Min Roof Pitch Ny

What is the minimum pitch slope of an asphalt shingle roof.

Min roof pitch ny.

With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. 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. However you can only use this pitch with built up roofing or specialized synthetic roofing. Minimum roof pitch for shingles.

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. Shingles of all types need to have a slope to function properly. If a roof slope rises say 4 inches when measured 12 inches along the bottom of a horizontal roof truss the roof slope is said to be 4 12. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.

I e 4 inches of rise per 12 inches one foot of run. The following tableprovides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The minimum roof slope allowed by code for any type of roofis in 12 applicable only to coal tar pitch roof systems. The minimum requirement is 2 12.

The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.