Open Roof Valley Repair

Repairing a roof valley involves removing some shingles and installing a sheet metal flashing from top to bottom in the valley.

Open roof valley repair.

After the self adhering underlayment is installed across the valley a pre bent metal valley lining is installed. Most valleys use either aluminum or copper. The metal is usually pre painted to best complement the shingles color blend. Leave the entire area to settle into place and then check your roof for leaks the next time that it rains.

Clean surface of valley with wire brush. For a do it yourself homeowner the job is easier with the help of an. Open valley when compared to a closed valley and open valley adds an additional layer of lining. You may need to use the hammer to push it back into place around the flashing but you can then just place the loose asphalt on the surface.

T o repair an open valley. If your roof valley leak is an old repair gone bad consider having a professional repair the leak properly. The best way to do this is to install new metal flashing. Cut corners and apply cement dub cut the top layer shingles see step 4 in open metal valley above.

In comparison to a closed valley an open valley adds another layer of lining into the valley. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck. But as mentioned this is only a short term solution and you ll eventually need to construct a new roof valley. Take the asphalt which you had previously removed from the roof valley and lay it back into place.

Once the shingles are installed they don t run through the valley area. This metal lining can be made of any type of metal that is resistant to the effects of weather acid rain or other contaminants. Apply two beads of roofing cement to attach the top layer shingles to the bottom layer shingles. This leaves a metal strip or line on the surface of the roof that serves as the valley line.

Some shingles and flashing may need to be removed and replaced but the roof can usually be saved with a good quality repair. Roofing shingles are installed then cut and sealed where they overlap the metal channel. Also apply cement to attach the top layer shingles to each other see steps 5 and 6 in open metal valley above. Open roof valley this is almost the same as the closed roof valley method except a pre bent metal valley lining is installed instead of a secondary roof underlayment.

Basic roof valley repair for a temporary repair you may be able to use roofing cement to mend any cracks or leaks. Using different metal to patch valley will cause corrosion. This valley flashing material can be manufactured from any metal that will resist the effects of weather acid rain and other contaminants.