Standard Roof Overhang Size

You can add 3 to 5 inches to the top.

Standard roof overhang size.

Two feet is the general maximum length for a typical roof overhang. 12 to 16 foot eaves 18 inch overhangs. 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. 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.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. A shed overhang is an easy and effective way to protect your shed. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. This will protect a roof from most types of damage.

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. If the overhang exceeds 2 5 feet we will need to use a larger top chord for the overhang typically a 2 6 top chord for the truss. The rise will be the elevation change over the 12 inches.

Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports. Overhangs can vary from a few inches to a few feet depending on preference. Cantilevered structures are popular for homes with balconies. 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.

A standard overhang is 16 24 inches but the overhang can be any length you wish. At the rakes however with a nod to yankee frugality and clean modern lines we kept the roof trim as close to flush as practical while still allowing for a rain screen channel. The run or the base number is 12 inches. A typical metal roof overhang may be 2 to 4 inches or even less.

Pitch slope the pitch or slope is the incline of the roof expressed as a fraction describing the rise over the run.