At the bare minimum we ll want to remove those shingles and put a product down called ice and water which is a sticky membrane.
Iko recommends that you install architectural shingles with the open valley method for the best roof performance.
Add leaves twigs and other debris that all hold water and you have the recipe for an expensive roof repair.
In the actual dead valley fold it in but do not make any cuts.
That membrane goes down on the plywood and keeps water from trafficking back into the home.
This recommendation includes iko s premium shingles.
Open valleys on the other hand leave the metal exposed which may be more pleasing to the eye especially if copper is used as the valley lining.
In some cases pro roofing will need to replace part or all of the siding.
We at roof life of oregon can make sure your dead valleys don t become a problem.
Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary.
Fold around the codrners and overlap by at least 6 each side 12 total overlap.
It usually runs down the slope of your roof into the gutters and away from the home.
In those instances flashing will need to be cut into the brick.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
It is important to remember that a closed valley conceals the valley lining and allows the planes of the roof to blend together.
If the ice and water shield is missing then you will have to remove the shingles on both sides along the valley put ice and water shield in place and re shingle the roof.
Water naturally runs downhill.
Start from the very bottom and work your way up with putting the membrane to the roof at least 24 away from the wall and at least 8 up the wall.
