Return to the Old House Forum | Post a Follow-Up

 o
Will insulating the crawl space help reduce cooling costs?

Posted by chillcatjen (My Page) on
Thu, Jan 24, 13 at 20:33

I'm thinking about insulating my crawl space but not sure it will be worth it.

I have a 100 year old, 2000 sq. ft house in new orleans that is about 4 feet off the ground. The floor is in excellent condition, but it's the hardwood and that's it. No subfloor, so winter is chilly. I got an estimate of $3300 for closed cell foam. But, considering that our winters are pretty short and mild, I want the investment to help with cooling costs as well. I have uninsulated walls and cellulose in the attic.

If anyone has an experience adding crawl space insulation, I'd love to hear what impact it has on your cooling costs. Everything I hear/see/read points to saving on heating costs, not cooling.

Many thanks in advance for your thoughts.


Follow-Up Postings:

 o
RE: Will insulating the crawl space help reduce cooling costs?

Try contacting your local gas and elec co. I believe they will have all the answers you need


 o
RE: Will insulating the crawl space help reduce cooling costs?

yeah...Entergy is going to help you out! LOL!
they do actually have a program in N.O. through
Entergy using local energy raters.
a little biased, but it is what it is.

below is a copy & paste link to LSU AgCenter's study
about insulating floors in homes with open crawlspaces.

http://www.lsuagcenter.com/NR/rdonlyres/D33F711D-DC4B-4E4C-9ED6-A97DCE9DB026/79806/pub3187insulatingraisedfloorsHIGHRES.pdf

I plan to insulate my floors with closed cell
3" everywhere...not average fill.
once floor in bathroom is replaced and
plumbing is finished.
your biggest battle is going to be getting
3" everywhere, and not just averaged fill.
plan to crawl under house before they
leave. take a piece of wire with inches marked
on it and a can of spray paint.
have them come back and touch up low spots.

knowing the foam companies you'll have to
deal with, plan on double checking the work
and not relying on their word that it is right.

understand that closed cell is about R-7 per inch
so 3" is R-21. actual R-values not quanitive values
are what is important.

best of luck.


 o
RE: Will insulating the crawl space help reduce cooling costs?

This was very helpful. Thanks!! The report mentions the termite issue . . . I hadn't even thought about the termite contract - I need to get with them before I do this.


 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 Old House 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.
  • Please review our Rules of Play before posting.
  • 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