How To Repair Shingle Roof Valleys

Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

How to repair shingle roof valleys.

The valleys on many older houses comprise layers of roofing paper which. Roof valleys are troughs that discard runoff water where two sections of sloped roof meet. High winds sometimes blow shingles away from the roof valley particularly if the edges of the shingles are not nailed in place because of shingle strain described above. Roof one side of the valley running the shingles across it.

Closed cut valley even if i work toward the valley with three tab shingles cut valleys are faster than woven valleys hands down. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Plus cutting the closed cut valley shingles can happen after the rest of the roof is shingled. How to repair valleys on a roof.

In other cases water can become trapped under shingles which have been overlaid to create the valley trough. The roof valley is where two angles of the roof come together and form a valley. In order to shingle this kind of roof valley a roofing professional has to install both roof faces at the same time which is quite slow. Shingle the other side of the valley the same way.

Cut roof valleys also can easily be dislodged because of rain and wind. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. With a closed cut valley there s no need to shingle the two roof planes at the same time. A woven valley shingle installation has other drawbacks including that they are slow to install especially in cold weather and more difficult to repair than the other types.

Stop nailing 6 inches from the center. Though roof valleys are com mon leak sites on shingle roofs it s typically fairly easy to fix these problems with a little know how.