Minimum Roof Pitch For Snow

You can safely measure the roof pitch from inside your attic with a level that is either 18 or 24 inches a tape measure and a pencil.

Minimum roof pitch for snow.

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 is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot. With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.

But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof. The standard of lower pitch actually ranges between 1 12 to 5 12. In snowy areas your roof should be at least 10 12 40 to allow snow to shed while the safest roof pitch in very windy areas is between 4 12 6 12 18 5 26 5. Minimum roof pitch for shingles.

What is the smallest pitch of a roof. Anything above that will require you to put out higher cost because they are already considered as higher pitch. The smallest pitch of a roof is 0 5 12. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.