I am working, doing audits, with a contractor who tends to make basements, crawlspaces into conditioned space. Especially when all or most of the duct work is in the crawlspace. He does this by covering the floor, side walls and piers with heavy plastic. He then uses rigid foam insulation on the walls, foams the joints and above and seals the vents and access hatches. Then we duct seal and re-insulate.

Has anyone been doing this for a while? Any unentended consquences?

Views: 9027

Reply to This

Replies to This Discussion

Be sure plastic is protected from mechanical damage by any future workers or residents accessing crawl space

Be sure to leave exposed strip for termite inspection. If termite bond is in place, be sure they are on board with details of the project - termites can tunnel, unnoticed through foam.

Beware radon

Monitor humidity

The above may sound as if I don't favor sealing crawl spaces, but in fact I do.

RSS

Forum Discussions

How would you insulate this roof?

Started by David Butler in General Forum. Last reply by David Butler yesterday. 15 Replies

Psychrometric Chart Training

Started by John Krochmalny in Training. Last reply by Mahendra Shah yesterday. 1 Reply

Dirty solar panels

Started by Evan Mills in General Forum. Last reply by Stacie Bagnasco on Monday. 1 Reply

Latest Activity

tedkidd replied to Bob Blanchette's discussion Tankless Water Heaters... has their time finally come?
"Yeah. Gas water…"
22 hours ago
Eric Kjelshus replied to Bob Blanchette's discussion Tankless Water Heaters... has their time finally come?
"With super cheap natural gas prices now, still worth going all electric?  Tankless needs a lot…"
23 hours ago
Stuart Langley liked Chris Clay's photo
yesterday
David Butler replied to David Butler's discussion How would you insulate this roof?
"Stuart, I wasn't considering the copula windows... yes, those would indeed need to be…"
yesterday
Stuart Langley replied to David Butler's discussion How would you insulate this roof?
"Well, @David Butler, you have seen the property more accurately than I have, but my impression of…"
yesterday
David Butler replied to David Butler's discussion How would you insulate this roof?
"@ Stuart,I don't think there's any concern about impact of 4" build-up on elevation…"
yesterday
Stuart Langley replied to David Butler's discussion How would you insulate this roof?
"So this building has a few issues with air leaks and air leaks have so much to do with discomfort…"
yesterday
Stuart Langley replied to David Butler's discussion How would you insulate this roof?
"John Hatfield has the right idea here for a new roof deck. Polyiso boards always need a good stout…"
yesterday

Photos

  • Add Photos
  • View All

© 2017   Created by Home Performance Coalition (HPC)   Powered by

Badges  |  Report an Issue  |  Terms of Service