How To Make A Valley On A Roof

Ensure ice and water protector has been installed along the valley first.

How to make a valley on a roof.

Roof one side of the valley running the shingles across it. On the common rafters the plumb cut is marked with a framing square for a 12 in 12 pitch 45 and cut square i e no bevel. Then starting at the base of the. Snap a chalkline 3 in.

Shingle the other side of the valley the same way. With a clean valley you can lay down some peel and stick roofing membrane. From the valley and you re ready to complete the valley. First clean the debris out of the valley including sawdust nails and whatever else is in there.

I always weave my first course. Then rather than cutting the shingles on the high volume roof plane a row of shingles is installed with the exposure edge facing the valley center. Remove 8 inches of shingles at each side of the valley with a 16 inch nail bar. Insert the bar under a shingle and pry upward at a.

It installs and looks almost the same as a regular cut valley where the shingles on the low volume roof plane are installed first and pass through the center of the valley by at least 12 in. Stop nailing 6 inches from the center. Only nail at the edges with only enough nails to. The first cut that i make on both the common rafters and the valley rafter is the plumb cut where the rafter will meet the ridge board.

After snapping the guide line between marks install the shingles with one corner on the line. How to do a roof valley martin s roofing and guttering merton ltd for all your roofing needs. To secure the roof valley flashing nail it down carefully. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

A chalkline snapped between this mark and the lower mark forms my guide line.