How To Weave Shingles In A Roof Valley

In addition it is important to avoid nailing the shingles through the valley metal. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. 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.

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The woven valley shingle installation method does not call for roofing cement relying instead on the weave pattern to protect from water infiltration.

How to weave shingles in a roof valley.

One layer of shingles actually crosses the valley beneath the other. Asphalt shingles roofing how to install valley by roofrepair101 more about roof installation at. I always weave my first course. For closed cut valleys shingles on one roof plane are installed through a valley and extended at least 30 cm into the intersecting plane.

All of the shingle rows will need to be lined up correctly. From the ground it looks as the shingles meet in a clean line in the center of the valley. California cut valleys make for a great closed cut valley however we have an installation trick to improve performance in areas of high winds snow or rain. 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.

But if the shingles are not laid in the valley properly a woven valley may not lay flat creating bumps and detracting from the overall look of the roof. Water has a small chance of even getting up under the woven valley shingles even though it flows in either direction. Away from the valley center. I nail the shingles normally except that i keep nails at least 6 in.

Here we have a laminated shingle roof that has been installed with a woven valley detail. Woven valleys should only be used with strip shingles. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.

But after that i run the shingles up the valley aligning the top edges with the course lines and the top outside corners with the guide line. Now i m ready for the other roof plane. Pros of woven valley shingle installations.