This calculator is to be used as an estimating tool only.
Overhang roof size.
Two feet is the general maximum length for a typical roof overhang.
16 foot and taller 24 inch overhangs.
Overhangs can vary from a few inches to a few feet depending on preference.
However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes.
Another exception would be along eave sides with doors for weather protection longer overhangs generally work best.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.
With that in mind we kept a roof overhang at the eaves as it provides a nice shadow line and protects the second floor windows from a bit of the summer sun.
A typical metal roof overhang may be 2 to 4 inches or even less.
This will protect a roof from most types of damage.
Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports.
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.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
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.
At the rakes however with a nod to yankee frugality and clean modern lines we kept the roof trim as close to flush as practical while still allowing for a rain screen channel.
That said overhangs can extend as far as 2 without the need for external supports.
Outside of the u s a degree angle is typically used.
12 to 16 foot eaves 18 inch overhangs.
Input the rafter span on the flat eave overhang and pitch of the roof.
Click the button to calculate the stock size needed for this job.
This will keep rain away from your shed.
It is often compared to slope but is not exactly the same.
Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.
You can add 3 to 5 inches to the top.
A shed overhang is an easy and effective way to protect your shed.
