Framing New Roof Over Existing Roof

Roofing over your existing roof is not always possible.

Framing new roof over existing roof.

The new ridge will tie into the existing roof as a hip and valley offshoot. The roof sheathing on the old roof is not rotten just not up to the standards my dh thinks it should be. If you are building a new home putting an addition on an existing home or replacing your roof down to the rafters you will need a new roof frame. We aren t planning on going up a floor so the roof would only be marginally higher than it is now.

There are a few situations where roofing over an existing roof just isn t possible. Unfortunately it s not an option for everyone. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option a properly installed layover roof can look and function as well. Finish the new roof by nailing on osb sheathing covering it with roofing paper and nailing in metal flashing along the valleys and metal drip edge at the eaves.

Metal roofing materials are available in several styles that require different fastening applications but are most commonly screwed to the roof framing or sheathing material. This new roof with a higher pitch can be accomplished with premade roof trusses and typical asphalt shingles. The exposed edges of the 3 layers of rigid insulation are no longer exposed. Shown is the new rafter system of the porch.

Replacing a roof can be expensive but if a roof contains only a small slope it s possible to raise the roof pitch of a house by building a roof over the old one. Roofs are framed out of lumber and pieced together in a series of triangles designed to bear the load. How to tie a additions roof to existing roof roof additions to existing roofs how to construct a roof from an exsisting shead how to change a roof line how to attach a deck roof to existing roof how to add a roof over porch attache porch roof on house attach shed roof to house adding a roof to screened in porch adding a roof to existing. Lay a metal roofing panel over the existing roof material in the bottom corner of the roof surface and fasten to the roof according to the metal panel instructions.

Dh is a very skilled carpenter and is confident that he can do this work. The roof is erected over a deck that will be screened as an outdoor living area. When you recover your old roof stays and the new roof gets installed on top. The old shingles are visible inside the framing of the new roof.

Sounds simple enough right. Then nail shingles on the new roof and exposed areas of the old roof.