I am installing an interior french drain system in 8 inch CMU block
wall basement which shows only very limited flooding ( only the recent
heavy rains in the 15 years I have owned the house) but there a
significant efflourescence on the walls . As I now want to finish the
interior of the basement I would like to also apply something on the
interior side of the block wall and slab to prevent moisture and would
like some recommendations . - Thanks.
About all you can do on the inside is cosmetic. A drain system can help
and now you have that. Making sure all the gutters dump their water well
away from the foundation and that the ground all around the house slopes
away from the home is your best defense.
You can put a membrane on the inside of the walls so that the water
that does get through is directed down to weeping tile under the
floor, but that sounds like overkill when you seldom have that big a
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