New Pitch On An Existing Roof

Remove the top several levels to.

New pitch on an existing roof.

To tie into the side of an existing roof put a new roof truss on the walls of the addition brace it upright then snap chalklines on the shingles to mark the center line of the new roof valleys where old and new roofs will connect. A homemade pitch measuring tool determines the pitch of an existing shed roof. Take careful measurements to determine how many trusses you will need. One engineer recommends a 12 12 pitch for the new roof while another recommends a 7 12 pitch.

Use a pry bar to pull nails loose then remove them with a crow bar or. This is for the top level of a 3 story building that is 26 by 64. We simply slid the straightedge over until it hit the shed roof and then positioned a 2 by under. Use prefabricated trusses to put a new pitch.

Secure the material in place with galvanized roofing nails. Change the pitch on an existing sloped roof by removing the old roof and framing. You ll need to remove the siding where it meets the roof. If your old roof s sheath was in very good condition you can use it on the new roof.

Consult with your city or town s local building codes on the material that you can use. That is usually used for screeding concrete on top of the porch rafters to project the plane of the new porch roof over to the surface of the existing shed roof. When we talk about a new roof we typically mean tearing off and replacing the old shingles any damaged roof decking flashing and the old gutter system and replacing it. Premade roofing trusses will be easier and take less time than installing a stick built roof.

Remove rafters or trusses one at a time. The builder must determine the pitch or slope of the roof and use that measurement to figure the total rise from the wall s cap plate to the roof ridge. How to increase the pitch by building a roof over an existing roof use premade roof trusses. With the total rise they can calculate rafter length and the total number of rafters needed accounting for any overhang along the eaves.

This includes plywood or osb. The ibhs recommends a 4 to 6 pitch roof. Apply a new sheath to the new roof.