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In article <QeidnWyjGOQkvxnZnZ2dnUVZ_rWdnZ2d@netnitco.net>, Erehwon says...
>
>35 year old house has a basement with relatively minor seepage problems that
>I would like to stop. Generally just get a small amount of water running from
>walls to floor drain after a heavy rain but have had, on perhaps 3-4
>occasions over the past 10 years, up to several inches when the sump pump
>just couldn't keep up.
That's not minor - that's major.
>Inside walls have had a water proofing material
>applied (almost like a mixture of cement and paint) but last prolonged
>period of heavy rain caused some of that to start popping off. Options I have
>seen are trenching out around the basement and applying a sealer to outside,
>injecting a clay type material into the ground around the basement to seal
>it off, drilling holes in the bottom row of concrete blocks inside the
>basement and using short sections of hose to connect to a header and then
>the sump, etc. I would like to see if there's a consensus on the most cost
>effective (emphasis on effective) method that has actually worked for people
>to the advertising B.S. that I generally find on-line. I would also like to
>know which methods generally wind up being a waste of time and money. Will
>probably be selling in 5-10 years. Grading appears to be good, sloping away
>from house, and gutters have also been directed away from house.
>
Do you know the condition of your footer drains? What kind of soil do you have?
I have had similar problems, and the soil in my area is clay. The interior drain
system I had installed by B-Dry ten years ago has been very effective. The only
thing I regret is that there was no good place to have the water drain outside
by gravity, so I need to make sure the sump pump is powered through heavy rain
events. By the way, I repaired a foundation frost-heave problem on one corner
of the foundation and added drainage as well. Even though this was on the
downhill (slight slope) side of my house, the sump pump well has taken on
significantly less water. Water movement in some soils is complex.
Banty
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Re: Basement "Seepage" Solution
