Minimum Roof Pitch For Snow

If you are adding an addition to your home or installing skylights knowing the existing pitch is important.

Minimum roof pitch for snow.

What is the smallest pitch of a roof. 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. The standard of lower pitch actually ranges between 1 12 to 5 12. 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 minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot. Begin by measuring 12 inches on your level and marking it with a pencil. 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. Minimum roof pitch for shingles. With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.