So now let's talk about how your foundation wall acts like a sponge. Water from the outside actually wicks through the concrete wall just like water through a sponge and this water fills up the hollow cores found in the concrete block. This water accumulates and stagnates causing your basement to smell. This accumulated water also robs the foundation wall of its structural integrity. And just like the weakest link in a chain, if the bottom course of block in your foundation wall is undermined, the rest of your foundation is now structurally weaker.
