Installing A Metal Roof Valley

Always begin working at the point with the longest peak to eave distance.

Installing a metal roof valley.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. 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. Step 9 cut corners and apply cement. Best practices for sealing the metal roof valley vary based on the slope of the roof.

Install synthetic roofing. Only nail at the edges with only enough nails to. Take care the first piece is aligned precisely perpendicular square to the edge. Ensure ice and water protector has been installed along the valley first.

To secure the roof valley flashing nail it down carefully. Install an underlayment centered in the roof valley. 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. Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel.

Attach the flashing panel in place at the bottom. Most metal shingles will be attached to the roof using metal shingle. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Cut the top layer of shingles along the chalkline.

First clean the debris out of the valley including sawdust nails and whatever else is in there. Recommended procedures of basic valley flashing installation. With a clean valley you can lay down some peel and stick roofing membrane. Add the metal panels.

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 an approximately 3 inch. Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris. Lay the flashing down in the roof valley and start at the lower end of the roof.

Make sure that the end of the flashing panel is perfectly in line with the edge of the roof. Fold the top over the roof ridge and cut the bottom along the drip edge metal.