Standard Roof Overhang Length

Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports.

Standard roof overhang length.

The ideal spec for roof overhangs the size of the roof overhang depends on the property. Pitch slope the pitch or slope is the incline of the roof expressed as a fraction describing the rise over the run. But roof overhangs are a great system to protect houses 3 stories and under. 12 to 16 foot eaves 18 inch overhangs.

A shed overhang is an easy and effective way to protect your shed. Two feet is the general maximum length for a typical roof overhang. 16 foot and taller 24 inch overhangs. This will keep rain away from your shed.

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. 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. This will protect a roof from most types of damage.

The run or the base number is 12 inches. We can also build a cantilever for the overhang which is where the bottom chord of the truss continues beyond the wall. The rise will be the elevation change over the 12 inches. The exceptions include enclosed overhangs on open sidewalls i do not like the look and they become a nesting place for small flying critters and birds.

A typical metal roof overhang may be 2 to 4 inches or even less. On very tall buildings there are hardly any benefits of roof overhangs as the surface areas of the walls are so high. You can add 3 to 5 inches to the top. That said overhangs can extend as far as 2 without the need for external supports.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.