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Question DetailsAsked on 4/21/2018

I have water come into my sunken living room when it rains hard or for several days what can I do to prevent this?

I live in Plano, Tx

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1 Answer


First and almost always by far the cheapest steps - stop the water from getting at the foundation with gutters and downspouts leading it away from the foundation, and surface diversion of any water running near the foundation.

Second choice commonly (because of cost) - sump pump, especially if the sunken room was built with underdrain pipes ready for that.

Third - if this is primarily water from away from the house running toward the house because it is in a low area, intercepting that flow away from the house (with surface drainage/swales or if running through pervious soils with french drains) to capture and remove it before it gets under the foundation.

Fourth - installing french drains around the foundation (and waterproofing the outside of the foundation while it is exposed).

Fifth - retrofit perforated underdrains under the floor leading to sump pump - though has the weakness that major rainfall events commonly coincide with power outages, so unless you have a pretty substntial backup power supply for the sump pump that can be a disappointment.

Sixth - though usually only when a really serious situation and continual or pretty much every rain and above do not solve it and flow rate is too high for sump pump to handle reasonably - and only if headroom is adequate - raise floor level higher.


Answered 2 years ago by LCD

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