12 Roof Overhang

Overhangs can vary from a few inches to a few feet depending on preference.

12 roof overhang.

Roof overhangs might look relatively routine but there is a lot of design thinking that goes into creating the optimal dimensions for each one. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. Most homes have an overhang however length varies greatly depending on the architectural style of the roof with slate roofs having longer overhangs typically. The siding underneath the overhang is known as the soffit.

Truss capacity is. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. 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 roof overhang refers to how much the edge of the roof goes beyond the house siding.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. This nominal square footage amount is then multiplied by a factor associated with the roof s pitch. 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. Residential trusses save time and materials compared to conventional hand framing.

The length of the overhang depends primarily on the climate. Measure your house at ground level then add in the roof s overhang for greater accuracy. Each truss bears the truss plate institute tpi stamp for quality assurance. Under the overhang is a structure known as the soffit.

They are essential for framing and shading windows reducing splashback and getting rain to fall far enough away from the foundation. The table below shows common roof pitches and the equivalent grade degrees and radians for each. Doing so keeps basements and crawlspaces dry and it also helps to. Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction.

Most roof s have a pitch in the 4 12 to 9 12 range. Overhangs are common in most house designs providing protection against both wind and rain. Trusses are professionally designed with state of the art computer programs. The overhang at the bottom of the slope is a simple overhang.

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