The first certified PassivHaus in British Columbia is the Rainbow Prefab Duplex in Whistler. Designed by Marken Projects and built by Dürfeld Constructors and BC Passivehouse, this duplex uses 90 percent less energy for heating and cooling than a conventionally built home. The home was completed in early 2012 and was just awarded its certification from the Passive House Institute in Darmstadt this January and is built with locally-fabricated cellulose-filled panels by BC Passivehouse.
Each home in the Rainbow Passive House Duplex is 1,500 square feet and comes with an unfinished basement, three bedrooms, and two bathrooms. The home achieves a 90 percent reduction in energy use because of its super-tight envelope, high performance cellulose insulation, a solar hot water system, high performance heat recovery ventilation system, and a subsoil heat exchanger.
The Rainbow Passive House Duplex was built using a prefab panelized system with local materials by BC Passivehouse, which is Canada’s first manufacturing plant prefabricating a panelized system that adheres to the PassivHaus standard. Marken Projects and Dürfeld Constructors handled the assembly and construction (see a time-lapse video here).
“Showcasing affordable high performance building design and construction was one of the main goals for this project,” says Alex Maurer, director of Marken Projects. “At the same time using regional products from sustainable sources where possible was as important.”
Images ©Marken Projects