Installing A Metal Roof Valley

Lay the flashing down in the roof valley and start at the lower end of the roof.

Installing a metal roof valley.

Make sure that the end of the flashing panel is perfectly in line with the edge of the roof. Apply an approximately 3 inch. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Use 1 inch galvanized roofing nails.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Only nail at the edges with only enough nails to. Attach the flashing panel in place at the bottom. 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.

Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris. 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. Best practices for sealing the metal roof valley vary based on the slope of the roof. 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.

Add the metal panels. Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel. Step 9 cut corners and apply cement. Cut the top layer of shingles along the chalkline.

Then starting at the base of the. With a clean valley you can lay down some peel and stick roofing membrane. Most metal shingles will be attached to the roof using metal shingle. First clean the debris out of the valley including sawdust nails and whatever else is in there.

Ensure ice and water protector has been installed along the valley first. Take care the first piece is aligned precisely perpendicular square to the edge. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. To secure the roof valley flashing nail it down carefully.

Always begin working at the point with the longest peak to eave distance. Install an underlayment centered in the roof valley.