Structures in the U.S. built to Passive House standards typically make use of a lot of materials and systems from Europe, where the uber-efficient, hyper-insulated system of building is more common. But now, builders have a door option for Passive House projects that’s made right here in the U.S. of A.
These doors come courtesy of Hammer and Hand, a builder with offices in Portland and Seattle that specializes in Passive House building projects. Ultra-efficient and 100 percent custom, the doors are designed by the company’s building science pros and will be built in the company’s woodshop in southeast Portland. Meeting the rigorous requirements of Passive House certification — which requires a super-tight building envelope with minimum leakage –these doors were intended to help project teams avoid paying a premium for their Euro counterparts, as well as avoid the carbon emissions associated with such imports.
The company’s first Passive House door was installed at their Karuna House project, which is pursuing PHIUS+ Passive House, Minergie-P-ECO, LEED for Homes Platinum, and net-zero energy designations. (And if that sounds like a whole lot of green certifications, it is: the Karuna House’s client is pursuing the project as a case study to shed light on the ways that the leading green building certifications and standards complement one another, and the ways that they may conflict.)
Hammer & Hand’s wood shop has made a name for itself in Portland with fine millwork for contractors, designers and homeowners. It specializes in high performance windows and doors that incorporate vacuum-insulated panels and triple-panel glazing for high thermal resistance and lower energy consumption.