Extended Roof Overhang Framing Details

Most sheds with overhangs incorporate both rakes and eaves into their design to give the shed a balanced look.

Extended roof overhang framing details.

The main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall. An eave overhang is located on the longer sides of the shed. This leads to a situation where there is an excess amount of shade and the exterior of the home appears dark and gloomy. The roof overhang does not extend far enough in the first case the overhang is simply too big for the home.

An eave is created by extending the slope of your roof beyond the walls of your shed. The cost of extending my 30 foot long roof overhang 14 inches was 340 or 11 50 per running foot for materials. This cost did not include any labor or waste disposal fees. More protective of the walls and almost as simple is to add a porch roof at a lower slope see b.

Inadequate nailing of the sheathing to supporting framing or inadequate connections of the framing at the rake edge that supports the roof. The simplest approach is to eliminate overhangs see a in the illustration in which case the roof plane effectively terminates at the edge of the building the details are simplified and the thickness of the assembly is not perceived. The ceiling joists pushed the rafters up and gave extra height to the building. Before roof trusses the exposed rafter tails were an extension of the roof framing.

A related problem is that the roof is actually at greater risk of wind damage. My cost of extending a roof overhang. To determine exactly what the rafter tail will look like i always make a full size drawing on a scrap of plywood of all the eaves elements including framing and finish materials see illustration above. A rake overhang is created by extending the roof beyond the gables of your shed.

A good estimate for a contractor to do this same roof overhang extension would range from 50 to 85 per running foot. After that you should fix the cornice board to the end sides of the ridge and the load bearing beams. Open eaves with trusses. The final step of the roof frame was to install the four diagonal braces located at each end of the 4x6 beam and the two 6x6 posts see the diagonal brace detail.

Since each end of the 4x6 beam overhangs 16 inches you can determine the length of the diagonal braces using the pythagorean theorem. For the arrangement of the gable end overhang for the standard roof you lengthen the ridge beam beyond the facade for previously verified length using cut rafters. Then load bearing roof beams fixed to the trusses are extended in the same way.