Installing Metal Roof Valley Flashing

To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch.

Installing metal roof valley flashing.

Use 1 inch galvanized roofing nails. Snipping off the corners of. Apply an approximately 3 inch. Cut the bottom edge and fold it down over the drip edge.

Fold the top of the flashing over the ridge. 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. Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs. Some roofers cut the shingles parallel to the flashing s center ridge.

Others start with a 3 inch wide. Make sure to cover the gap at the bottom of the raised ridge. Step 6 install the flashing. How to do it determine cuts.

A batten is a roofing component made of a thin layer of metal plastic or wood and is used as a fixing point for roof tiles and roofing sheets. Now nail this first flashing at both its far ends. Remember to caulk the underside of the flashing with a sealant. Install the valley battens on the sides of the roof that you want to place the valley flashing.

Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Lay the flashing down in the roof valley and start at the lower end of the roof. Place the flashing on the upper portion or the upper flange of the batten. 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.

Install an underlayment centered in the roof valley. Attach the flashing panel in place at the bottom.