"Any type of shading will help greatly. One of the biggest, if not the biggest, factor for high summertime attic temperature is the type of roofing material used. The most commonly installed roofing is asphalt shingles, which when exposed to the…"
"If anyone is still following this thread, they may want to check out David Goldstein's strident rebuttal to Arik Levinson:
How Much Energy Do Building Energy Codes Really Save?: How to Misuse Statistics
I agree with him that Levinson's…"
"As an architect and energy consultant working in 14 states mainly those states which are deregulated. We have found that strict enforcement energy called and do not necessarily result in significant savings however when a homeowner takes a proactive…"
"Crazy yes, but as Nehemiah and I noted above, Levinson's papers ignore natural gas.
However, I found a series of working papers by one of Jim Sweeney's grad students (now at U Chicago) that are more comprehensive, and seem to be where…"
"The point I see in this is, we are using more energy in our homes and not less. To reduce energy dependency as the number of homes go up we need to use less. It does not matter that people keep buying more and plugging it in. …"
"This is already mentioned in the comments, and it is not a bad thing to say it again. In short, you have to measure energy use / sf. And you have to take into consideration the typical appliances in homes then and now. Having said…"
""Efficiency" to me and building methods boils down to this heat-transfer model run showing a standard wall, and the same wall with insulation board added outside the sheathing and furring to hold the siding off to allow condensation drip,…"
"I think that critics and skeptics of efforts to improve energy efficiency in buildings are deluding themselves and others about the persistent problems of energy waste in buildings. Building codes exist to help assure the public that buildings…"
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