Do not insulate exterior walls of old homes
I was recently talking to a potential customer that lived in a home built in the 1930s and wanted to make his home more efficient. I of course explained that we would start in the attic - air seal and insulate, go the crawl air seal and insulate and then take a look at his duct work. After all of that would move to the exterior walls where a dense packed cellulose product would be best for his home. He had mentioned that he had always heard not to insulate his walls - would cause too many problems and too long of a payback. Referred me to this article:
Curious to hear people's thoughts and comments.
Posted Feb 9, 2011 2:45 PM ET
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