Metal Roof Valley Flashing Installation

How to do it determine cuts.

Metal roof valley flashing installation.

Drip edge installation on an existing roof. When installing metal valley flashing there are a few things to keep in mind from cutting metal roofing to sealing the flashing. 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. How to cut metal roofing to fit valleys.

Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Others start with a 3 inch wide. Make sure that the end of the flashing panel is perfectly in line with the edge of the roof. Lay the flashing down in the roof valley and start at the lower end of the roof.

To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Use 1 inch galvanized roofing nails. Install an underlayment centered in the roof valley. Attach the flashing panel in place at the bottom.

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. Cut the bottom edge and fold it down over the drip edge. Now nail this first flashing at both its far ends. Dealing with dips and making clean overlaps metal drip edge flashing is installed on the perimeter of a roof to direct water away from the fascia into the gutters and to keep wind blown rain.

Applicable for ultravic supervic 7 8 corrugated barnmaster diamond rib double. Make sure to cover the gap at the bottom of the raised ridge. Recommended procedures of basic valley flashing installation. Metal valley trim also known as metal valley flashing is beneficial because it drains water away from the structure of your metal building which helps prevent moisture damage.

Apply an approximately 3 inch. Some roofers cut the shingles parallel to the flashing s center ridge. How to install a valley on a vicwest metal roof. Step 6 install the flashing.

Fold the top of the flashing over the ridge.