On March 16, 2011, I flew to Seattle for a three-day visit to Washington state. Although the main purpose of my visit was to attend the spring conference of Passive House Northwest, I devoted a day and a half to visiting Passivhaus buildings and construction sites in Seattle and Olympia. With the help of my gracious hosts, Dan Whitmore and Albert Rooks, I was able to see four Passivhaus sites and a large workshop where Passivhaus wall panels were being assembled indoors.
Because I packed in so many site visits and interviews in my short visit to the Northwest, it will take at least two blogs to report on my trip. Here’s the first installment.
Dan Whitmore is a Seattle builder who kindly volunteered to pick me up at the airport and offer me accommodations for my first night out West. On the way back to his place, we swung by the Phinney Neighborhood Association in Seattle to visit the Mini-B Passive House, a tiny cabin that now sits in a parking lot until the modular building finds a permanent home. The architect of the Mini-B, Joe Giampietro, met us there and gave us a tour.
The Mini-B — short for “mini bungalow” — was designed to meet the “detached accessory dwelling unit” requirements of Seattle’s building code. The city allows homeowners to install these small backyard buildings for use as guest rooms or mother-in-law apartments.
Giampietro wanted his Mini-B prototype to meet the Passivhaus standard. As he dove into the design process, he learned first-hand that the Passivhaus standard is much easier to achieve with a large building than a small one. Fortunately, Seattle’s climate is relatively mild, and Giampietro was able to achieve his goal — even though the Mini-B measures only 300 square feet.
Since high-performance triple-glazed windows gather more…