Construction has started on the new GO Transit bus storage and maintenance facility in East Gwillimbury, which will help meet the demand for increased GO express service. […]

Subtitle:  Environmental product declarations cover four categories of North American lumber products Images:  Environmental impact summaries for four types of North American lumber products are now available, the American Wood Council and the Canadian Wood Council said. The "environmental product declarations," or EPDs, list such things as the glo […]

Subtitle:  Just as in other states, the dispute centers on timber harvesting certification and whether LEED shows an unfair bias toward the Forest Stewardship Council Images:  A bill working its way through the North Carolina state legislature would prevent officials from seeking LEEDLeadership in Energy and Environmental Design. LEED for Homes is the reside […]

Subtitle:  A new report predicts the worldwide market for green construction materials will double in seven years Images:  A new report says the worldwide market for green construction materials will more than double over the next seven years to reach $254 billion by 2020. […]

Subtitle:  Researchers adapt Aeroseal duct-sealing technology for use on whole houses Images:  Builders who specialize in high-performance houses spend a lot of time tracking down and correcting air leaks. The process can involve a number of materials and sealants, such as special gaskets, tape, and caulk, plus a lot of time and attention to install them cor […]

Subtitle:  The Minnesota company would become the second U.S. supplier of certified windows, increasing options for North American builders Images:  Minnesota-based Marvin Windows and Doors expects to win certification shortly for a line of high-performance windows from both the Passive HouseA residential building construction standard requiring very low lev […]

Subtitle:  The state reaches a photovoltaic milestone four years earlier than it had originally planned and sets a new target Images:  Massachusetts has reached its goal of 250 megawatts of installed photovoltaic(PV) Generation of electricity directly from sunlight. A photovoltaic cell has no moving parts; electrons are energized by sunlight and result in cu […]

Subtitle:  City College of New York will host the second annual event Images:  The 2nd Annual Passive HouseA residential building construction standard requiring very low levels of air leakage, very high levels of insulation, and windows with a very low U-factor. Developed in the early 1990s by Bo Adamson and Wolfgang Feist, the standard is now promoted by t […]

Subtitle:  An Alaska couple sets a world mark with a blower-door test result far below the Passivhaus standard Images:  A Dillingham, Alaska, couple has claimed a world record for airtightness in a 600-sq. ft. home with 28-in. thick walls and a ceiling rated at R-140. According to the World Record Academy, a blower-door testTest used to determine a home’s ai […]

Subtitle:  This thermal image really is worth a thousand words Images:  Designers are accustomed to talking about high-performance houses in a language of abstractions: R-values, triple-pane windows, and blower-door testTest used to determine a home’s airtightness: a powerful fan is mounted in an exterior door opening and used to pressurize or depressurize t […]

Subtitle:  A $4 million grant will subsidize the construction of 25 net-zero energy homes, while a second grant will fund research into new net-zero technologies Images:  A newly announced $4 million grant will subsidize the construction of at least 25 net-zero energyProducing as much energy on an annual basis as one consumes on site, usually with renewable […]