Minimum Shed Roof Angle

That works out to about nine degrees if that works better for you.

Minimum shed roof angle.

These are also the most common pitches for shed roofs. Much depends on what your intended use for the shed actually is. Use a pitch of more than ten degrees for more efficient rain protection. Any roof from 4 12 to 9 12 is considered an ordinary angle for a roof.

Again the most important consideration is the weather. The roof comprises a simple beam. The requirements for an asphalt shingles roof are contained in the international building code. I always recommend at least a minimum pitch of 1 in 40.

The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Fix your roof deck and you are done. This translates into a fall of just under 2 5 on an 8 foot roof. The minimum requirement is 2 12.

A flat roof is more likely to allow rain to pool and this can cause damage especially if the roof is made of a porous substance like wood. According to this code the minimum slope for asphalt shingles is 17 degrees or two vertical units to twelve units in the horizontal. A pitch of 10 degrees or less is typically regarded as a flat roof. If you are only trying to keep a wood pile dry or storing a few outdoor tools and light machinery out of the weather then you might consider a simple single pitch roof since most everything inside will be stored at ground level and pulled out from the outside of the shed.

However you can only use this pitch with built up roofing or specialized synthetic roofing.