Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.
How to do a roof overhang.
With a flat shed roof the roof simply extends past the wall plate to provide an overhang.
If you re going to take the leap and try it yourself do it safely and smartly.
Extending a gable roof can be tricky since it involves working on the roof but you may be able to do it yourself if you only need to add 1 2 2 inches 1 3 5 1 cm.
Doing so keeps basements and crawlspaces dry and it also helps to.
Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.
A typical metal roof overhang may be 2 to 4 inches or even less.
Framing a new overhang.
A roof overhang protects the building under it from rain and weather and if your house doesn t have one adding an overhang is not an especially difficult construction job.
There is a lot to know a lot to do and a whole lot to be carried.
They are essential for framing and shading windows reducing splashback and getting rain to fall far enough away from the foundation.
However for larger extensions you ll need to hire a professional to get up there and remove large portions of the roof before extending the overhang.
The size of the roof overhang you choose depends largely on the style of your shed s roof.