Roof Valley Installation Instructions

The open woven and closed cut methods are demonstrated.

Roof valley installation instructions.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Ridge eave hip valley and gable end trims. Then install a non corrosive metal valley flashing of 24 minimum width. Next i smear roof cement a couple of inches away from my snapped line.

Install the roofing screws vertically along each rib in the panel. The lowest of these. Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. When i ve finished shingling the first roof plane i snap a chalkline 2 in to 3 in.

Intake low exhaust high 25 roofing failures 28 30 how to estimate roofs 31 35 installation instructions. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. For solid decking at least 15 32 inch structural plywood supported on rafters at a maximum of 24 on center is required. In order to shingle this kind of roof valley a roofing professional has to install both roof faces at the same time which is quite slow.

This video demonstrates the proper installation technique for installing roofing valleys. Without taking steps to maintain quality the fastest roof is typically the one that will cost contractors the most stated guillaume bailly senior training manager canada for the gaf center for the advancement of roofing excellence care. 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. Install an underlayment centered in the roof valley.

Speed is king in residential roof installation but it can come at the expense of quality. Recommended procedures of basic valley flashing installation. Away from the valley center just as i did with the closed cut valley. Installation of panels roof pitch.

If care is taken metal roofing application can be aided by pre. Shingles 36 89 berkshire 36 39. A woven valley shingle installation has other drawbacks including that they are slow to install especially in cold weather and more difficult to repair than the other types. 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.