I am hoping to get some advise on the different types of crawlspace
waterproofing (encapsulation). Our house is old (1939) and sits on a
granite stone foundation, has a finished basement with a partial dirt
crawlspace. The house sits below street level so we have always had a
problem with water seepage but lately it is worse. Our basement is not
inhabitable right now because of the damp, musty smell (mold, bugs,
etc). I have heard of "vapor barriers" and concrete pouring but don't
know which of these is best. There are only two companies that I know
of in the Atlanta area: AquaGuard Basement Systems and A Better
Crawlspace. These are both expensive options. Does anyone have an
opinion, idea to help me decide?
You might investigate dealing with the water before it reaches the
basement / crawl space.
Look at surface drainage patterns:
Water from street. from roof should be directed away from house.
Planting can make a big difference. ( I once took up sod next to house
and water came into basement.)
A french drain around foundation might help, depending on what level
water is entering basement.
I have just sold an inherited house that was basically in a seasonal swamp.
The basement, once upon a time was gravel, but over the years the rocks
sunk below the clay/dirt, resulting in mud. The only solution we had was
to first of all minimize the water getting to the basement. That meant
digging out the foundations and replacing the french drains. Building back
up with properly draining rock matter and getting a 1 inch per foot slope
away from the house. Next was to break up the small amount of concrete
floor in the basement, put in drainage in the basement, around the
perimeter and through the middle of the large areas all draining to a sump.
Then cover the whole thing with 6" of crushed rock (1-1 1/2" fine) for
drainage and then concrete over that. Yeah, I am skipping the vapour
barrier and the insulation for a Norther climate.
The end product would have been a dry basement, however since there was
already rot happening in the joists, not to mention numerous problems - we
sold it as-is as quickly as we could.
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