How To Seal A Roof Valley

Check that the roofing material is cut in a straight smooth line on each side.

How to seal a roof valley.

Roof one side of the valley running the shingles across it. To secure the roof valley flashing nail it down carefully. In order to lay the flashing the shingles on the roof will have to be removed. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

Shingle the other side of the valley the same way. Only nail at the edges with only enough nails to. Ensure ice and water protector has been installed along the valley first. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

Then starting at the base of the. This video shows the traditional and best way to repair a lead valley on a roof. To seal make sure there is no debris in the valley. Stop nailing 6 inches from the center.

Once the roof valley has begun to leak you will need to cover the valley with flashing in order to prevent a repeat of the problem. The distance between the shingles should widen from the ridge to the eave at 1 8 inch per foot of valley. Step 2 remove the 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.

Check the entire roof valley carefully to locate the source of these problems.