Framing A Flat Roof Addition

Remove siding from the house where the new roof will attach to expose rafters or other framing of the old roof.

Framing a flat roof addition.

Step 1 plan. The rise or height of the roof at its peak is the altitude of the triangle. On two sides the roof abuts a parapet a short wall common around flat roofs as well as a wall for the third floor. 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 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. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. 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.

Here the rubber roof will need to run up the walls and glue to the sheathing. Rather than a single slope a gable roof consists of two slopes that meet at a peak running down the middle of the roof. So this is why we left the plywood long utilizing the full 8 sheets. Connect a flat roof to a sloped or pitched roof with a ledger board.

If done properly the flat roof can be tied in so that it doesn t change the look of the house at all. 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. To keep water from pooling at these inside corners tom rips 2x4s lengthwise on a 45 degree bevel with a table saw. The run or half the building span is the base of the triangle.

This addition looks like a floating box. Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat. The 8 step process for diy installation step 1. The original roof had no overhang.

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.