Vent Pipe Distance Above Roof

On a sink that would be either the rim or overflow hole.

Vent pipe distance above roof.

Vent pipes shall terminate not less than 6 inches above the roof measured from the highest point where the vent intersects the roof. Your home s plumbing system is designed to efficiently remove water and waste. Above the roof plumbing vent height. All other gas vents shall terminate not less than 2 feet 610 mm above the highest point where they pass through the roof and at least 2 feet 610 mm higher than any portion of a building within 10 feet 3048 mm.

New york state just raised plumbing vent pipe code from 12 inches to 18 inches above the roof and at least 10 feet horizontal distance from any opening to the building i e. Its drainage and vent functions are actually two systems. In other words the highest point within a 10 foot circle of the pipe. A note on the main drain.

The epa and other guidelines somewhat follow the standard codes for plumbing vent pipes which generally are vented above the buildings roof. However it needs to be at least six inches above your fixture s flood level to keep from getting wet. The vent stack is the pipe leading to the main roof vent. The re vent is the only exception since it runs horizontally.

They may also see that the slope column references 1 4 inch per foot but they are likely to assume that it s just reiterating the minimum allowable slope for a 2 inch drain. If the pipe is farther than 10 feet from the roof peak it must be 2 feet above the highest point of the roof within 10 feet. Window or fresh air intake. Where a roof is used for any purpose other than weather protection vents shall extend at least 7 feet above the roof and shall be properly supported.

Why plumbing air vents are important.