We recently had an [email protected] dealer tell us it was not necessary to spray more than 6 inches (they sprayed an average of 6 so it went from 3-8 inches) in a 2 x 10 cathedral rafter because anything over 5.5 inches was ineffective and wasted. The brochure states 3.6 per inch but they said the factory said “it works as good as”. I called another [email protected] dealer and they confirmed this practice. The building inspector turned it down based on the required R-38 in the area. At 3.6 per inch which gave us an average of R-22. The dealer and [email protected] manufacturer could not back it up so they came back (four months later) and re-sprayed to get R-34 which the inspector accepted. I get mad when I try new products and the manufacturer can’t back it up with the inspectors before they sell it.
By subdividing this property, a family was able to build a smaller and more accessible cottage for aging in place.
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