Bio
Supplying essential knowledge and critical building components to industry professionals. 475 is North America’s exclusive supplier of airsealing systems from Pro Clima, daylight systems from Lamilux, and wood fiber board insulation from Gutex. Download our free Smart Enclosure details. Watch our product introduction videos. Sign up for our newsletter to get building science and product news.
Articles
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![Good Energy Haus as a Case Study and Beacon for Sustainability]()
Good Energy Haus as a Case Study and Beacon for Sustainability
After spending his career in Passive House design, Tim Eian is building his very own Passive House with an aim to bend the ear of local government.
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![Climate Action and The Spirit of 1776]()
Climate Action and The Spirit of 1776
As we celebrate July 4th let's celebrate what inspiration we can take from the founders in the face of the climate crisis.
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![Ten Golden Rules for Foam-Free Flat Roofs]()
Ten Golden Rules for Foam-Free Flat Roofs
With foam out of the equation, we examine how to avoid condensation, rot and mold in our structures.
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![How To Make that Old Leaky Masonry Row House Airtight]()
How To Make that Old Leaky Masonry Row House Airtight
475 takes a focused look at achieving Passive House levels of airtightness when undertaking historic masonry rowhouse retrofits.
