Extended Roof Overhang Framing Details

Inadequate nailing of the sheathing to supporting framing or inadequate connections of the framing at the rake edge that supports the roof.

Extended roof overhang framing details.

Uplift of roof decking at the overhang. This leads to a situation where there is an excess amount of shade and the exterior of the home appears dark and gloomy. Before roof trusses the exposed rafter tails were an extension of the roof framing. 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.

Most sheds with overhangs incorporate both rakes and eaves into their design to give the shed a balanced look. A rake overhang is created by extending the roof beyond the gables of your shed. An eave is created by extending the slope of your roof beyond the walls of your shed. A related problem is that the roof is actually at greater risk of wind damage.

Since each end of the 4x6 beam overhangs 16 inches you can determine the length of the diagonal braces using the pythagorean theorem. 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. The other common wind related failure at gable ends is uplift of the roof decking at the overhang.

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. 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. The ceiling joists pushed the rafters up and gave extra height to the building. An eave overhang is located on the longer sides of the shed.

The main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall. Open eaves with trusses. More protective of the walls and almost as simple is to add a porch roof at a lower slope see b. Then load bearing roof beams fixed to the trusses are extended in the same way.

My cost of extending a roof overhang. 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.