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Q: Do "vapor-retarder paints" really work? Can I rely on them as the sole vapor barrier in an old house? If so, can you recommend some brand names?
Q: I have heard that the R-value of fiberglass insulation drops when it’s compressed. But now insulation manufacturers are offering higher-density batts with higher R-values. What’s going on here?
Q: Puzzled by conflicting energy advice? We asked our panel experts to help out by summarizing the latest thinking on a number of thorny issues.