Maximum Metal Roof Overhang Without Support

This gets snow and ice drip line farther away from the building walls without the danger of the metal roofing bending under the weight.

Maximum metal roof overhang without support.

Overhangs like those found on a wall pass through and eating bars of more than 6 but less than 12 can be supported with wood or metal corbels. They can also include certain architectural features that make overhangs more than just functional parts of the home. That said overhangs can extend as far as 2 without the need for external supports. This will protect a roof from most types of damage.

Many building departments limit joist cantilevers to 24 maximum. Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports. The distance your joists can safely cantilever or overhang a drop beam is determined by the size of the joists the wood type and grade of the lumber and the spacing between joists. This can make extensive roof overhangs more trouble than they are worth in all but.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. Two feet is the general maximum length for a typical roof overhang. The other common wind related failure at gable ends is uplift of the roof decking at the overhang. Uplift of roof decking at the overhang.

The construction of a roof overhang is one important way that homeowners can protect the exterior of their home and preserve its value. Solid surface tops that are thick that extend beyond the cabinets by six inches or more need overhang support. Some metal roofs have wood framed eaves that extend several inches or a foot beyond the house or shed wall to support metal roofing. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

With a flat shed roof the roof simply extends past the wall plate to provide an overhang. Inadequate nailing of the sheathing to supporting framing or inadequate connections of the framing at the rake edge that supports the roof. In designing the overhanging part of a. You must use at least five framing nails to attach the rim joist to the ends of your joists.