Superinsulation in a box
One route to home energy efficiency is to make houses as air-tight as possible and add a lot of insulation, even on the exterior of the building. This model shows how this technique can create a wall with a R-value, or insulating value, of 45, which is very high. Two layers of insulating foam are added to the plywood exterior and packed cellulose is put into the wall cavity. All penetrations, such as those for electrical outlets, are sealed up to prevent air leaks. Preferred Building Systems manufacturers pre-fab superinsulated homes.
March 12, 2010 7:31 AM PST
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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