Over Framing An Existing Roof

We aren t planning on going up a floor so the roof would only be marginally higher than it is now.

Over framing an existing roof.

Patio cover plans building. Over framing is when you frame a roof section on top of another roof section such as when joining a l shaped roof with each section at right angles to each other etc. One of the keys to over roofing is to tie the air control layer of the roof assembly to the air control layer of the wall assembly. The existing slab can vary considerably throwing off crucial measurements.

The fully adhered membrane wrapped down over the cut back roof deck to tie into the wall water control layer and air control layer photograph 11. When you are building a patio cover off of an existing roof or wall you must take all of your measurements from the point at which the patio roof will attach to the existing structure not the outside of the slab. While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below. Also a link to elevations of house.

Tying in to an existing gable roof. Butt the first new truss against the old one. On the front of the roof edges the original roof deck sheathing was cut back flush with the wall and the fully adhered membrane folded down around the rafter tails to catch the. The roof sheathing on the old roof is not rotten just not up to the standards my dh thinks it should be.

Dh is a very skilled carpenter and is confident that he can do this work. Framing a roof is the last step in framing new construction. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. And the line length measurement from the roof peak to the building wall is the hypotenuse.

A properly installed layover roof can look and function as well. Premade roofing trusses will be easier and take less time than installing a stick built roof. The run or half the building span is the base of the triangle. Below is a link to a roof plan with a section that is over framed see note 3.

The rise or height of the roof at its peak is the altitude of the triangle. Remove the top several levels to. On the gable ends this was pretty easy. We are planning to frame the new roof over the existing roof.

Then mount new trusses on the new addition walls. You ll need to remove the siding where it meets the roof.