P trap dry out

Users who are viewing this thread

JeffNC

Member
Messages
33
Reaction score
2
Points
8
Location
Raleigh NC
This issue has now come up for me a few times. I'm wondering how long it would take for P traps to dry out when not in use. Of course I know it depends on the air temp, humidity, and air flow. But more in general. Like 2 days, 2 weeks, or 2 months. I'm not sure if it matters the trap size. A sink drain holds less water, but the surface area is also less, so maybe it dries out about the same rate as a shower drain.

One person is telling me it happens at their house after 5.-6 days, but this seems pretty fast to me. Another person said it was happening in 2-3 days in a shower, and I told them that's too fast, so the problem is either a leak, or bad venting that is sucking it out. But in retrospect I don't honestly know.
 

Jeff H Young

In the Trades
Messages
9,792
Reaction score
2,473
Points
113
Location
92346
Im going out on a limb Im guessing weeks JeffNC I totally agree a shower drain aint going dry in 2 days barring 80 mph dry wind or other oddball stuff , bad venting plugged drains arent drying out those are differant issues
 
Top
Hey, wait a minute.

This is awkward, but...

It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.

If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.
I've Disabled AdBlock    No Thanks