Installing Flashing On Roof Valley

Now notch the first step flashing so that it will bend to go around the chimney front and side as well as at the base.

Installing flashing on roof valley.

When you install roof flashing you will need to use a sealant. Install an underlayment centered in the roof valley. While roofing professionals occasionally use nails when flashing they must choose whether to nail to the roof plane or the vertical wall. Fold the top of the flashing over the ridge.

Apply an approximately 3 inch. Cut the bottom edge and fold it down over the drip edge. Install valley battens on both ends of the roof valley then attach first flashing 3 4 inches over the roof flange and another 3 4 inches over the fascia if any is present. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch.

A flashing on the other hand is a waterproofing material used to prevent leaks on roofs. Recommended procedures of basic valley flashing installation. Step flashing for chimneys. A valley is the part of your roof where two descending parts of the roof meet each other.

Once the shingles have been installed lay the base flashing around the base of the chimney approximately 4 past each end. How to do it determine cuts. Remember to caulk the underside of the flashing with a sealant. Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps.

Now nail this first flashing at both its far ends. Use 1 inch galvanized roofing nails. Make sure to cover the gap at the bottom of the raised ridge. Others start with a 3 inch wide.

Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Installing your roof flashing is going to be slightly different depending on the specific type that you re installing. Lay the flashing down in the roof valley and start at the lower end of the roof. Step 6 install the flashing.

Some roofers cut the shingles parallel to the flashing s center ridge. Valley flashing is made of aluminium metal pvc galvanized steel. Snipping off the corners of.