I am interested in sealing/closing the crack around perimeter of basement
floor where wall meets floor. Crack is hairline and water does seep
through it during heavy rains.
Part of our project will be to redo gutters and downspouts as well as
regrade around building foundation.
House is circa 1920's. Foundation walls and floor are poured. No idea
if there is drainage tile.
Will hydraulic patching compound work? How about a caulk?
Use something flexible like caulk. Anyhting you can use for exterior should
work here. If the hydrostatic pressure of the warter behind the wall is
sufficient, it will still find a way to push up the caulk and seep in. If
its not too wet, this should do the job for some time. The other
imprtovements to drainage will hopefully eliminate that anyway.
Figuring its old, moldy and dirty it has to be cleaned or nothing will
bond , muriatic acid will clean it, use a plastic broom to apply it
then hose it out, you need alot fresh air and a vapor respirator since
muriatic fumes. Hydraulic cement will work but wear plastic gloves or
you will get lime burn which can last all summer. If you have a sump
pump you should have drainage tile, look inside at the incomming
That is the first thing you should do and may well be the only thing you
need do. Do that first and see what happens. You may not need more.
Effective more means digging up around the outside of the foundation and
adding drains there to get the water out before it gets to the concrete.
you CANT seal out water, might as well install interior french drain,
to end the water problem permanetely.
in such a old home it wasnt original equiptement, and if it had been
added the patched floor would be noticeable.
go ahead and fix gutters downspouts etc, then when it doesnt fix it
100% get the interior french drain, which is faster cheaper and
easier to install than a exterior drain which may not work....
Why do you believe that getting the water away from the foundation is
not the best way to go? It is almost universally recommended as the least
expensive most effective of all procedures. Even if it is not sufficient by
itself, it is certainly the best first step towards reducing the problem.
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