Standard Roof Overhang Size

12 foot eaves and under 12 inch overhangs.

Standard roof overhang size.

I ve always felt overhangs should generally be proportionate to the height of the building being constructed with some exceptions of course due to function. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. Cantilevered structures are popular for homes with balconies. This will protect a roof from most types of damage.

12 to 16 foot eaves 18 inch overhangs. A typical metal roof overhang may be 2 to 4 inches or even less. You can add 3 to 5 inches to the top. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

There will be some overlap which comes down to individual preferences. Two feet is the general maximum length for a typical roof overhang. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. The rise will be the elevation change over the 12 inches.

With that in mind we kept a roof overhang at the eaves as it provides a nice shadow line and protects the second floor windows from a bit of the summer sun. That said overhangs can extend as far as 2 without the need for external supports. To create a cantilever properly you will need to know plenty about physics like torque and rotational equilibrium. Pitch slope the pitch or slope is the incline of the roof expressed as a fraction describing the rise over the run.

A shed overhang is an easy and effective way to protect your shed. A standard overhang is 16 24 inches but the overhang can be any length you wish. Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports. The run or the base number is 12 inches.

For example a slope of 6 12 means for every 12 inches of horizontal distance the slope of the roof will rise 6 inches vertically.