12 Roof Overhang

The table below shows common roof pitches and the equivalent grade degrees and radians for each.

12 roof overhang.

Most homes have an overhang however length varies greatly depending on the architectural style of the roof with slate roofs having longer overhangs typically. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. Overhangs are common in most house designs providing protection against both wind and rain. A typical metal roof overhang may be 2 to 4 inches or even less.

The roof overhang refers to how much the edge of the roof goes beyond the house siding. This nominal square footage amount is then multiplied by a factor associated with the roof s pitch. The siding underneath the overhang is known as the soffit. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.

Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. Under the overhang is a structure known as the soffit. The overhang at the bottom of the slope is a simple overhang.

The length of the overhang depends primarily on the climate. Truss capacity is. Residential trusses save time and materials compared to conventional hand framing. 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.

Most roof s have a pitch in the 4 12 to 9 12 range. Measure your house at ground level then add in the roof s overhang for greater accuracy. 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. Overhangs can vary from a few inches to a few feet depending on preference.

Trusses are professionally designed with state of the art computer programs. The lumber components are precision cut and assembled together with galvanized steel truss plates in a factory controlled environment. Doing so keeps basements and crawlspaces dry and it also helps to. They are essential for framing and shading windows reducing splashback and getting rain to fall far enough away from the foundation.

Each truss bears the truss plate institute tpi stamp for quality assurance. That said overhangs can extend as far as 2 without the need for external supports.