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Dewpoint and "cool" floor....

Posted by Dodgeman on June 29th, 2002 05:28 PM
In reply to sweating floor by the chucker on June 28th, 2002 02:03 PM [Go to top of thread]

The problem is when you have warm, humid air coming in contact with your "cold" floor, the moisture in the air condenses out and makes the floor wet. (the air dewpoint temperature is higher than the floor temperature.
There are two solutions if you don't dehumidify. Either warm the floor, or insulate the floor from the humid air. Putting ceramic tile on the floor will not help, as it offers no insulating value.
You could replace or cover the vinyl floor with bathroom carpeting. This would insulate the concrete from the air enough that it wouldn't get wet.
Otherwise, an in the wall space heater could be installed to warm the floor enough to prevent the problem.
I suppose you could put in ceramic tile with an electric floor heating system, but that could get expensive.
Remember you only need to heat the floor above the dewpoint temperature. This is probably only to the 70 to 75 degree range.
Good Luck!

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