For southern exposure, what do you think is the better glazing option: 1. U=.29, SHG=.49 or 2. U=.19, SHG=.37 ?
Both windows would be installed near Green Bay, WI, climate zone 6. The lower u-value window is vinyl and the other is fiberglass, but aesthetically, both are acceptable and equal for my tastes. The vinyl are manufactured by Wasco Windows (based near Milwaukee, WI) and the fiberglass alternative are Marvin Integritys.
The square footage of glazing along this wall is approximately 5.5% of the floor space. The finish floor will be a 5" concrete slab that will have no additional floor covering. The slab will be insulated to R-10 and the perimeter frost walls are insulated to R-20 except at the slab edge, where I only had "room" for R-10.
Posted Jul 7, 2014 6:35 PM ET
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