Shed Roof Pitch Minimum

There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch the most obvious of which is the roof s ability to shed or withstand heavy snow rain or wind.

Shed roof pitch minimum. However it can depend a lot on the roofing design and environment circumstances such as weather. Minimum roof pitch for shingles it is important for shingle roofs to function properly and one method of ensuring that this is achieved is to observe the pitch requirements for the shingles. The pitch is measured in inches of vertical rise per foot of horizontal run and the 5v crimp profile shown above requires a minimum slope of three in twelve or 3 12 3 inches vertically per 12 inches horizontally. The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span.

The loft space would be much larger with a roof pitch of 45 degrees. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Corrugated metal roofing has the same minimum pitch. Basically the steeper the pitch the better it can shed snow and rain.

Having a steeper pitched roof allows for more space in a shed loft. Run in degrees and as percentage the minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Therefore if your roof rises 4 inches over the course of 12 inches of horizontal run then your roof pitch is 4 12. The universal measurement of minimum pitch is inch increase every 12 inches of run.

Roof slope equivalents as rise. However you can only use this pitch with built up roofing or specialized synthetic roofing. Remember that pitch is calculated as the height or rise of a roof pitch over 12 inches of horizontal run. Constructing a new shed roof at the desired pitch is as easy as knowing how to use a speed square.

The following table provides the minimum required. As stated in the video speed squares have useful markings on them from 0 to 12.