Maximum Roof Overhang

Figure 5 ladder outlooker block method gable end overhang.

Maximum roof overhang.

This method is less wind resistant and in literature is limited to a 12 overhang. An overhang is the portion of the roof that runs past the wall providing coverage for the space around the foundation of your shed. 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. 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. 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. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

In general roof overhangs offer an effective solution for how to protect windows doors and entryways. 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. Does this include drip edges that protrude or rain gutters or is it just the wood structure. Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports.

On sheds and homes overhangs are commonly referred to as eaves or rakes depending on where they are located. This is usually the max overshading you can give a room to prvent overheating insummer. 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. The irc gives a maximum of 24 for roof overhangs.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. This will protect a roof from most types of damage.