Air Leakage

Hygric Buffering & Cellulose Wall Insulation

This is a two-part blog about hygric buffering, cellulose wall insulation, and moisture problems in high-performance buildings. Why not to install cellulose insulation in deep wall cavities Cellulose shrinks, slumps, and dries very slowly after wetting. Deep wall cavities are have more risk because the outdoor side of the wall is colder than shallower cavities. Voids left by …

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All That’s Old is New Again – Super-insulation then and now

John Krigger has practiced home performance and energy efficiency for more than 30 years. Over that time he’s collected a lot of research papers and articles.. We were doing some house cleaning recently and came across some of these older articles and papers in a filing cabinet. Many of them date back to the early …

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