damp basement floor: do Dimpled Membrane or “garage tiles” with moisture channels work?
I have a 120 year old house in Southern New England, while the basement doesn’t flood, there is no moisture barrier under the slab. During heavy rain storms (once or twice a year at most) the walls of the basement darken, and there is some efflorescence on the walls. A couple of times I’ve had things on the floor that wound up with mold under them as well. So definitely moisture is weeping up.
I don’t see an easy fix here, short of excavating my foundation and putting down a moisture barrier. I know i will never be able to have a “proper” finished basement without spending more than what my home is worth, and I’m ok with that. I’m just trying to make my basement more habitable for a workshop and home gym.
My biggest fear is putting something down that will cause mold to grow!
2 options i’ve come across are using a dimpled membrane and then throwing down rolled rubber gym flooring on top. Or using click lock plastic tiles that are elevated and have channels for moisture, such as the norsk pvc tiles. What are your thoughts on these systems? I know there’s not much airflow under them, but i assume it’s enough to allow the moisture a path to escape? Do you think these will work for me?
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