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Posted by Bob on May 31, 2006, 12:39 pm
> The shower in my master bath has a peculiar problem with drainage.
> About half the time, the drain will backup within a minute of turning
> the shower on, and the shower floor will fill up with about a half inch
> to an inch of water. The water drains pretty fast when the shower is
> finally turned off (~30 seconds). The other half of the time, the
> shower drain does not really backup at all, barely reaching the top of
> the trap.
> There doesn't seem to be a rhyme or reason for when this happens. I
> will take a shower in the morning and it backs up. 10 minutes later my
> girlfriend will take a shower and not have any problems.
>
> Any ideas?
It could be an air bubble trapped by the water flow. Try tapping your foot
over the drain, or turning it off/on (the drain) a couple times to clear the
bubble.
Bob
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