what is the minimum vent allowed on a water closet?

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what is the minimum vent allowed on a water closet?

2007-03-31 02:03:24 · 3 answers · asked by daehremmah 1 in Home & Garden ➔ Maintenance & Repairs

3 answers

the vent can only be 1/2 the diameter of the pipe it serves at a minimum. 4" pipe, 2" vent. 3" pipe, 1 1/2" vent. Code

2007-03-31 06:46:59 · answer #1 · answered by Brian M 4 · 1⤊ 1⤋

I would use a 2" minimum vent

2007-03-31 09:17:33 · answer #2 · answered by prop4u 5 · 0⤊ 2⤋

I have not seen any smaller than 2". Local plumbing codes prevail though and they are different from area to area. A call to your local code office can answer you correctly. In States with colder weather, the vent must be larger to prevent them from freezing in the winter.

2007-03-31 09:22:28 · answer #3 · answered by sensible_man 7 · 1⤊ 0⤋