Flooded Cellar

Old 05-18-06, 06:26 AM
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Flooded Cellar

Heavy rains caused sewer backup thru toilet and sinks in the cellar. Are there backflow devices that can be installed? If so,does that just shift the problem to the first floor toilet and sinks?
Old 05-18-06, 06:52 PM
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There are backflow preventers for floor drains, but you aren't fixing the problem, only delaying the inevitable levee break. I would have the drain lines from the house to the sewer/septic checked out, as they should be able to handle outflowing water and not allow inflowing water to back up. You may have old terra cotta pipe that has been infiltrated with roots, broken pieces, etc.
Old 05-18-06, 09:04 PM
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If rainwater flooded the basement, I would guess that the storm & sanitary drains are one & the same, otherwise rain wouldn't have flooded the basement through the toilet. If your building drain was blocked and the rainwater off the roof backed up into it, you should have the building drain snaked or jetted (cleaned w/ high pressure water & more expensive) and make sure that it's intact.

If the sewer in the street was unable to handle the rain and that was what backed up into your basement, there are backwater valves that you can put inline, but they can be troublesome. They'll occasionally catch TP and need to be cleared. They should only be used for fixtures that are on the lowest floor, usually fixtures that are below the nearest manhole cover. But they will prevent a flood during an uncommon deluge.

Perhaps an inline slice or ball valve would be a solution, but that would require that someone is at home (and aware of the situation) to operate it.

Last edited by steve_gro; 05-18-06 at 09:35 PM.

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