During our natural walls class we insulated our barn' s walls with a couple different insulation systems.....straw bale, wood chip clay infill, and a light straw clay infill. But to really create a tight envelope, we also need to insulate our 'feet' and our 'head'. That is, our floor assembly and ceiling assembly are also in need of an insulative material to make this an energy efficient space for keeping warm in the winter and cool in the summer.
Blown-in cellulose insulation was our insulation of choice for the floor and ceiling cavities. Cellulose insulation is essentially a recycled newspaper material, treated to prevent mold and protected with a fire-retardant. At 80% recycled material content, a cradle-to-cradle product, and a high thermal performance, it is considered one of the 'greenest' insulation materials. For more information regarding the advantages of cellulose insulation over fiberglass batt, go to the following website: www.cellulose.org/green.html
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