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Waupaca wi crime rateOn both wood frame and CMU construction, the same wood roof trusses/rafters, sheeting and interior lumber walls are used. In the case of CMU homes, the second floor is usually built in wood frame for cost savings. The exterior of the wall has OSB or plywood as sheeting with a certain nailing pattern...
The energy efficient performance comes in large part from the polystyrene foam on the interior and exterior of ICF walls, which range from R-17 to R-26, compared to wood frame’s R-9 to R-15 walls. Also, ICF walls are tighter, reducing infiltration (air leakage) by 50% over wood-frame homes. 22. Are ICFs a green building material?