Ducting Systems and Air Ventilation - Basement Moisture

Doityourself.com community forum was created to provide answers to all questions related to home improvement and home repair. Doityourself community can help you find information about how-to topics on small fixes to large remodeling projects. With comprehensive how-to content and expertly moderated community forums DoItYourself.com makes it easy to tackle even the most complex home improvement projects.



PDA

View Full Version : Basement Moisture

ugfest
10-30-09, 01:30 PM
We have a humidity problem in our finished basement. I don't want to run a dehumidifier in there because they heat the room up alot and are noisy. Here is what I would like to do. Install ductwork with a grate in the wall near the floor elevation of the basement. Within the duckwork, install an in-line fan. Run the ductwork until it is vented outside. Hook up a humidistat to the fan so that it runs only a whatever hunidity level is set. The fan will remove basement air and air will be replaced from an vent from the upstairs. This seems to be what the expensive systems do such as Wave Ventilation. Anybody have any reason why this won't work. We also have a radon system, but I don't think that will be affected.

Thanks

airman.1994
10-30-09, 02:19 PM
Those systems are junk. You will be putting the basement under negative pressure. When you do this you will be bringing in outside air from every hole in your home. When RH is 70% outside that is what you will be bringing in. So your RH could be higher than it is now. You are in a green grass state so de-humidification is recommended to reduce RH under 55% for good IAQ.
GRIMKNOTME
11-02-09, 03:59 PM
Those systems are junk. You will be putting the basement under negative pressure. When you do this you will be bringing in outside air from every hole in your home. When RH is 70% outside that is what you will be bringing in. So your RH could be higher than it is now. You are in a green grass state so de-humidification is recommended to reduce RH under 55% for good IAQ.

I agree 45 to 55 % humidity is a comfortable climate you need to find out why you have so much moisture .