Maximum Roof Overhang

Figure r804 3 2 1 2 gable endwall overhang details.

Maximum roof overhang.

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 in width from a few inches to several feet. But regarding overhangs theres no point having an overhang that extends further than the point at which it meets a 60 deg line from the floor. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

This is usually the max overshading you can give a room to prvent overheating insummer. Eave overhangs shall not exceed 24 inches 610 mm measured horizontally. If the gable overhang is to resist wind loads properly it must either be designed or constructed in accordance with some pre engineered prescriptive detail. Figure 5 ladder outlooker block method gable end overhang.

Two feet is the general maximum length for a typical roof overhang. A typical metal roof overhang may be 2 to 4 inches or even less. The irc gives a maximum of 24 for roof overhangs. This method is less wind resistant and in literature is limited to a 12 overhang.

On sheds and homes overhangs are commonly referred to as eaves or rakes depending on where they are located. Weather and not properly protected by a roof eave or similar covering table r802 11 required strength of truss or rafter connections to resist wind uplift forcesa b c e f pounds per connection r804 3 2 1 1 eave overhang. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. If the roof overhang is not big enough then the only way to protect these windows doors and entryways is by recessing them into the thick exterior wall or by installing special casing and flashing for each door or entryway.

Also i am putting rigid foam on the outside of my walls so i will have about 2 1 2 of material past the sheathing. An overhang is the portion of the roof that runs past the wall providing coverage for the space around the foundation of your shed.