How Do You Build A Roof Valley

This roof valley is a perfect example.

How do you build a roof valley.

Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. The cut edge then is sealed with roof cement. To build a hip roof start by measuring the width and height of the building you re putting the roof on. Soup to nuts riley shows the proper way of installing a valley on a roof.

Framing a complex roof is one of the trickiest parts of home building. No sales pitch or other fluff. Although this valley system isn t entirely new you won t find it described on shingle wrappers. When you reach the valley lay the shingles over the valley and trim the edges to the chalk line.

Next once you know the lengths of the rafters cut some wooden planks to size and make birdsmouth cuts in each one so. Nail down each valley shingle at least two inches 50 mm back from the chalk line. A roof valley is very prone to leaks especially if you have an older roof. Soup to nuts riley shows the proper way of installing a valley on a roof.

Then enter those measurements into an online roofing calculator to determine how long each common rafter will need to be. But it doesn t have to be. To do this we had to extend the plane of the shed roof out over the porch roof creating a small triangular extension of the existing roof. The bottom of our blind valley was about 30 inches short of the bottom of the porch roof so we extended the line of the valley down to the edge of the new roof.

If you begin with accurate as built measurements and use a construction calculator to do the math you can cut all of the rafters for most roofs on the ground in just one shot. Begin to install roof shingles on either roof face. The reason why the roof valley is such a sensitive area has to do with all the rainwater and or melting snow that accumulates and flows through the valley on its way into the gutters. How to do a roof valley martin s roofing and guttering merton ltd for all your roofing needs.

You can use a straight edge to achieve a straight cut. Masterrib is a 36 wide 5 r. This valley looks the same as a cut valley only it s faster to install.