I am in the process of tiling a basement shower and have concerns with poor ventilation. I installed tile-backer and painted the backer-board with UGL paint as a temporary measure while in-laws visited last year. Since then I have noticed a slight mold problem along the floor where the BB and concrete floor meet. There is a small exhaust fan outside the shower for a 10 x 12' room that seems to be working okay. As an option, can the the air return duct for the heating/AC system -- which runs up the wall separating the shower from the family room -- be used as a vent?
Thank you for any info and suggestions.
Nov 16, 2013, 12:09 PM
You can't do double duty with the air return.
Since it's a basement, good chance you need to install a dehumidifier that can run 24/7. While your shower will add moisture (especially if the vent fan is not used) overall most basements will stay a little damp. Even a medium sized dehumidifier with a humidstat will keep things under control - as long as you have it rigged up to drain continuously.
Nov 16, 2013, 01:08 PM
dehumidifier as suggested.. sounds like condensation from under your floor prob..no plastic over the dirt under the floor as a vapor barrier
dehumidifier hooks up to the hot water...drains into a y-branch tail peice,,under a sink. This message has been edited. Last edited by: Frodo,