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How do you build a mold-free basement in a new construction house?

Charmaine Herzig Published: Feb. 10, 2020, 7:32 p.m.Last updated: Feb. 12, 2020, 9:41 a.m.

I have a new construction project where one floor is subgrade. It has a cement wall on three sides that the contractor insured me was prepared to be mold resistant. He put special draining paper on it and put gravel up against it but it already smells like mold. It is just framed. Is it possible to finish the project in a way where I won't have mold issues? Thanks 

Responses (2)

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Charmaine Herzig Feb. 12, 2020, 7:44 p.m. Reply

Hi there! The house is located in the Silver Lake area of Los Angeles. Per code the wood does touch the top of the concrete wall that makes up the subgrade floor. It's pressure-treated. It's what we're required to do in Los Angeles. The material that is on the wall is drainage paper that is not really paper but plastic. It's meant for that purpose. I'm also curious what type of drywall to install in the sub grade floor. My contractor mentioned dens glass or dens armor. Any experience with any of these?