Question:
Does the new energy code allow for insulated crawlspaces?
Answer:
Yes. Although codes have historically required ventilation in crawlspaces, recent research has shown that when properly designed and constructed, sealed and insulated crawlspaces can are suitable.
The website, www.energycodes.gov, includes information about energy codes for the United States. You can download the simple-to-use REScheck program (formerly MECcheck) which helps determine if you meet code and analyze ways to meet the code if you don’t. Their searchable Resource Center has construction details (such as insulated crawlspace details) and other useful information. An online help desk is available to answer any questions you might have.