I live in a split-level home with a half basement that measures
22'X25'. I don't get water in the basement except for prolonged
periods of rain over time. and its usually only 1" in the corners of
the basement. My floor is finished and I really did not want to start
tearing up the floor.
Instead of jack-hammering the entire perimeter of my basement to
install a french drain, I thought of installing 2 sump pumps on
opposite sides of the 25 foot walls, midspan. One would be in the
furnace room, and one in the laundry room, both rooms of course are
not finished and tearing up the floor would not be a problem, not to
mention it would be a lot cheaper. My question is will this be just
as good as installing a perimeter french drain,
Depends where the water is coming in. If it is a spiked water table,
yes, they will help. But 'only floods in extended rainstorms' is
usually surface water, ponding outside the foundation, and penetrating
anywhere from ground level to basement slab level. Is there moisture
on the walls in these wet corners, or the white crystal deposits? I'd
look real hard at your outside grading and downspouts before I did
anything else. Are the corners heavily covered with plants, or would
it be possible to dig out the backfill down to where the leak is, and
reseal the wall?
Aside from proper grading, which is the first step, sometimes you have
to get it sealed. Pretty sure.
A 3-4 day rain just saturates the soil around the house and the water
will get in any crack.
If you can spot where it comes in you can a waterproofer to inject
whatever they use around the point of ingress.
Might have to just refinish the floors in the corners where the water
is coming in. Probably coming in up the floor where it meets the
The op never mentioned what "finished floors" means.
Tile or carpet is no big deal, wood may be.
Never mentioned if the wall are covered either.
A foundation wall crack leads water to the floor.
And they can be real hard to see.
I had a number of them sealed by US Waterproofing a few years ago.
About $250 a crack.
They inject some kind of epoxy.
I should have mentioned, the water problem I have is from the water
Otherwise my drainage and grading outside are good. Downspouts are
away from the house. No water ever pools up
My foundation walls are solid concrete, no cracks or any water
problems in the past.
On Sun, 26 Dec 2010 16:53:34 -0800 (PST), Mikepier
How are your basement walls finished? I suppose it's not just cinder
block or cement anymore.
I got rid of water in one corner of my basement just by piling the
dirt up differently, so rain water didn't run back to the wall.
Depending on your needs, you could do something like this all around
Also made sure the downspouts take the water away from the house. My
townhouse neighbor hadn't done that, so the girl who bought the house
asked someone who wanted both of us to put on another 6 foot pipe.
Probably didnt' need that much, but it's between the wood pile and the
fence, and I'm sure the extra distance does no harm.
A contractor will want to do both sumps at the same time, but if
you're doing it, I'd do one at a time. I'd consider if they might be
placed to help when the water heater leaks or the laundry sink plugs
up and the washing machine water overflows. Also, if you have all
rubber washing machine hoses and leave the water on between wash days,
the hoses will spring a leak one day. I use those covered in woven
As a last resort, I think there is some kind of surface mount French
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