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Other stories by Patrick Dundon

  • Can Fiberglass Batts Perform Well in Tightly Sealed Houses?

    I understand that fiberglass batt insulation can allow air to move through it and that this air movement degrades the insulation's R-value. Two causes I've heard about are wind-washing at the eaves and convective loops that can start in a wall cavity on really cold days and wick warmth from inside...

  • Q&A: Spray Foam for Foundations?

    Q: The specs for spray-applied urethane foam insulation say that it does not absorb water (hydrophobic). So why is it never used on the outside of foundations?