Cobb Hill Co-Housing Project (cont.)
Bob and Mark continue their tour of an under construction unit at the Cobb Hill Co-Housing project. Mark explains to Bob that the moisture barrier on the wall is reinforced polyethelene with a dense packed cellulose blown behind it. The insulation provides an R-Factor of R-25. The wall is a 2" by 8" using studs manufactured in Canada. These "open web studs", which are finger jointed spruce on the side with an OSB web in the middle, provide a very efficient use of materials at a cost comparable to an eastern 2" x 8" stud.
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