How To Replace Roof Valley Flashing

Apply an approximately 3 inch.

How to replace roof valley flashing. Pull or cut off any nails. Recommended procedures of basic valley flashing installation. Then install a non corrosive metal valley flashing of 24 minimum width. Fold the top of the flashing over the ridge.

A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water. Pry and lift off the flashing. Position a new vent pipe flashing over the vent push it down into place and nail where shingles will cover it. Now ask a family member to stand inside the house under the roof valley and then standing on the roof pour a bucket of water onto your handiwork.

Start at the lower end of the valley. Cut the bottom edge and fold it down over the drip edge. Do not drive nails into the flashing. How to do it.

Install an underlayment centered in the roof valley. 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. Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Caulk any openings left and made by the flashing process with a suitable sealant then dust the flashing once it is dry and paint over with granule paint available at hardware stores of your desire.

To replace flashing around the vent pipe first remove the shingles covering the flange at the back and sides. Cut each side of the flashing at the lower end to conform with the corresponding edges of the roof using sheet metal. Make sure to cover the gap at the bottom of the raised ridge.