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.