How To Repair Shingle Roof Valleys

Clear any debris in the roof valley and surrounding area.

How to repair shingle roof valleys.

These instructions should now allow you to repair a leaking roof valley on a roof with woven shingles. Tension also is created in shingles when they are nailed too close to the roof valleys and this stress results in premature wear and cracking causing speedy aging of and failure of the shingles. Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary. Only nail at the edges with only enough nails to.

The roofer can either installed a closed valley or an open valley system. Use two roofing nails per shingle. Start at the lower end of the valley. Roofing nails instead should be a minimum of six to ten inches away from the seam to reduce the pressure on the roofing materials.

There are two predominant ways valley are built in a shingle system. Place the new piece of sheet metal valley flashing in the valley with the raised center aligned with the center of. Ensure ice and water protector has been installed along the valley first. To secure the roof valley flashing nail it down carefully.

Follow these three preparatory steps to get ready to fix the valley leak. Cut each side of the flashing at the lower end to conform with the corresponding edges of the roof using sheet metal. Make sure you duplicate the weave pattern of the existing roof. 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.

Replace cracked broken or rotted shingles with the new ones you purchased. This repair process is also the same for composition and tile roofs.