Intermintent Shower Drain

[ThePope78705]

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?

[GoHabsGo]

[e-mail] wrote in news:1149085989.254898.5020

Are you both using the same volume of water? Are you stepping on the drain hole while showering?

[No]

Could be a partially blocked vent. Bird nest? When bird in nest you get backup, no bird, no backup. Just a thought. if you have access to roof above bath look in with a flashlight and check for an obstruction. Be careful on roof.

Report back what you see.

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[Bob]

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

[ThePope78705]

We are both using the same volume of water. Thanks for the suggestions, I will test them out and get back with the answers.