Minimum Roof Overhang Length

According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following.

Minimum roof overhang length.

A shed overhang is an easy and effective way to protect your shed. 12 to 16 foot eaves 18 inch overhangs. Too little can allow water to seep into rake or fascia boards. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.

Two feet is the general maximum length for a typical roof overhang. 16 foot and taller 24 inch overhangs. The minimum slope for lapped non soldered seam metal roofs without applied lap sealant shall be three units vertical in 12 units horizontal 25 percent slope. You do not need more than 2 feet 0 61 m of total overhang for your building to stay safe and avoid water damage.

4 choose to extend the preexisting rafters to add 2 9 inches 5 1 22 9 cm. Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports. This can make extensive roof overhangs more trouble than they are worth in all but the harshest climates. 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.

You can add 3 to 5 inches to the top. Too much overhang and the shingles could blow off in high winds. A typical metal roof overhang may be 2 to 4 inches or even less. 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.

Another exception would be along eave sides with doors for weather protection longer overhangs generally work best. The edge of the shingles should hang over a roof between an inch and an inch and a half or between a half inch and three quarters of an inch if drip edge flashing is installed. If you only have 1 2 inches 2 5 5 1 cm of overhang you likely need to go with this option.