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Expert: - 12/17/2010


Question
How can the moisture be controlled between the concrete floor and raised floor?  The concern is mold and mildew.

Thanks

Bernadette

Answer
Bernadette, I guess I would need more information to answer the question.  Slabs on grade that will have finish flooring above them or on them should have a vapor barrier under the slab and/or a gravel capillary break if conditions warrant.  There are some sealers that can be applied to the concrete to reduce the amount of vapor transmission.  Visqueen will prevent the moisture from getting into the framing, but will trap moisture under it.

If you have an existing problem, you may need some form of ventilation or dehumidification to remove the moisture.  

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Dan Griffin

Expertise

I can answer almost all questions related to the total construction process. My expertise is in commercial construction, though I can field most any residential question. I have hands on experience in concrete, heavy equipment, masonry, all phases of carpentry, interior finishes, and I am fairly strong in mechanical and electrical.

Experience

I have over 20 years experience as a commercial carpenter and commercial construction superintendent. I have another 20 years experience in facility management for a major school district.

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My favorite hobby for he past 12 years has been singing bass in a The OkChorale men's barbershop chorus and the Mature Moments quartet.

Education/Credentials
I hold a Bachelor's degree in English and Math. I have completed many continuing education hours in the building trades. I hold a Master Carpenter card from the AGC, Associated General Contractors.

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