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Old 12-01-2009, 09:43 AM   #1
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No drain trap in a 7-year old home - is this normal?


I noticed yesterday that my 7-year old home has no sink drain trap to keep gases from coming up the drain into the home. My wife had called to let me know that one of our kids dropped a small paintbrush down the sink drain, so I figured I'd remove the trap and get it out before it became a source of a clog. I get home and notice that there's NO trap!!
It's a double-sink, and the drains immediately join up, then take a 45* turn (there's a vent/clean-out cap here), travel for about 12", and then another 45* turn and into the floor they go. I can't easily check what's below the floor as I have a drywalled ceiling in the basement.
Isn't there a building code in Ontario that specifies a trap must be installed within X inches of a drain in order to prevent methane gas from making its way up the drain and into the home?
I'm a bit concerned now, although I've never smelled any foul odours from the sinks before. I also don't think I can easily reconfigure the drains under the sink to add a trap without some major work down there, because of the dishwasher drain being T'd into the drain between the 1st and 2nd 45* turns.
Anyone know about this code/requirement and have any advice for me here?
Thanks.

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Old 12-01-2009, 10:49 AM   #2
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No drain trap in a 7-year old home - is this normal?


yes the code requires the sink to have a trap within 24" of vertical run.

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Old 12-05-2009, 01:40 PM   #3
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No drain trap in a 7-year old home - is this normal?


Take the ftgs. loose above the floor and check to see if water is standing in the pipe.If so,there is probably a S trap between the floor and ceiling.
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