Roof Open W Valley Installation Instructions

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

Roof open w valley installation instructions.

The volume of water varies with the valley s length and slope. Ensure ice and water protector has been installed along the valley first. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line. To secure the roof valley flashing nail it down carefully.

Install an underlayment centered in the roof valley. Roof one side of the valley running the shingles across it. Roof valleys are like gutters with a steep pitch. W type valley flashing is more rigid for handling so it stays straight and it stops waler rushing down one side of a roof from rushing back up the other side.

But the stakes are higher for valleys than they are for gutters in a previous video we covered how to flash. Valley constructions 14 open valleys 15 shingle application 16 flashing details 19 24 flashing against vertical sidewalls 19 flashing around chimneys 20 roofing ventilation 25 27 proper ventilation. Shingles 36 89 berkshire 36 39. Lutely necessary to follow a manufacturer s installation.

Install the roofing screws vertically along each rib in the panel. Next i smear roof cement a couple of inches away from my snapped line. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Away from the valley center just as i did with the closed cut valley.

Stop nailing 6 inches from the center. Intake low exhaust high 25 roofing failures 28 30 how to estimate roofs 31 35 installation instructions. Open valleys open valleys are constructed by installing a metal lining. The lowest of these valley shingles is cut back at an angle in line with the lowest course line.

Then starting at the base of the. When i ve finished shingling the first roof plane i snap a chalkline 2 in to 3 in. Then install a non corrosive metal valley flashing of 24 minimum width. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

Then i install a line of shingles up the valley with the top edge aligned with my snapped line. Recommended procedures of basic valley flashing installation. Only nail at the edges with only enough nails to. Plane of the main roof.

Lap successive sheets of metal flashing a minimum of 12 inches and seal laps.