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: 9013

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

Groups

Latest Activity

Profile IconSam Compton, Cameron Home Insulation, Seth Shoneman and 2 more joined Home Energy Pros
15 hours ago
Home Energy Magazine's blog post was featured
20 hours ago
Eric Kjelshus replied to Gregory Cisco's discussion Abandoning under-slab HVAC ductwork which fills with groundwater seasonally.
"In Kansas City a lot of "cardboard" for supply was used in slab on grade.  1950-1970…"
Friday
Richard L. Rue replied to Sonja Persram's discussion Energy Savings Guarantee for single family dwellings in cold climate??
"Try EnergyWise Structures (www.energywisestructures.com) They are a NASA spin-off company that has…"
Friday
Debra Little commented on Home Energy Magazine's blog post NREL Research Finds That 22% of New Homes Completed in the U.S. in 2016 Were HERS Rated
"The avg scores are interesting. Are there comparative numbers for previous years? I thought they…"
Friday
Home Energy Magazine posted a blog post
Friday
Robert Zockoff replied to Gregory Cisco's discussion Abandoning under-slab HVAC ductwork which fills with groundwater seasonally.
"Public water systems regularly "reline" the interior of existing 50 year old water mains…"
Friday

Photos

Loading…
  • Add Photos
  • View All

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service