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INTELLO Airtight System Aces NBC Lab Test

INTELLO Airtight System Aces NBC Lab Test

INTELLO Airtight System Aces NBC Lab Test First interior air barrier system to be successfully tested to ASTM E2357 - Compliant with NBC of Canada part 5 and 9 Selecting appropriate materials and systems to form an inboard air barrier is a critical step in designing and building foam free, high-performance enclosure assemblies. Not o … read more

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Adhesive Bonds and Failures: What's Going On?

Adhesive Bonds and Failures: What's Going On?

Adhesive Bonds and Failures What's Going On? We use adhesives to form airtight and watertight enclosures. It is essential that the adhesive bonds are strong and lasting.... 50 years, 100 years, and longer. How do we know when we have the right kind of adhesion? What are the different ways a tape's adhesion will be able to provide us … read more

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5 Steps For Sealing Intentional Holes in Your Air Barrier

5 Steps For Sealing Intentional Holes in Your Air Barrier

5 Steps For Sealing Intentional Holes in Your Air Barrier A continuous air barrier is one of the defining design details of Passive House and high-performance building. The red line that many of us draw on blueprints to indicate the air barrier separating the interior conditioned space and the exterior environment, provides comfort, opt … read more

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Smart Vapor Control, Magical Thinking and Goldilocks

Smart Vapor Control, Magical Thinking and Goldilocks

Smart Vapor Control, Magical Thinking and Goldilocks Be sure to protect your building for its entire lifetime In an endurance test, it’s critical to have capabilities in reserve to handle the unexpected: And the life of a building enclosure is an endurance test. The greatest threat to a building’s longevity is moisture damage. Conseque … read more

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Leaky OSB: A Game of Chance

Leaky OSB: A Game of Chance Everyday at 475 we have dozens of conversations with builders all over North America. We often generate the ideas for this blog based on common trends, questions, and concerns... basically, things we find we're repeating. And it’s worth repeating and repeating: don’t depend on OSB for airtightness. Why? OSB … read more

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Hooray for Double Standards: Passive House + LEED Platinum in Quebec

Passive House + LEED Platinum in Quebec by Construction Rocket Inc. Hooray for Double Standards A view of the beautiful Springhouse, which is both Passive House and LEED Platinum certified. Photo credit: Construction Rocket Inc. Framing begins on the main structure. Photo credit: Construction Rocket Inc. The roof assembly was f … read more

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