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.
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.
When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof.
We at roof life of oregon can make sure your dead valleys don t become a problem.
Clear any debris in the roof valley and surrounding area.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
In the actual dead valley fold it in but do not make any cuts.
In some cases pro roofing will need to replace part or all of the siding.
The three methods to shingle a roof valley.
Metal pans can solve the problem on many roof types.
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.
The pvc dead valley will need to be installed up under the siding.
Iko recommends that you install architectural shingles with the open valley method for the best roof performance.
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.
A dead valley is created when two sections of the roof meet at their downhill edges causing a low slope of roofing section that must accommodate a large amount of water.
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.
Water naturally runs downhill.
In those instances flashing will need to be cut into the brick.
Move to the highest end of the valley and work your way down cleaning shingles from both sides of the valley whether they re damaged or not.
Add leaves twigs and other debris that all hold water and you have the recipe for an expensive roof repair.
This recommendation includes iko s premium shingles.
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.
With metal roofs dead valleys are usually made more efficient with different types of membranes or other roofing materials.
That membrane goes down on the plywood and keeps water from trafficking back into the home.
It usually runs down the slope of your roof into the gutters and away from the home.
