December 22, 2017

475 Tape Performance Lab: Tapes, Primers and Pressurization

Welcome back to the 475 Tape Performance Lab (aka our Brooklyn HQ presentation room). Check out last month’s experiment: Underwater Tape Test. We ask a lot of our tape. It airseals the junctions between the components in our high performance assemblies, helps ensures safety from mold, and lasts forever. A good tape not only sticks, adheres, and makes […]

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November 30, 2017

475 Tape Performance Lab: Underwater Tape Test

Welcome to the 475 Tape Performance Lab (aka our Brooklyn HQ presentation room). We ask a lot of our tape. It airseals the junctions between the components in our high performance assemblies, helps ensures safety from mold, and lasts forever. A good tape not only sticks, adheres, and makes the building airtight for years to come, […]

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November 22, 2017

Installing High Performance BEWISO Windows In A Historic Brooklyn Home

The solution for comfort, efficiency, and silence in a historic Brooklyn brownstone building Ben Leer, Daylighting Specialist from 475 High Performance Building Supply, demonstrates the details of a high performance install. Austrian-made BEWISO windows are airtight and approximately R-8. The BEWISO Anne window series was selected for this project. In this case, the homeowner wanted […]

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November 10, 2017

475 On-Site: Frack-Free Housing With Bright Common Architecture

We love the work of Bright Common Architecture in Philadelphia. Not only do they do great work, they have taken our banner of Foam-Free building a step further, developing the term “frack-free housing”. What does it mean to be frack-free? It means retrofitting without foam and petroleum-based products, and it means pulling the gas line. […]

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September 13, 2017

Installation instructions For Using INTELLO Plus In Wood Frame Buildings With Blow In Insulation

This video covers how to properly install INTELLO Plus membrane with blow-in insulation, such as cellulose, loose fiberglass, or Havelock sheep wool insulation. In these situations, INTELLO Plus serves as interior enclosure airtightness, smart vapor retarder, a moisture management system, and netting for packing blow-in insulation behind. Here is a list of the top install tips […]

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July 13, 2017

Quick Tip: Install GUTEX Boards + Battens In One Shot

Here’s a quick tip for installing GUTEX woodfiber boards with battens for high performance smart wall assemblies. We have a 2×4 wall with INTELLO Plus already installed on the inboard side as the air barrier system. We begin by pre-cutting battens which are positioned in line with the studs, and screwed through the first row […]

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June 14, 2017

475 On-Site: Chris Corson on Precision, Efficiency, And The Future Of Building

EcoCor’s Founder talks Passive House, Pro Clima, and his path through high-performance construction Chris Corson, of EcoCor High Performance Building Systems, talks to us about how he developed EcoCor’s signature panelized construction techniques and Passive House Institute Certified building assembly. Chris makes the powerful point that even as other industries have made quantum leaps in technology and precision […]

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March 20, 2017

475 Presents: High Performance Gets Real

What exactly do we mean by high-performance building?  What are some of the obstacles to building this way?  And when compromises have to be made, how can we make cost-effective choices and still construct a high-performance, low-energy, and maybe even Passive House building? In this presentation, we talk about the 6 key characteristics of high performance […]

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December 6, 2016

475 Presents: High Performance Historic Masonry Retrofits

30 Minute Webinar Video We recommend you download the companion eBook and CAD details for this presentation.   Description: The goals of historic preservation and energy efficiency and comfort often seem in conflict, as higher insulation levels can pose new risks to these timeless structures. Yet it need not be so. This comprehensive presentation discusses […]

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November 1, 2016

Notes From New York: Lessons From A Growing Market

Passive House is growing around the world.  Yet some regions seem to be moving farther, faster.  Why? 475’s own Ken Levenson had a chance to explore this question when asked to talk about what’s happening in the New York region as the keynote speaker at the recent Passive House Massachusetts Symposium in Boston.   What […]

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October 13, 2016

Low-Energy Commercial Retrofit for High-Energy Kids

Bright Common Architecture and Design Jeremy Avellino of Bright Common Architecture & Design gave us a tour of a beautifully designed play-based arts and enrichment center. Play Arts in Philly, which opened in September, features energy saving techniques inspired by Passive House in order to save on operational costs and provide high indoor air quality. […]

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September 9, 2016

In The News: Home Performance Industry using Intello Plus

A new energy efficiency rebate offered to homeowners in Bangor, Maine has been getting some press. And cutting edge home performance contractors are carving out a high performance niche in the competitive energy efficiency market. INTELLO Plus for Home Performance Retrofits One such contractor is Penobscot Home Performance, based in Bucksport, ME. They apply INTELLO Plus and other high performance […]

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September 6, 2016

Airtight In One Minute With EcoCor

Chris Corson and the crew at EcoCor in Searsmont, Maine are brewing a building revolution. Think of it like the modular building version of the Tesla factory. I essentially watched the majority of a building appear over the course of 3 days, built by 5 crew members with laser precision. Passive House, (nearly) foam-free, and built […]

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August 16, 2016

The Ark at the End of Long Island

Net-Zero + Resilient Meets Modern Design High performance building is becoming easier to accomplish with every passing day, and we’re in no short supply of aesthetic-driven building projects. But finding a projects that both perform while pleasing the eye is a rarity. The work of Bill Ryall and his team at Ryall Porter Sheridan Architects […]

