Basement / crawlspace insulation
user-6623302
| Posted in Green Building Techniques on
Basement of an addition has two levels. Most of the space is at normal height but about a third is raised to only about three feet high. Needed to do this because of the nearby ISDS. Energy auditors are recommending rigid foam on these “crawlspace walls” and not all the walls. Does this make sense?
Jon
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Replies
Jon,
1. What does "ISDS" stand for?
2. What is your geographical location or climate zone?
3. Building codes require basement wall insulation in Climate Zones 3, 4, 5, 6, 7, and 8. Homes in Climate Zones 1 and 2 are allowed to omit basement wall insulation.
ISDS = septic?
Zone 5A. Yes Septic. This is in a 15 year old addition, pre-code. This is a retrofit.
Jon,
In Climate Zone 5, you definitely want basement wall insulation. Here is a link to an article with more information: How to Insulate a Basement Wall.
Thanks, I was pretty sure of that. What I can understand is the auditors recommendation to only insulate the crawlspace portion. Maybe I should take what I can get but I want them to help pay for the whole thing.
Jon,
Maybe you should ask the auditors this question.