Installing A Metal Roof Valley

Take care the first piece is aligned precisely perpendicular square to the edge.

Installing a metal roof valley.

Always begin working at the point with the longest peak to eave distance. Most metal shingles will be attached to the roof using metal shingle. Step 9 cut corners and apply cement. Lay the flashing down in the roof valley and start at the lower end of the roof.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. 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. Best practices for sealing the metal roof valley vary based on the slope of the roof. Cut the top layer of shingles along the chalkline.

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. Apply an approximately 3 inch. Install synthetic roofing. Make sure that the end of the flashing panel is perfectly in line with the edge of the roof.

To secure the roof valley flashing nail it down carefully. Then starting at the base of the. Use 1 inch galvanized roofing nails. First clean the debris out of the valley including sawdust nails and whatever else is in there.

How to seal metal roof valley. Ensure ice and water protector has been installed along the valley first. With a clean valley you can lay down some peel and stick roofing membrane. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. 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. Only nail at the edges with only enough nails to. Install an underlayment centered in the roof valley.

Add the metal panels. Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris.