Framing A Flat Roof Addition

The third tactic for your house addition is to expand an upper level out across an existing one story section such as a flat roof garage or porch.

Framing a flat roof addition.

This addition looks like a floating box. Remove siding from the house where the new roof will attach to expose rafters or other framing of the old roof. On two sides the roof abuts a parapet a short wall common around flat roofs as well as a wall for the third floor. How to tie a additions roof to existing roof roof designs to attach to existing home how to construct a roof from an exsisting shead how to attach a deck roof to existing roof how to add a roof over porch cost to tie into existing roof attache porch roof on house attach shed roof to house adding a roof to screened in porch adding a roof to existing.

The 8 step process for diy installation step 1. Tying in a flat roof addition makes it possible to extend and add to your existing property without affecting the look of it. The rise or height of the roof at its peak is the altitude of the triangle. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

Connect a flat roof to a sloped or pitched roof with a ledger board. Rather than a single slope a gable roof consists of two slopes that meet at a peak running down the middle of the roof. Roof overhang with a new cornice will make this building look like it was added on in 1900 not 1960. This will seal the parts of the roof together and reduce the risk of leaking.

The original roof had no overhang. Step 1 plan. So this is why we left the plywood long utilizing the full 8 sheets. And the line length measurement from the roof peak to the building wall is the hypotenuse.

When matched to the angle and proportions of other rooflines on the house your gable roof will add visual interest and character to the home making the addition look like an asset that belongs with the house. To keep water from pooling at these inside corners tom rips 2x4s lengthwise on a 45 degree bevel with a table saw. Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat. Another is to sever the existing roof around the edges and lift it off temporarily then put it back in place after the new level has been framed in.

Add the plywood once you ve added the framing it s time to add a layer of 5 8 inch plywood sheathing.