12 Roof Overhang

They are essential for framing and shading windows reducing splashback and getting rain to fall far enough away from the foundation.

12 roof overhang.

Overhangs can vary from a few inches to a few feet depending on preference. 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. Measure your house at ground level then add in the roof s overhang for greater accuracy. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.

Whereas the overhang on the gable end is a gable ladder. 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. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

Doing so keeps basements and crawlspaces dry and it also helps to. Most roof s have a pitch in the 4 12 to 9 12 range. Roof overhangs might look relatively routine but there is a lot of design thinking that goes into creating the optimal dimensions for each one. The table below shows common roof pitches and the equivalent grade degrees and radians for each.

That said overhangs can extend as far as 2 without the need for external supports. 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. The length of the overhang depends primarily on the climate. Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction.

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. This nominal square footage amount is then multiplied by a factor associated with the roof s pitch. Under the overhang is a structure known as the soffit. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes.

Each truss bears the truss plate institute tpi stamp for quality assurance. The roof overhang refers to how much the edge of the roof goes beyond the house siding. Most homes have an overhang however length varies greatly depending on the architectural style of the roof with slate roofs having longer overhangs typically. Truss capacity is.

Overhangs are common in most house designs providing protection against both wind and rain. Residential trusses save time and materials compared to conventional hand framing.