Newspaper article The Topeka Capital-Journal

At Home: Gurgling Sound in Bathtub Drain? Check Vents

Newspaper article The Topeka Capital-Journal

At Home: Gurgling Sound in Bathtub Drain? Check Vents

Article excerpt

Q: We have a gurgling sound that erupts from our bathtub drain every time we flush the toilet. No water comes up from the drain, and it drains well when we shower.

Could something be wrong with the roof vent?

A: For waste water to properly drain, there must be air behind the water, which requires a plumbing vent above the roof. In some instances, an automatic air vent or air admittance valve can be used to provide the air needed without allowing sewer gases to enter the home. Plumbing vents provide air to allow the water in the pipes to drain; it is not a vent for odors.

If you think of placing your thumb over a soda straw immersed in a glass of soda and lifting the straw out of the glass, the liquid will remain in the straw until you remove your thumb. …

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