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Q: We typically build energy-efficient houses with 1-inch foil-faced polyisocyanurate foam on the interior of our walls. But more than one customer has questioned us about the potential health effects of the foam. Their concerns seem to stem from the outgasing of chemicals, more than the potential...
Mortgages for energy-efficient houses
Tight construction is now standard practice, and though it makes the house more energy-efficient, it can create serious indoor air quality problems. Three energy specialists team up to explain how to test for tightness and improve ventilation.
Testing for tightness with blower doors
Q: I have heard that the R-value of fiberglass insulation drops when it’s compressed. But now insulation manufacturers are offering higher-density batts with higher R-values. What’s going on here?
Here’s a resource library for builders who want to build green but don’t know where to start.
Most central air-conditioning systems, new and old, fall far short of their rated efficiency. Here’s how to install a system for top performance.
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