Roof Open W Valley Installation Instructions

Roof one side of the valley running the shingles across it.

Roof open w valley installation instructions.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Only nail at the edges with only enough nails to. Intake low exhaust high 25 roofing failures 28 30 how to estimate roofs 31 35 installation instructions. Then starting at the base of the.

Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Roof valleys are like gutters with a steep pitch. Shingles 36 89 berkshire 36 39. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

Open valleys open valleys are constructed by installing a metal lining. Shingle the other side of the valley the same way. 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. The lowest of these valley shingles is cut back at an angle in line with the lowest course line.

Away from the valley center just as i did with the closed cut valley. Recommended procedures of basic valley flashing installation. 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. To secure the roof valley flashing nail it down carefully.

Ensure ice and water protector has been installed along the valley first. A valley s main function is to create runoff pathways to direct water flow from the roof planes into a valley trough. The volume of water varies with the valley s length and slope. 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. Install an underlayment centered in the roof valley. Lutely necessary to follow a manufacturer s installation. Then install a non corrosive metal valley flashing of 24 minimum width.

Install the roofing screws vertically along each rib in the panel. Stop nailing 6 inches from the center. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Plane of the main roof.

When i ve finished shingling the first roof plane i snap a chalkline 2 in to 3 in.