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re: P trap help - how would you repair?

Posted on 3/21/24 at 11:16 am to
Posted by Turnblad85
Member since Sep 2022
1327 posts
Posted on 3/21/24 at 11:16 am to
quote:

Normally in houses the only thing that needs a 2" drain is a washing machine.




I've seen houses where even the lavs were p-trapped with 2" just like the OP has. I think the plumbers are thinking the oversized traps will help prevent clogging and maybe avoiding using slip-joint plumbing which all seems to be made as cheaply as possible.

They must think they are giving a premium option since it would've been easier to come off the 2" T with a 1 1/2 slip bushing and trap it "normally".

OP I don't understand why it won't seal unless cross threaded or damaged. It you don't want to cut anything out then you'll just have to try some sealants or tefon tapes. When/if you do find something that works, put a plastic tray under leak points and a water alarm in tray so you know if it starts leaking again.
Posted by baldona
Florida
Member since Feb 2016
20574 posts
Posted on 3/22/24 at 8:37 am to
quote:

I've seen houses where even the lavs were p-trapped with 2" just like the OP has. I think the plumbers are thinking the oversized traps will help prevent clogging and maybe avoiding using slip-joint plumbing which all seems to be made as cheaply as possible.



Plumbers don’t give a shite about future clogs for the most part if things were done ‘properly’ to them and to code.

It’s a lot more likely they had a ton of 2” leftover from another job and just used it up.

Newer bathrooms are 1 1/4” now. 2” is vastly overkill.

Op on a drain that’s low pressure there’s no reason you shouldn’t be able to get those two pieces screwed together and not leaking with pipe dope. If pipe dope doesn’t solve it then there’s a crack or another issue.
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