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July 7, 2016

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 before we complete the walk-through; we can get a good sense for how airtight a project will be based on the look of the air barrier. Does […]

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June 24, 2016


A Pre-Folded Tape That Makes Perfect Corners   Based on Pro Clima’s proven tape technologies, TESCON PROFECT gives architects and contractors a new important tool to make airtight connections at inside corners, quickly and precisely.  TESCON PROFECT is delivered pre-folded in the roll of tape – with only one leg of release paper.  This allows for fast application, […]

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March 8, 2016

475 On-Site: Cornell Tech Details

Deborah Moelis of Handel Architects Shares Designs Of The World’s Tallest Passive House The Cornell Tech residential tower project has been widely covered in the media – from The New York Times to The Wall Street Journal,  Treehugger and The Atlantic. But those stories have only scratched the surface. As a company dedicated to providing in-depth information to professionals, we were hungry to […]

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February 26, 2016

Introducing COMPEGO

Pro Clima is rolling out a unique new high performance airtight tape called COMPEGO. COMPEGO uses an acrylic adhesive and is made from a stretchable polyethylene, with a thin threaded reinforcement that is sturdy yet capable of being torn by hand.  It has a release backing of siliconized paper for easy application. COMPEGO’s pressure activated, […]

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December 1, 2015

2 Simple Ways To Airseal Wires & Pipes

It’s great watching the Proof is Possible Tour and the Tiny Lab take shape. We have an addition to the information given by Corbett Lunsford in their last progress video. See our response video below.  

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November 19, 2015

475 On-Site: Net-Zero Upstate NY, Passive-esque House On A Budget

With Ben Freed of Prossimo and David White of Right Environments Ben Freed is emblematic of the people who catch the Passive House bug. First, we see them try everything out on their own home. They work through the details, feel the difference, get sold on the concept, and want to spread the word. Ben […]

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August 6, 2015

Pre-make Window Corners With TESCON Profil

One of the hardest parts to properly make a house airtight is making the air control layer absolutely continuous: to go around the drawing and through every detail without picking up the red pen.  This is especially true at the 3 dimensional connections of inside corners, which don’t necessarily announce themselves in 2 dimensional drawings. At […]

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August 5, 2015

475 On-Site: SURE HOUSE

The bright green future of the Jersey Shore will be on display at the 2015 D.O.E. Solar Decathlon – (UPDATE: This project won) 475 High Performance Building Supply is a proud supporter and supplier of the Stevens Institute of Technology 2015 D.O.E. Solar Decathlon team. Their entry into the competition is SURE HOUSE. Short for SUstainable […]

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June 3, 2015

475 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 Builders, has only recently burst on to the scene with some of the best imagery, branding, and social media in […]

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May 5, 2015

475 On-Site: Habitat for Humanity, Washington DC

An airsealing team of volunteers achieves 0.2 ACH50 Habitat for Humanity of Washington DC is proving itself to be a leader in affordable Passive House building. After incredible coverage from National Geographic (wherein they suggest the homes may be among the most Earth-friendly ever built), we had to visit to get the details from the builder’s perspective. […]

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April 14, 2015

Applying Extoseal Encors

Window sills see a lot of water. This is largely because glass is very waterproof, so all the rain that hits a window will end up on the sill. All that water needs to be directed outwards. For that to happen, first sills need to be proper pitched, especially if windows are set deeper into […]

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April 7, 2015

CompaCFoam Primer

  475 has been a vocal and outspoken proponent of the foam-free building. But as we’ve said, we also know that in the push toward foam-free construction, targeted and limited applications of foam still make sense. We always look for products that solve issues building professionals face when optimizing the building envelope. Not only does a […]

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April 2, 2015

Why New Yorkers Love Passive House

This video speaks for itself. We featured this project in a previous video – 475 On-Site: Historic Brownstone Passive House Retrofit in Brooklyn, NY. It is in process to receive EnerPHit certification with architect, Jane Sanders, and builder, Build With Prospect. So how does this work? Airsealing and insulation. These two measures increase comfort, while drastically reducing energy and outside […]

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March 11, 2015

475 On-Site: Northern Timbers Construction

Boxy But Beautiful Airtight Cottage After being totally blown away by some great conversations and great project visits in Vermont during the Better Buildings By Design Conference this February in Burlington, we were invited to stop to check out Alex Carver’s gorgeous, modern cottage project on Lake Champlain in Panton, Vermont, where he’s used Pro Clima and […]

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February 11, 2015

475 On-Site: Vapor-Open Straw Bale with Vermont Natural Homes

    We had the great pleasure of meeting with builder and owner of Vermont Natural Homes, Chad Mathrani, at his home under construction outside of Brattleboro, Vermont. Chad is building using a combination of straw bale insulation and blown-in cellulose, with airtightness provided by lime-stabilized clay plaster and a variety of materials from Pro Clima. […]

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October 24, 2014

60-Second Intro To TESCON VANA

Those who have worked with Pro Clima products to airseal a project know that rule #1 for any job is: get a big box of Vana. It’s our most adaptable and most commonly used tape. It’s the tape you’ll use outside and in to seal seams, join sheathing, and more, to easily create a long-lasting […]

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