Durability of Timber Block’s Panelized Wall System
Hello, I am looking into Timber Block wall construction method.
It is described as a “modified SIP panel” with an alleged R-value R-30 to R-36. The insulation used is closed-cell polyurethane foam with a stud every 24 inches. The interior and exterior OSB sheeting are replaced by Eastern White Pine 7” tall sections (“blocks”) which are stacked and joined with adhesives and wood joinery, then pre-stressed under 5000 lbs. of pressure. The company provides a 15 year warranty but I wonder about the durability of such assembly. There is no rain screen/drying cavity or water barrier protecting the exterior white pine other than stain and paint. Also not sure how the wall can reach R30 with wood studs
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