New construction sealed crawlspace R-value and air exchange question
In climate zone 2 what is the required R value if doing sealed crawlspace and insulating foundation walls instead of floor? Table N1102.1 lists crawlspace walls. Is this for sealed and when not insulating the floor? That value is 0 for my climate zone. Is that accurate or is that for vented?
Should an air exchange (in addition to air supply to crawlspace) be installed in the above scenario? I think the code asks for it but I read somewhere (possibly on here) that the positives are outweighed by the negatives. Is that true? Is it preferable to not install that?
Thanks for any help.
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