WUFI

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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The Miraculous Properties of Cellulose Insulation

Cellulose the Air Barrier According to some experts in our industry, cellulose insulation has truly miraculous powers. Many years ago we noticed that blower-door readings dropped significantly after we dense-packed the walls of an existing home with cellulose insulation. Before long cellulose was described as the miracle air barrier system for existing homes. People, new …

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