Question about Deco Lav DECOLAV Chrome Polished Grid Drain With Overflow

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Odor from Decolav bottle trap

I had a Decolav bottle trap installed in a frequently used bathroom sink almost 2 years ago with no problems. About 2 months ago I noticed a sewer gas odor occasionally. Stack (inside and out) checked OK. Is there anything about the Decolav that I should know about?

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There really should be a trap with a bend in it on the system at somepoint to prevent odour ingress?

Posted on Dec 05, 2008

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We have the Kokols Wallmount Bathroom Pedestal Glass Sink Vanity Combo but the p-trap keeps leaking. How do we fix it?


Remove it, (Don't forget water will come out when you uncscrew it!!!) clean it thoroughly, especially the ends, clean and check seating of any rubber washers to make sure they are fitted correctly and not being distorted when the rings are tightened, reseat it with no force (it should sit naturally without having to force it in) and tighten rings. There are lots of videos on youtube showing how. If you cant stop it leaking buy a new trap. It's worth while looking very carefully for exactly where the leak is before you remove the trap, it might be coming from higher up. Repair Leaky Sink Drain Pipe

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Sewer gas smell in bathroom.


Sounds like you have an intermittently blocked vent pipe (the one that goes out through your roof). If there is gas pressure in the downstream sewer line and it can't get up through the vent, it could bubble up through your toilet or sinks. I would get up on the roof with a few jugs of powerful drain cleaner and dump them into your vents. You might also run a few dozen gallons of water down those vents after the drain cleaner has had time to work.
Good luck!

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How to unclogged a bathroom sink?


Best bet is to first check the stopper and see if it is gunked up. Thenasbestos_56_2.jpg If that does not work try one of THESE

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How to replace the trap for kitchen sink..there is a leak in the kitchen trap


open to drain pipes. remove the collars that hold trap on, sometimes you may need pliers or a pipe wrench to remove.install is reverse of removal the trap is there to contain the gases in drain pipe. if no trap. you will smell sewer water all the time. 1-1/4 for bathroom drains and 1-1/2 for kitchen sink drain.

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Clogged bathroom sink


Try removing the **** Trap under the sink, there are two nuts one on each side. put a pan under the sink to catch the waste water in the trap first. ext loosen the nuts with a pair of channel locks or a pipe wrench turn the nuts counter clock wise direction till the nuts are loose slide the trap down and empty the contents of the trap into the bucket. Use rubber gloves so you don't get sick from germs. If the **** trap is plugged use a coat hanger to push threw the trap to get whatever is plugging it out. Rinse in a different sink, If it has the rubber gaskets I would recommend replacing the gaskets. Install in reverse. Do not over tighten the nuts or you will have to replace the parts. the trap looks like 2 opposing J .

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Fowl smell in bathroom


Fowl smells related to plumbing can have several causes. Here's a few potential issues that you can check. If none of them solve the problem you may need to call a plumber.

1) Look at your pedestal sink drain connection. Is there an an elbow connecting to your drain or a P Trap? A p trap is a pipe shaped like the letter "p" (hence the name) and it prevents sewer gas from rising into the bathroom. **sometimes an apprentice plumber puts in a pedestal without a p trap because they are fairly difficult to install, and ALL fixtures need P traps. If there is no P trap, then you need to put one in. It will be a tight space, but you may be able to do it yourself.

2) Do you have a floor drain? If so, your sink will need a trap primer at the drain. Or you can pour water into the drain from time to time before it evaporates from the trap

3) If the smell is more of a sulfur type smell and it appears from running water in other places in the house, then it could also be due the type of tank you have if you are on well water

My offhand guess is that number 1 is your issue.

Without further info, those are some of my best solutions so far, but if none of these are potential solutions, then make the following tests

1) close the door to the bathroom and leave it for an hour or two. Return to the room. Do you smell sewer smell? Is it in the entire room or more concentrated in a certain area? If you don't have a floor drain and its everywhere, there could be a missing P trap from a fixture, a lose toilet flange, a cracked drain pipe
2) without running water, smell your drain. Does it have a sewer smell? Then the P trap either is not present or you need to clean the drain with a drain cleaner due to a list of reasons
3) run water. does the sewer smell increase or does one suddenly appear. Is the smell more a different odor than sewer. See if it is the water itself. If so, check other places. If they do not have the smell then you may have recently installed your sink and there is some smell related to the new valve. Then you would need to use it some more until it disappears.

Check the top list, though because I really think you're just missing a P trap

Sewer breaks below the slab, an open pipe somewhere, some issue with the water supply, are among some other issues but that depends on the test

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1 Answer

For years we have been dealing with sewer gases coming into the house. Sometimes it would get to the point of backup or the toilets would not flush. The city will come in and put the snake out well onto...


I once solved a problem like this -- it was the bathtub drain which had no P-trap on it. This could fit your situation -- when the drain is snaked there is less waste to produce odor. When the line gets sludge in it again, the odor returns.

No p-trap means the odor can come up thru the line with nothing to stop it.

Has anyone checked to see if all fixtures have p-traps? One way to investigate, if you can't see the plumbing, is to run drain water somewhere in the house and see if you can hear the drain water running when you put your ear to each of the plumbing fixture drains.

You would probably have to run the drain water from a fixture which is "in front of" the fixture you are checking so the water would run past it on the way to the main drain.

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4 Answers

Sewer Gas Smell Coming From Bath Tub


I can think of two possible solutions to this issue.

  1. The trap is installed incorrectly. The trap is the portion of the drain that is U shaped under the tub. The wastewater must come out of the tub and into the trap. From the trap it goes into the trap arm which must remain horizontal until it reaches the vent. This is very important. The vent must remain vertical until it is at least 6" above the rim of the tub.
  2. The sewer could be plugged. Not the tub but the main sewer line. When this occurs the water has no where to go so it forces the air in the line to take the path of least resistance and that usually menas the tub since the shower has a 2" trap. You may hear a bubbling sound when flushing. The drain may not be completely plugged so it would appear as an intermittent problem.
Hope this helps and please remember to rate this!

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