Does Super-Insulation Make Sense in New Orleans?
A winning design for an energy-efficient house in the Deep South sparks a debate: Can more insulation make a house harder to cool?
More from greenbuildingadvisor.com
Passivhaus Homes are Extremely Tight and Energy Efficient
The house was designed to meet stringent Passivhaus standards for low energy consumption, but a GreenBuildingAdvisor reader comes across a comment suggesting lots of insulation might, under some condtiions, actually make the house harder to cool.
The reason? Internal heat gains. That is, heat thrown off by the refrigerator, lights, water heater and other sources would not dissipate as easily in a heavily insulated house when it’s too humid outside to throw open the wndows.
Although no one is trying to make a case for less insulation in new construction, the paradox is enough to generate a number of comments and is the subject of this week’s Q&A Spotlight.
Read the whole article at GreenBuildingAdvisor.com.