BuildingGreen Report

Blog Post

This simple system for recovering heat from wastewater makes a lot of sense—especially for families and commercial buildings that produce a lot of hot water.

September 26, 2012

Over the past few weeks I’ve written about various strategies to produce hot water efficiently. We’ve seen that tankless water heaters are more efficient than storage water heaters (though are not without their drawbacks), and we’ve learned that heat-pump water heaters produce two to three times as much heat per unit of... Read more

Blog Post

September 21, 2012
Sustainability might not come naturally to us, but maybe we’ll get past that if we can teach our children well. Minecraft helps kids in Kenya show how real places could be transformed.Photo Credit: FyreUK Sustainable design: the next generation

Apparently my kids are not the only kids on earth obsessed with Minecraft. And unlike my children... Read more

Blog Post

September 19, 2012
New federal regulations beginning in mid-April 2015 will require that larger electric water heaters be heat-pump models. It’s time to pay attention to this option. The GE GeoSpring heat-pump water heater is the quietest model I could find and the only one that's made in America.Photo Credit: GE Appliances

Last week I... Read more

Blog Post

September 14, 2012
Public facilities don’t have to be ugly, we can now hear air pollution, and the sports industry is going for the gold with green initiatives. What made the Katrina Cottages so popular? It's the Teddy Bear Principle, says Steve Mouzon, and it's useless to resist it.Photo Credit: Kent Griswold

Want greener homes? Embrace the cute

Wake... Read more

Blog Post

September 13, 2012
A relatively new type of water heater combines features of both tankless and storage water heaters. A.O. Smith's NEXT Hybrid water heater.Click to enlarge.Photo Credit: A.O. Smith

 

In last week’s blog I compared tankless and storage water heaters and explained why tankless water heaters often don’t make that much... Read more

Blog Post

September 12, 2012

Phobia or fatigue? When it comes to toxic chemicals, we all have our own way of coping with information overload. A free webcast helps you sort it all out.

Do you know where the most toxic chemicals are in building products? Vinyl sheet flooring is a top hazard, but far from the only one.Photo Credit: DIYadvice.com

Even if we try to... Read more

News Analysis

Demand for real estate in walkable neighborhoods is growing, according to new research.

September 11, 2012

A new report from the George Washington University School of Business finds compelling evidence that demand for real estate in pedestrian-friendly urban neighborhoods significantly exceeds supply. “DC: The WalkUP Wake-Up Call” introduces the term “WalkUP” as shorthand for “walkable urban places,” and concludes: “This research has found... Read more

Blog Post

September 7, 2012
Droughts are cracking foundations and cars are blocking crosswalks. Meanwhile, Martin Holladay debunks “greenest home on earth” claims. Sam Martin's "SkyCycle" concept would elevate bike lanes to new heights in London.Photo Credit: SkyCycle screen capture

Here it comes…the greenest home in America

We all see “greenest building on... Read more

Case Study

Science Experiment: A pro bono team tackles the Living Building Challenge and creates a home for hands-on learning.

September 7, 2012

In the summer of 2009, the board and administration of the Bertschi School, an independent pre-kindergarten through fifth-grade school in Seattle, weren't quite ready to begin the science building that was the last component in their long-term master plan. The year before, they had achieved LEED Gold certification for a facility for art, music... Read more

Blog Post

September 6, 2012
NYC made history this week by releasing a huge dataset of actual building performance—including some blank spots for buildings that didn't comply with the law. NYC is making history, but other cities are soon to follow.Photo Credit: Alex Wilson

This week New York City posted 2011 energy use data (PDF) for more than 2,000 large,... Read more

Blog Post

While they have higher efficiency, for most applications tankless water heaters don’t make sense.

September 6, 2012

There are two primary types of water heaters: storage and tankless. In this column I’ll try to explain the differences between these two approaches and offer some guidance on choosing between them. (There are also “hybrid” water heaters with features of both that I’ll cover in a future blog post.)

Storage water heaters... Read more

Case Study

Learning Lab: A scientific research facility in the Netherlands is designed as a test bed for technological innovations.

September 3, 2012

By Hattie Hartman

A trip to the Netherlands Institute of Ecology (NIOO) in Wageningen, just over an hour southeast of Amsterdam, transports visitors to another world. Set back from a busy road, which separates the institute from Wageningen University, the building is accessed by a 90-foot-long timber walkway that spans a pond full of... Read more

Blog Post

August 31, 2012
While India stands on the brink of modernizing its grid, angry Texans take up the charge against smart meters, citing privacy concerns. Some residents have taken to locking up their analog meters in cages, but anti-smart meter groups warn, "some installers have no scruples about cutting locks."Photo Credit: StopSmartMeters.org Holding up smart... Read more

Blog Post

Flashing and air barrier seam tapes get buried deep in our walls where we rely on long-term performance without monitoring them. Are they doing their jobs?

August 30, 2012

This is part of an ongoing series. Read all the Sticky Business posts here.

Performance testing of adhesives and sealants used in our weather barriers is improving due to new field-testing research, as we’ve written about before. However, the improvements in testing haven’t reached a critical... Read more

Blog Post

August 29, 2012
Those ubiquitous exit signs use a huge amount of electricity; a little-known alternative to conventional LED products offers surprising savings. An exit sign at Yale's LEED-Platinum Kroon Hall. Click to enlarge.Photo Credit: Alex Wilson

In the years that I’ve been writing about energy and energy conservation (longer... Read more

News Brief

August 27, 2012
By Erin WeaverThe U.S. Environmental Protection Agency (EPA) has announced 17 communities awarded technical assistance to expand green infrastructure. The communities will receive a combined total of $950,000 through EPA’s “Strategic Agenda to Protect Waters and Build More Livable Communities Through Green Infrastructure.”

The agency will hire... Read more

Product Review

August 27, 2012
By Erin WeaverLast year, EBN evaluated single-ply roofing membranes based on their life-cycle costs, environmental and health impacts, and energy efficiency (see “Better Choices in Low-Slope Roofing,”

EBN Oct. 2011). With about 22% of low-slope commercial roofing projects using metal systems, according to Scott Kriner, technical director of the... Read more

News Brief

August 27, 2012
By Erin WeaverThe U.S. Department of the Interior has published a “Solar Programmatic Environmental Impact Statement” identifying 17 prime zones for solar development on public land. The impact statement, two years in the making, evaluates 285,000 acres of public land across the Southwest for solar exposure, proximity to power lines, and impact on... Read more

News Brief

August 27, 2012
By Erin WeaverWith plug-in devices accounting for 15%–20% of the average office’s energy use, a new guide from the New Buildings Institute (NBI) outlines steps to cut office plug loads by up to 40%. The largest plug loads come from computers, monitors, and peripherals such as speakers; The Plug Loads Best Practices Guide suggests no- and low-cost... Read more

Product Review

August 27, 2012
By Brent EhrlichNearly 7 billion gallons of water are used in the U.S annually for outdoor residential applications, primarily for landscape irrigation, with up to 50% of this wasted due to overwatering, according to the U.S. Environmental Protection Agency. These numbers stand in stark contrast to the droughts that have devastated much of the U.S... Read more