Case Studies

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

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

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...

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A Builders Perspective on INTELLO

A Builders Perspective on INTELLO

475 is excited to present this guest blog post by Brad Hankins, a designer-builder from Langley, WA. Long committed to sustainability, Brad knows the environmental benefits of high-performance construction. But...

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Vented High Performance Standing Seam Metal Roof

Vented High Performance Standing Seam Metal Roof

  SOLITEX UM Project Spotlight in Waltham MA SOLITEX UM is the solutionfor standing seam metal roofs SOLITEX UM from Pro Clima is a 4-layer, vapour open and waterproof membrane...

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Project Spotlight – Prefab walls for a comfortable, cozy, and quiet Passive House in eastern British Columbia

Project Spotlight – Prefab walls for a comfortable, cozy, and quiet Passive House in eastern British Columbia

Craig Toohey finds prefab walls for a comfortable, cozy, and quiet Passive House in eastern British Columbia Erik Olofsson of Erik Olofsson Construction has a vision of elegant and affordable...

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Cambridge MA - Small Urban 2-Story Gets a High Performance Upgrade

Cambridge MA - Small Urban 2-Story Gets a High Performance Upgrade

Here's a sweet example of a successful Deep Energy Retrofit (DER) with airtight, foam-free walls and high performance ductless ventilation. The designer and GC is Jeff Geisinger, a Boston-based architect...

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Waterbury VT Municipal Complex uses INTELLO Plus for Foam-Free Enclosure Moisture Control

Waterbury VT Municipal Complex uses INTELLO Plus for Foam-Free Enclosure Moisture Control

Waterbury VT Municipal Complex uses INTELLO Plus for Foam-Free Enclosure Moisture Control INTELLO Plus from foundation to roof: all interior walls and ceilings of this building include Pro Clima's airtight...

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I-Joist Simply Done in Greenfield, MA

I-Joist Simply Done in Greenfield, MA

If you haven't heard of Robert Swinburne Architect or Bluetime Collaborative yet, do yourself a favor and check out his website and blog. If you have followed his career, you...

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Tales From An Intello-gent Tiny House: 10 In-Depth Answers From An Enlightened Customer

Tales From An Intello-gent Tiny House: 10 In-Depth Answers From An Enlightened Customer

10 In-Depth Answers From An Enlightened Customer 475 is excited to present this guest article, our most extensive customer-driven blog post to date. We're featuring the makers of the Room...

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VIDEO: How To Hit 0.23 ACH50 In A Historic Masonry Retrofit

VIDEO: How To Hit 0.23 ACH50 In A Historic Masonry Retrofit

Behind The Scenes of a Super-Tight Retrofit Project in Fort Greene, Brooklyn Before we set up the blower door, before we check for gaps in the air barrier, and even...

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Office Reno: Caliper Studio in Brooklyn, NY

Office Reno: Caliper Studio in Brooklyn, NY

Passive Office, Brooklyn, NY by Caliper Studio Make way for the new Caliper Studio passive office! Located on the North side of Brooklyn, an area that is rapidly transforming from...

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Builder Spotlight: Maria Klemperer-Johnson of the Hammerstone School and Hammerstone Builders

Builder Spotlight: Maria Klemperer-Johnson of the Hammerstone School and Hammerstone Builders

The builders, architects, and building owners we work with never cease to impress us. Our customers bring a level of experience and deep commitment to high performance construction that is...

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Unvented Foam-Free Roof Retrofit With Dolphin Insulation

Unvented Foam-Free Roof Retrofit With Dolphin Insulation

There's a growing demand for high performance roof retrofits. For many homes it can be most practical and economical to improve the airtightness and insulation from the interior. Often the...

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Hanover, NH: Dartmouth College Dormitory Retrofit

Hanover, NH: Dartmouth College Dormitory Retrofit

Countless historic masonry buildings dot the American landscape, a large number of them falling under some form of aesthetic scrutiny prohibiting exterior insulation. The only option to make these buildings...

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Middlesex VT: Foam-free, WUFI-verified, and OSB-free high performance

Middlesex VT: Foam-free, WUFI-verified, and OSB-free high performance

Project Spotlight The town of Middlesex, Vermont, located just north of Montpelier, has put itself on the high performance building map. Leading the way is the new "Whitchurch Passive House...

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Ashfield MA: Deep Energy Retrofit (DER) by Quigley Builders

Ashfield MA: Deep Energy Retrofit (DER) by Quigley Builders

Quigley Builders recently completed a Deep Energy Retrofit (DER) project in Ashfield, MA, known as one of the Hilltowns of Western Massachusetts. I stopped by on several occasions to meet...

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Marlboro, VT: High Performance House with vapour-Open Walls and Roof

Marlboro, VT: High Performance House with vapour-Open Walls and Roof

A low-energy project by Michael Einermann, working with Kent Webster of Webster Construction, in Marlboro, VT, elegantly illustrates the simplicity of high-performance construction with vapour open walls and roof. A...

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Tight Historic Masonry Rowhouse Renovation by Caliper Studio

Tight Historic Masonry Rowhouse Renovation by Caliper Studio

Tight Historic Masonry Rowhouse Renovation by Caliper Studio On Prospect Avenue in Brooklyn, NY, Caliper Studio's gut renovation of a brick brownstone rowhouse used what has become the typical Passive...

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Rowe Hill: Foam-Free Deep Energy Retrofit (DER) by Maine Passive House

Rowe Hill: Foam-Free Deep Energy Retrofit (DER) by Maine Passive House

NOTE: Since completion of this project, 475 has replaced the DA Membrane with INTELLO X Rowe Hill House before renovation Jesper Kruse, founder of Maine Passive House, contacted us last...

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