Roofing W Valley Flashing

Step 9 cut corners and apply cement.

Roofing w valley flashing.

Cut the top layer of shingles along the chalkline. When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter. Lile points out that valleys lined with roll roofing are not as durable. With a clean valley you can lay down some peel and stick roofing membrane.

Clip the top corner of shingles along valleys to keep water flow toward center of valley. First clean the debris out of the valley including sawdust nails and whatever else is in there. Slip a piece of sheet metal flashing under the top layer of shingles to protect the bottom layer in the valley while you cut the shingles with a hook blade. Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic.

Get free shipping on qualified valley flashing roof flashing or buy online pick up in store today in the building materials department. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Be sure to check local building codes to ensure you have the proper width for your application.