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.

Open eaves with trusses. Before roof trusses the exposed rafter tails were an extension of the roof framing. An eave overhang is located on the longer sides of the shed. The ceiling joists pushed the rafters up and gave extra height to the building.

This leads to a situation where there is an excess amount of shade and the exterior of the home appears dark and gloomy. 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. 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 other common wind related failure at gable ends is uplift of the roof decking at the overhang.

A related problem is that the roof is actually at greater risk of wind damage. More protective of the walls and almost as simple is to add a porch roof at a lower slope see b. My cost of extending a roof overhang. This can be from two causes.

The main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall. A good estimate for a contractor to do this same roof overhang extension would range from 50 to 85 per running foot. Inadequate nailing of the sheathing to supporting framing or inadequate connections of the framing at the rake edge that supports the roof. After that you should fix the cornice board to the end sides of the ridge and the load bearing beams.

The roof overhang does not extend far enough in the first case the overhang is simply too big for the home. This cost did not include any labor or waste disposal fees. Since each end of the 4x6 beam overhangs 16 inches you can determine the length of the diagonal braces using the pythagorean theorem. Uplift of 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. 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. Then load bearing roof beams fixed to the trusses are extended in the same way.