Roof Valley Installation

Valley trim installation now bring in the valley panel that s already been cut.

Roof valley installation.

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. Recommended procedures of basic valley flashing installation. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Most metal shingles will be attached to the roof using metal shingle.

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. Others start with a 3 inch wide. Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet.

Snipping off the corners of. The lowest of these valley shingles is cut back at an angle in line with the lowest course line. Then i install a line of shingles up the valley with the top edge aligned with my snapped line. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Next i smear roof cement a couple of inches away from my snapped line. Then starting at the base of the. You can see that the edge of the valley has been cut so that it s in line with the edge of the eave trim.

The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off. To secure the roof valley flashing nail it down carefully. With a clean valley you can lay down some peel and stick roofing membrane. Ensure ice and water protector has been installed along the valley first.

Install an underlayment centered in the roof valley. Apply an approximately 3 inch. Between the metal and the valley we re going to use tape seal to make sure that water can t lip itself underneath and roll back up underneath the valley. How to do it determine cuts.

Some roofers cut the shingles parallel to the flashing s center ridge.