Minimum Roof Pitch Shingled Roof

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

Minimum roof pitch shingled roof.

This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Shingles of all types need to have a slope to function properly.

So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum. 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 minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot. You could also opt for a pvc flat roofing membrane.

The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The standard of lower pitch actually ranges between 1 12 to 5 12. There are some standing seam metal roofing options available from atas and other manufacturers that can be installed on a roof with pitch of 1 12.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. What is the minimum pitch slope of an asphalt shingle roof. The minimum requirement is 2 12. 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.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. However you can only use this pitch with built up roofing or specialized synthetic roofing. The metal roof minimum slope doesn t stray far from other building with different material.