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Insulation advice varies by climate

Homeowners shocked when forced to redo project

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Q: My husband is building an addition to our home in the San Francisco Bay Area and was told by the city building inspector that he installed the flooring insulation incorrectly. We installed the paper side facing the soil; he wants my husband to either remove the paper vapor barrier or turn the insulation around so the vapor barrier is against the floor. To do this we have to remove the netting that supports the insulation and reverse the insulation batts. From your article, it appears that moisture comes from the ground, not the building, and we installed the insulation correctly. Can you give us your opinion? A: Unfortunately, we agree with the building inspector. In a temperate climate such as the San Francisco Bay Area, the paper or foil-faced side of fiberglass insulation is always turned to the heated/cooled interior portion of the structure. You are correct saying that moisture migrates from the soil into the crawl space. We see how you could reasonably assume...