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The Treehugger's Choice for Interior Airtightness Intro to the Original Smart Vapor Retarder: DB+ Pro Clima is known for airsealing systems that are key to optimizing building enclosures for energy, safety, and comfort. INTELLO Plus is easily the most recognizable product within that system. A hidden gem of the Pro Clima system is … read more

475 On-Site: Collective Carpentry in Bozeman, Montana Prefab Passive Construction in Big Sky Country As panelized enclosures gain popularity in Passive House circles, Rane Wardwell and Jan Pratschke, owners of Collective Carpentry, were early adopters helping to advance the industry. Their buildings are designed as complete syste … read more

Four Key Reasons for Building with a Vented Rainscreen When looking for the essential nature of construction, the architect Louis Kahn famously said: 'What do you want, brick?' Today, in looking at the nature of high-performance building enclosures, we re-imagine the conversation: You say to the building’s exterior, 'What do you w … read more

Project Spotlight: Raising the Roof by Bringing Light to New Spaces Project name: 19 Father Francis Location: Boston, Massachusetts, USA Project type: Top floor apartment of a 7-story building Date or time frame of construction: Skylights were installed and project was completed in Fall of 2019 Architect: Butz and Klug Builder: … read more

The Quantum Passivhaus Way: Combining Award-Winning Preservation With Pre-Fab Passive House Methods In Ontario Project name: Elora Schoolhouse - 37 McNab Street Location: Elora, Ontario, Canada Project type: Single-family home on heritage site, preservation + Quantum Passivhaus engineered PHI certified pre-fab panel system Date o … read more

475 Co-Founder Ken Levenson Appointed Executive Director of North American Passive House Network Ken Levenson and Floris Keverling Buisman founded 475 High Performance Building Supply in 2011 to help transform the way we design and build in North America: toward low-carbon, super-low-energy, safe, and natural construction guided by Pa … read more