Return to the Basements Forum | Post a Follow-Up

 o
mold in basement: drainage system too close to drywall

Posted by slrapp (My Page) on
Mon, Jun 25, 07 at 19:14

We have mold and/or mildew in our finished basement. One contractor said this is because the drywall that was installed after we put in a perimeter drainage system was placed too close to the drains. The drainage system works well, and, as a result usually has some water in it. Between the water itself and the increase in relative humidity between the drywall and the cinder block of the foundation, mildew has an ideal environment in which to grow. The contractor said he could retrofit the basement system drain with a humidity extraction system. This will create negative air pressure within drainage system and will exhaust humidity to the exterior of the house. DOES THIS SOUND PLAUSIBLE TO ANYONE? It kind of makes sense to me, but I don't know how a humidity extraction system would actually work. Anyone ever hear of that?


Follow-Up Postings:

 o
RE: mold in basement: drainage system too close to drywall

What does the "humidity extraction system" consist of? On the face of it, it doesn't make any sense to me. Maybe I'm missing something.

If your drainage system worked well, it wouldn't have water in it. It would be drained away to a sump or whereever it was supposed to go.

I expect you have a dehumidfier going 24/7 to keep humidity levels below 50% and you keep the basement windows closed in the summer. That's the best humidity extraction system I can think of.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Basements Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here