12 Roof Overhang

That said overhangs can extend as far as 2 without the need for external supports.

12 roof overhang.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. The roof overhang refers to how much the edge of the roof goes beyond the house siding. Residential trusses save time and materials compared to conventional hand framing. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes.

The roof overhang occurs in a similar way to the pent roof in that the top chord of the roof truss projects past the wall plate by the desired amount. They are essential for framing and shading windows reducing splashback and getting rain to fall far enough away from the foundation. Trusses are professionally designed with state of the art computer programs. A typical metal roof overhang may be 2 to 4 inches or even less.

Overhangs are common in most house designs providing protection against both wind and rain. Whereas the overhang on the gable end is a gable ladder. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. This nominal square footage amount is then multiplied by a factor associated with the roof s pitch.

Measure your house at ground level then add in the roof s overhang for greater accuracy. Overhangs can vary from a few inches to a few feet depending on preference. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. Under the overhang is a structure known as the soffit.

Most roof s have a pitch in the 4 12 to 9 12 range. The length of the overhang depends primarily on the climate. The siding underneath the overhang is known as the soffit. The overhang at the bottom of the slope is a simple overhang.

Doing so keeps basements and crawlspaces dry and it also helps to. Truss capacity is. The lumber components are precision cut and assembled together with galvanized steel truss plates in a factory controlled environment. As an example if your overhang is 12 inches you ll add 2 feet to the overall length and 2 feet to the overall width of the house.

Most homes have an overhang however length varies greatly depending on the architectural style of the roof with slate roofs having longer overhangs typically. Each truss bears the truss plate institute tpi stamp for quality assurance.