Steel Roof Valley Installation

Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic.

Steel roof valley installation.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. Install an underlayment centered in the roof valley. Masterrib is a 36 wide 5 r. How to install a valley on a vicwest metal roof.

The top joinery of both valleys when they meet on the same plane of roof is shown here. No sales pitch or other fluff. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Always begin working at the point with the longest peak to eave distance.

Cut corners and apply cement dub cut the top layer shingles see step 4 in open metal valley above. Take care the first piece is aligned precisely perpendicular square to the edge. Install the roofing screws vertically along each rib in the panel. Add the metal panels.

Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line. Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm. Apply two beads of roofing cement to attach the top layer shingles to the bottom layer shingles. Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel. Applicable for ultravic supervic 7 8 corrugated barnmaster diamond rib double. I have my valley custom made with water trough to help with leaking b.

Best practices for sealing the metal roof valley vary based on the slope of the roof. Also apply cement to attach the top layer shingles to each other see steps 5 and 6 in open metal valley above. 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.