Joan writes from Portland, Oregon: "I have a two story house built in 1989. I have an issue with water in the crawlspace. I am trying to decide whether to just replace the existing 6 mil vapor barrier with 20 mil and air seal or go with a closed conditioned crawlspace. Is it worth the extra money to go with the second option?"

Answer: Yes. It should help eliminate your moisture problem and save energy dollars in the long run.