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475 Goes to Germany
One of the great treats of being a partner at 475 High Performance Building Supply is the annual trip to the International Passive House conference – this year in Leipzig, Germany, April 17th and...
View Article475 On-Site: Karsten Tube Testing of Masonry Walls
On a recent visit to Jane Sanders’ EnerPHit Brooklyn brownstone retrofit, Floris took the opportunity to demonstrate the basics of Karsten tube testing. These tests are one of the ways to ensure the...
View Article475 On-Site: Bleu Nest in Ramsey, NJ
Larsen truss walls wrapped in Solitex make NJ’s 1st Passive House Darren Macri has been working in the high performance / Passive House building world for quite some time, but his company, Bleu Nest...
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BIM Objects Available for LAMILUX
Model your LAMILUX elements with BIM objects Image: LAMILUX 3-D model LAMILUX is one of the first daylight system manufacturers to offer free BIM object services to create an effective process for...
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What’s Nexxt for Lunos?
During my recent visit to Lunos in Berlin I was introduced to their newest high performance ventilation systems. 475 will introduce the following exciting solutions as soon as they are available: the...
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475’s eBook Series Continues: High Performance I-Joist Assemblies
475’s first ebook, High Performance Historic Masonry Retrofits, has been hugely successful. And we thank you for the support and feedback we’ve gotten. In light of that, we’ve been eagerly plowing away...
View ArticleCornell’s New Campus Breaks Ground and Passive House is the Main Attraction
This spring we said “Passive House Poised To Go Big.” Now we’re saying “Passive House Is Going Big.” On June 16th, Cornell Tech held a groundbreaking ceremony on Roosevelt Island. While the event...
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A Declaration of Independence from Foam Plastic Insulation (2015)
In the spirit of 1776, 475 High Performance Building Supply is proud to reprint an update to our Declaration of Independence from Foam Plastic Insulation, first published for July 4th 2013...
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5 Reasons Pro Clima Airtight Tapes are Best
You have a choice of air sealing tapes, so why choose Pro Clima? With five solid reasons making the case, it’s easy to say Pro Clima tape is the best: Reason #1: Pro Clima Tapes Have The Best Stick...
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What We Mean By “Permanently Airtight”
You may have seen us refer a Pro Clima tape or adhesive as ‘permanently airtight’. It’s important we be clear about we mean, because it’s one of the details that sets Pro Clima tapes apart from the...
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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 homeowners...
View ArticleIntroducing “Question of the Week”
One of our main goals at 475 is to stimulate conversation on high performance building practices, philosophies, products, and people. It’s what we feel is required to drive the market forward, and...
View ArticleQuestion of the Week – July 10, 2015: Lunos and REM/rate
This week’s question: A HERS rater’s quest to understand how to model the Lunos e2 and eGO units in REM/rate software. “Hi, I’m a HERS Rater and need to model Lunos e2 and eGo units in REM/rate...
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Why The Vapor Curve Matters
With vapor variable materials, your mileage and protection will vary Intelligent membranes, or smart vapor retarders can help prevent condensation in enclosure assemblies (walls and roofs) in winter,...
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Question of the Week – July 17, 2015
Welcome to the second installment of our Question of the Week Blog Series! **Please note that in republishing our question of the week, we sometimes edit the text of the original question and response...
View ArticleQuestion of the Week – July 24, 2015
Question of the Week – Part 3. This week, we bring you a question from an engineer in New Hampshire. The question: “I am thinking of using 3” “roxul comfortboard is” on the exterior of an older...
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Metered New York: Making Building Energy Data Useful
In 2009 New York City instituted mandatory energy use reporting for all buildings over 50,000 sf – initiating a potential windfall of useful information to better understand what our big buildings are...
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The Service Cavity – Making Airtight Construction Easy
We know that the importance of airtightness is second only to keeping the rain out. This is because airtightness greatly effects indoor air quality, thermal comfort, and energy efficiency – while...
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Question of the Week – July 31, 2015
We hope you all had a productive, safe, and successful July – we continue to thank you for your support, insight, and enthusiasm for the future of high performance, low carbon construction. The...
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New 475 eBook: High Performance 2x Framing
This free details guide is the third in the 475 ebook series 2x wood frame construction is very common and typically provides poor performance. This free ebook illustrates how we can transform the 2x...
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