Reshaping the Built Environment Passively
The Passive House concept gained a great deal of traction over the past year and the 2010 Passive House Conference, which was held in Portland, Oregon in November, was proof of the growth and interest. The attendance grew from 250 last year to 350 this year.
It is clear from the growth of the conference that building professionals in the U.S. and Canada are beginning to gravitate to the Passive House Standard. The primary goal of Passive House technology is to reduce your heating and cooling load so that very little energy is needed to maintain comfort.
The people who came by the CertainTeed booth were much more knowledgeable about passive house technologies and had practical experience with regard to designing and constructing passive homes in all parts of the U.S. That was a significant change from previous years.
CertainTeed remains the only large building materials manufacturer sponsoring the Passive House Conference. The Passive House Institute has created a Passive House Alliance which will work closely with the Institute to promote Passive House building energy efficiency standards and construction in the U.S. A grassroots effort like this could have significant impact on adopting standards that truly support energy efficient building.
Attendees were very interested in Saint-Gobain’s Isover Multi-Comfort House strategy. This passive house concept has been very successful in Europe. There were several colleges and universities at the conference and we took this opportunity to talk with them about the Multi Comfort House Student Competition which invites teams of architecture and engineering students from around the world to compete in a passive design competition. Philadelphia University has participated in the past and the hope is that other U.S. colleges and universities will consider participating in the 2011 competition.
It was good to talk with designers who are using CertainTeed Optima® insulation with our Membrain™ smart vapor retarder in very deep cavities using TJI joists to achieve the insulation levels needed to meet Passive House standards. We have conducted hygrothermal analysis to assist designers who are using this system.
One of the notable speakers this year was Dr. Robert Hastings, architect and energy consultant from Austria who gave his perspective on this trend. Dr. Hastings has been involved internationally in sustainable building and solar energy since the 1970’s when the first wave of concern regarding energy consumption hit the mainstream. Unfortunately, the progress that was made in the 70’s was quickly abandoned once oil became readily available again.
Let’s hope that this groundswell will not be abandoned as in the past. As a nation, we need to continue to move toward energy independence.
Stan Gatland is Manager, Building Science Technology for CertainTeed Corporation