Pros of woven valley shingle installations.
Roof valley shingle weave.
Weaving a shingle valley by dunn contracting 727 410 5717 james dunn.
Closed valleys or open valleys.
Water has a small chance of even getting up under the woven valley shingles even though it flows in either direction.
Woven valleys should only be used with strip shingles.
This is an incorrect installation of this type of roofing material and will be more prone to water intrusion and will void the manufacturer s warranty for this material.
The woven valley shingle installation method does not call for roofing cement relying instead on the weave pattern to protect from water infiltration.
A woven valley shingle installation is one where the shingles from both sides of the roof valley extend over the valley and weave together overlapping courses alternately.
There are two common methods for completing the flashing of a valley in a shingle roof system.
So if you are installing a woven valley you must push the shingles snugly into the valley while not nailing within six inches of the valley center.
All of the shingle rows will need to be lined up correctly.