How to Diagnose a Gurgling Sink | Ask This Old House
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- čas přidán 27. 01. 2018
- Ask This Old House plumbing and heating expert Richard Trethewey shows host Kevin O’Connor the proper way to ventilate a sink.
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Cost: $20 and Up
Skill Level: Moderate
Tools List for Diagnosing a Gurgling Sink:
Pipe wrench
Shopping List:
PVC pipes
Steps:
1. If a sink is gurgling after the toilet flushes, there’s probably a good chance the drain is not ventilated properly.
2. Replace whatever pipe fitting is at the drain past the P trap with a T fitting. Run pipe from the bottom of the T to the main drain line and then run pipe from the top of the T to the vent system of the house. This may require running a pipe to the roof if there isn’t a vent system.
3. In some areas, code may permit a retrofitted mechanical vent that can be placed on a pipe on top of the T instead of running it to the roof or vent system.
Resources:
Richard demonstrated a PVC P-trap with a mechanical vent that can be used where conventional venting is not an option. These and the materials required to install them can be found at home centers and plumbing supply stores.
About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers-and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.
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How to Diagnose a Gurgling Sink | Ask This Old House
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First check this. I had a sink in a bar area that gurgled when i flushed a toilet in another room. The bar sink wasnt used much. It dawned on me the sink trap water had evaporated. Ran water down sink, no more gurgling. Of course, good practice is to keep water in traps as a maintenance task.
If only every plumber was like Richard. Pleasant, clearly explains the issue and how things should be.
Demonstration using the 2 water bottles, one unvented and second vented was brilliant.
This also explains why shooting a beer is so effective.
see now not a word or sentence wasted. He was too the point and go to the conclusion quickly and clearly. Full thumbs up.
s-trap wrong, p-trap proper
OH, the elusive gurgle has touched my unknowing eardrums before
All I hear is air flowing in the bathroom sink drain where I live. When my air conditioner comes on I can really hear it
Wow that's exactly what's going on in our bathroom . But there is a vent on a pipe under the sink. Wht to do about it ..
Now that’s a real old school plumber talking! Great video and explanation!
Very well explained and great options for solving the problem.
My house was built in 1961. Currently dealing with this. Problem is I need a lot more than just a vent. The stack needs to be replaced. Toilet, tub, sink all needs compete plumbing and venting. I need a winning lottery ticket. Reality just checked in and reminded me, I'm broke on CZcams trying to self fix my problem 😂😂
Don't know about in the US but here in the UK we have simple anti-siphon bottle traps that effectively incorporate the air-admittance valve into the trap.
Great video.
Good information!
What if you get the gurgle from all the fixtures when either of two toilets is flushed (main floor and basement)...and both the toilets are also filling up precariously before going down slowly? And what if this is intermittent and only true about 60% - 70% of the time? Our dry vent to the roof connects with the main drain pipe at the ceiling of the basement just below the upstair toilet, and about 7-8 feet above the basement toilet. It seems obvious this is a ventilation problem, but I'm unsure if it's the vent to the roof or a p-trap somewhere.
Excellent!😁🔧
Good
Installed aav after p trap for a bathroom sink that gurgle when water would drain. It is still gurgling, should I add another aav before the trap?
Thank you。 Sir