12 Roof Overhang

Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction.
12 roof overhang. Gable roofs are excellent at keeping water away from the building when it rain since. Roof trusses 16 inch o c. If the overhang extends beyond 24 inches say to 30 inches then a 2 6 top chord for the tail section will be required to handle the additional overhang. Above is a chart showing the angle of various roof pitches.
Roof overhangs might look relatively routine but there is a lot of design thinking that goes into creating the optimal dimensions for each one. 3 12 6 12 and 12 12 roof pitch options 12 inch overhang 31 sizes from 8 4 to 16 32 8 10 12 14 16 ft widths single and double doors floor studs 12 inch o c. How to extend a gable end roof overhang. For instance i think that in heavy snow country large overhangs can lead to ice dams forming on the overhangs snow melting.
They are essential for framing and shading windows reducing splashback and getting rain to fall far enough away from the foundation. The roof is flat and a crane lifts it up and it is unfolded into place on site. The vertical rise of the top chord per 12 horizontal inches is the roof pitch or slope. Image 1 12 to 12 12 roof pitch 7 12 pitch.
See below i need to acknowledge there are some good reasons in some places to not have a large overhang. Wall studs 16 inch o c. Doing so keeps basements and crawlspaces dry and it also helps to. For example 4 12 pitch means 4 inches of rise in 12 inches of run.
Double top plates includes 48 inch loft the length of the shed with an optional gable end door frame for pre hung doors and windows. We included a roof pitch chart below the 7 12 example image and the calculator below that. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. Overhangs can vary from a few inches to a few feet depending on preference.
The length of the overhang depends primarily on the climate. Overhangs are common in most house designs providing protection against both wind and rain. That said overhangs can extend as far as 2 without the need for external supports. A gable roof refers to any pitched roof that meets in the center of the building to give it a triangular look.
If this isn t practical then perform the same measurement on the underside of the roof. Beefing up the strength of the.