Maximum Roof Overhang

Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

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. This method is less wind resistant and in literature is limited to a 12 overhang. 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.

This will protect a roof from most types of damage. Overhangs can vary in width from a few inches to several feet. Does this include drip edges that protrude or rain gutters or is it just the wood structure. The irc gives a maximum of 24 for roof overhangs.

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. In general roof overhangs offer an effective solution for how to protect windows doors and entryways. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. Figure 5 ladder outlooker block method gable end overhang.

On sheds and homes overhangs are commonly referred to as eaves or rakes depending on where they are located. Two feet is the general maximum length for a typical roof 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. Figure r804 3 2 1 2 gable endwall overhang details.

Eave overhangs shall not exceed 24 inches 610 mm measured horizontally. 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.