Roof Valley Installation

Install an underlayment centered in the roof valley.

Roof valley installation. Then i install a line of shingles up the valley with the top edge aligned with my snapped line. Valley trim installation now bring in the valley panel that s already been cut. Others start with a 3 inch wide. Place a piece of sheet metal under the shingles to make sure you will not damage the flashing.

Away from the valley center just as i did with the closed cut valley. The lowest of these valley shingles is cut back at an angle in line with the lowest course line. 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. How to do it determine cuts.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Apply an approximately 3 inch. 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. 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.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. To secure the roof valley flashing nail it down carefully. Then starting at the base of the. Next i smear roof cement a couple of inches away from my snapped line.

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. Only nail at the edges with only enough nails to. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. When i ve finished shingling the first roof plane i snap a chalkline 2 in to 3 in.

Recommended procedures of basic valley flashing installation. Snipping off the corners of. Ensure ice and water protector has been installed along the valley first. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

With a clean valley you can lay down some peel and stick roofing membrane.