Building Science

Michael Chandler Blog Profile

Not all duct design manuals are created green

Posted on September 30, 2008 by Michael Chandler

Manual D is about comfort, not energy efficiency. Its requirement in LEEDLeadership in Energy and Environmental Design. LEED for Homes is the residential green building program from the United States Green Building Council (USGBC). While this program is primarily designed for and applicable to new home projects, major gut rehabs can qualify. -H makes green certification too expensive to justify the benefit.

I've been building solar and green for 30 years. I have built homes that Energy StarLabeling system sponsored by the Environmental Protection Agency and the US Department of Energy for labeling the most energy-efficient products on the market; applies to a wide range of products, from computers and office equipment to refrigerators and air conditioners. certify at 76% more efficient than code and score gold on our North Carolina Green Building Program as well as NAHB’s green building program, but I have never built a house that would qualify for even basic LEED-H certification. It doesn't seem likely that I will unless

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Life-Cycle Assessment is a Tool, Not a Silver Bullet

Posted on September 30, 2008 by Peter Yost

Are steel studs greener than wood? Is plastic pipe greener than copper? And is vinylCommon term for polyvinyl chloride (PVC). In chemistry, vinyl refers to a carbon-and-hydrogen group (H2C=CH–) that attaches to another functional group, such as chlorine (vinyl chloride) or acetate (vinyl acetate). siding green? A product's total environmental impact must be considered.

There are few green building topics that produce more frustration and uncertainty than claims about the environmental footprint of particular building materials. Life-cycle assessments seem like the perfect tool for summing it all up, but they fall short for many reasons.

Peter Yost Blog Profile

Do Window Shades Save Energy?

Posted on September 30, 2008 by Peter Yost

Yes, but high-performance windows and exterior shading may save more

While it's theoretically impossible for anything to actually save energy, interior window shades can indeed keep summer heat out and winter heat in. The real questions then become: How well do they perform, and under what circumstances?

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Energy Star Raises the Bar for Home Builders

Posted on September 30, 2008 by Daniel Morrison

New Standards Push the Energy Envelope 50% Past 2006 IECC International Energy Conservation Code.

A couple of interesting announcements from Sam Rashkin, the national director of Energy StarLabeling system sponsored by the Environmental Protection Agency and the US Department of Energy for labeling the most energy-efficient products on the market; applies to a wide range of products, from computers and office equipment to refrigerators and air conditioners. for Homes: new standards that raise the bar, and a new program, Advanced New Home ConstructionA proposed U.S. Environmental Protection Agency (EPA) program to promote the construction of “better than Energy Star” homes. The proposal calls for builders to comply with a “Builder Option Package” of measures including superinsulated walls, triple-glazed windows, ducts within the conditioned space, compact duct layout, a furnace with sealed plenums and a variable-speed energy-efficient blower motor, an efficient hot water distribution system, and a solar water heater or heat-pump desuperheater., for the best builders in the country.

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