It began with a goal so ambitious, it had never before been achieved.
The Karuna House in Yamhill County, Ore., designed by Holst Architecture and built by Hammer & Hand, aimed to earn three green building certifications, each demanding in its own right — Passive House (PHIUS+), Minergie-P-ECO and LEED for Homes Platinum.
With the help of PROSOCO’s R-GUARD® air and waterproof barrier products, the Karuna House has now received all three certifications and been dubbed the “world’s greenest” house.
The R-GUARD® FastFlash® system provided many elements the energy-efficient, high-performance project required – an airtight, watertight and vapor-permeable wall assembly.
According to our Aug. 15, 2012, update on the project, FastFlash® offered additional bonuses that no other product could, like its ability to go on damp surfaces, a key in the Pacific Northwest’s notoriously rainy clime, and its vapor permeability, which “lets those damp surfaces dry out, even after being coated with FastFlash® products.”
With a margin for error of virtually nil in the house’s air barrier, Hammer & Hand also applied PROSOCO’s R-GUARD® Cat 5 liquid-applied membrane everywhere, from the roof and parapets to the undersides of cantilevered decks.
For more on the construction of the Karuna House, check out this series of videos from Hammer & Hand on installing the PROSOCO R-GUARD® air and waterproof barrier system.