The most recent blogs at Green Building Advisor

Fiber Optics for Daylighting

Posted on May 11, 2010 by Alex Wilson in Energy Solutions

Fiber optics, that miracle of modern communications, can also be used to deliver natural light to spaces deep in a building.

Green Building Tip: Test Your HVAC System

Posted on May 11, 2010 by Daniel Morrison in Green Building Blog

Even well-designed mechanical systems can become sources of indoor air quality problems (or can waste energy) if they are incorrectly installed, so it's important to make sure heating and cooling systems work as designed before the house is occupied. It's critical to test the systems (including duct work) before anyone moves into the house. That's almost always cheaper than dealing with the equipment after problems become obvious.

This testing — sometimes called "commissioningProcess of testing a home after a construction or renovation project to ensure that all of the home's systems are operating correctly and at maximum efficiency. " — should follow the "TAB" approach: test, adjust, balance.

7 Steps to an Energy-Efficient House: 6. Appliances

Posted on May 10, 2010 by Betsy Pettit in Green Building Blog

Editor's introduction: With energy prices rising again, many homeowners are planning energy-efficiency improvements to their homes. But most people are unsure of where to begin, and even seasoned builders don’t always know which priorities should rise to the top of the list. Betsy Pettit, an architect at Building Science Corporation, recommends starting where you can get the most bang for the buck.

Step 6: Buy 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. (or better) fixtures, appliances, and lighting

Best Construction Details for Deep-Energy Retrofits

Posted on May 7, 2010 by Martin Holladay, GBA Advisor in Musings of an Energy Nerd

A collection of experts working on deep-energy retrofits recently attended a brainstorming session to share design tips and propose topics for further research.

The conference, formally titled the “Expert Meeting for Details for Deep Energy Retrofits,” was held in Boston on March 12. The meeting was funded by the Department of Energy’s Building America program and hosted by the Building Science Corporation.

Water: The Backseat Driver

Posted on May 6, 2010 by Peter Yost in Water Efficiency

When we talk about the environment and environmentally responsible building, it’s almost always energy that takes the spotlight, with water pretty far down the list. But it’s not hard to see just how much of a back seat driver water can be:

We don’t have any substitutes for clean water and we use a ton of it every day. Actually, more like a ton and a half; the typical US household uses 400 gallons of water a day and that’s about 3200 pounds! (Source: EPA WaterSense)

Paint Peeling in Sheets: Why?

Posted on May 5, 2010 by Daniel Morrison in Green Building Blog

This house is down the road from mine. The paint job was new a couple of years ago. Before that the paint was in pretty good shape on all walls of the houses except this one: this wall looked like it does now. I suspected then that there was some sort of moisture problem going on. After they re-painted, and the wall re-peeled so quickly (within six months), I was sure that it wasn't poor prep or cheap primer.

This is the north side of the house (sunlight is visible because the sun is setting).

What do you think? Why is this paint coming off in sheets?

Read More:

Tubular Skylights Introduce Daylight to Dark Homes

Posted on May 4, 2010 by Alex Wilson in Energy Solutions

Much attention is focused on efficient lighting—from CFLs and LEDs to advanced controls. But for daytime lighting you can avoid electricity use altogether--with daylighting. Most daylighting is provided with windows or skylights (roof windows that are installed in the plane of the roof). For a lot of applications, there’s another, easier option: tubular skylights.

12th Annual NAHB National Green Building Conference

Posted on May 4, 2010 by Rob Wotzak in Green Building Blog

Visit the Green Building Advisor / Fine Homebuilding Booth

Once again, we'll be at the National Green Building Conference, this year in Raleigh-Durham, NC. Swing by the booth for a chance to talk to Pete (Technical director of GBAGreenBuildingAdvisor.com), Dan (Senior web producer for GBA and FHB), and Brian Pontolilo (editor of FHB). Also, expect Carl Seville and Michael Chandler to be milling about.

7 Steps to an Energy-Efficient House: 5. Mechanicals

Posted on May 3, 2010 by Betsy Pettit in Guest Blogs

Editor's introduction: With energy prices rising again, many homeowners are planning energy-efficiency improvements to their homes. But most people are unsure of where to begin, and even seasoned builders don’t always know which priorities should rise to the top of the list. Betsy Pettit, an architect at Building Science Corporation, recommends starting where you can get the most bang for the buck.

Step 5: Replace your furnace, boiler, or water heater

Using a Roof for Rainwater Harvesting

Posted on May 3, 2010 by Rob Wotzak in Water Efficiency

The coastal community of Small Point shuts down its water supply in winter, which forced Laura Sewall to find an alternative source of water. A well was one option, but the high mineral content in local groundwater would have required treatment. More than that, Laura did not want to interfere with the area’s delicate hydrological balance.

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