October 17, 2017 INTELLO X - the next generation in high performance

Introducing INTELLO X: The Smart Airtightness & Vapor Control Choice for Commercial Buildings

We’re very excited to introduce INTELLO X as the next generation – improved to take a beating in unforgiving environments, like the job site of commercial construction projects. As commercial construction has moved toward better airtightness – with mandated blowerdoor testing by several cities like Seattle and NYC – as well as the growing number of large projects […]

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October 2, 2017 Kaneji Domoto’s Lurie House before being air sealed with Intello. Look at all the firewood they needed to keep that leaky assembly warm!

Airtight Wright: Using INTELLO to Restore an Architectural Relic

  A few years ago, architect and Columbia professor Lynnette Widder bought the 1949 ‘Lurie House’ in the Usonia Historical District in Pleasantville, New York- a 47-house, cooperative community built on a site plan designed by Frank Lloyd Wright. The Lurie house, along with 4 other houses in Usonia, was designed by Japanese-American architect Kaneji […]

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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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August 16, 2017

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

Sarah Cobb and William Murray of Construction Rocket Inc. are dedicated to bringing about radical change in the building industry. As Passive House Certified Builders, they are committed to ensuring energy performance, even in harsh, challenging climates. And their recently completed Springhouse in Abercorn, Quebec, proves that Passive House design and construction doesn’t have to compromise […]

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August 2, 2017 openjoint

Open joint siding? Prolonged UV exposure on WRB? The Answer is SOLITEX Fronta Quattro

SOLITEX Fronta Quattro is making waves in the high performance industry as a specialty air barrier and weather resistant barrier (WRB). What’s driving the interest? Fronta Quattro offers exceptional UV protection, making it ideal for projects with so-called “open-joint” rainscreen cladding systems in which parts of the underlying WRB are permanently exposed to the sun’s rays. Other builders […]

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July 13, 2017 GUTEX_tips

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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July 5, 2017 Loose-fill or batt, Havelock Wool is a natural, comfortable and effective installation solution.

IDEAL Window Installation – Improving Best Practices

You bought high-performance windows, but is the install going to complement their performance or detract from it? The enclosure insulation, airtightness and moisture control should be continuous. But too often where the window frame meets the building we see breaks in insulation, air leaks and vapor traps – all setting the stage for discomfort, inefficiency and […]

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June 29, 2017 _DSC3103

Path Toward Perfection: A Beautiful High-Performance Home in Egremont, MA

Beauty We often talk  about the extensive benefits of high-performance buildings: lower energy costs, more durable structures, reduced maintenance requirements and healthier interior environments.  High-performance strategies can improve the lives of building owners and occupants. Beauty is not as quantifiable perhaps, but it can bring delight to life.  And there is nothing more delightful than working on projects […]

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June 14, 2017 cellulose_with_INTELLO-200px

Do More With Less: Your Dense Pack Netting Should Multitask

Dense pack insulation is a great way to insulate – whether it be cellulose, wood fiber (Thermofiber by GUTEX), sheeps’ wool (by Havelock wool), or fiberglass. It can guarantee gap-free thermal protection, filling all the nooks and crannies. But typical mesh-netting systems for dense pack insulation like Insulweb do one – and only one -thing: contain […]

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June 8, 2017 Flange_tape_guide_thumb

Flanged Window Install Guide for High Performance Enclosures

Sequencing For Making Flanged Windows Airtight Flanged windows are ubiquitous in American construction.  As we push toward higher levels of enclosure performance – with increased insulation levels, airtightness and vapor control – window specifications are getting more robust too. And while it can be a relatively straightforward thing to select a better window, it isn’t so readily clear […]

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April 14, 2017 smartwall3d

A Smart Enclosure Starts with Smart Walls: Green High-Performance Done Right For Our Sustainable Future

For thousands of years buildings were made with a keen regard for nature and historically building science was intimately attuned to natural phenomenon.  Then, the 20th century builders, with giant resources of energy and rapid scientific advancements tried to conquer the vagaries of nature.  Natural solutions were ignored and flaunted – they made up, down, and down, up – if they felt […]

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March 23, 2017 smartwallplan

Smart Wall Primer

The Smart Wall is an essential part of the Smart Enclosure and represents a return to fundamental principles of building science.  We leverage the basics of natural principles with highly selective technological innovation and manufacturing – working in harmony with nature, not in opposition.  The Smart Wall system is made of efficient, resilient and sustainable products, including HAVELOCK WOOL sheep’s […]

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March 13, 2017 wippro-front-thumb200x200

WIPPRO Klimatec 160: The Only Passive House Certified Attic Stair

Is your attic outside your thermal enclosure?  If so, access to that attic space should be carefully considered.   You want easy and comfortable access but also need to maintain the continuity of the airtightness and insulation layers.   Needless to say traditional attic stairs do not deliver the needed performance.  Until today, the best […]

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February 15, 2017 HYDROSAFE Graph INTELLO

How And When Smart Vapor Retarders Should Open Up — INTELLO’s Decade+ Of Safe Construction

Installing exterior vapor retarding layers such as asphalt roofs, flat roof membranes and OSB sheathing can create challenging situations in well-insulated walls and roofs. However, such assemblies can be safely built and insulated when using a smart vapor retarder and airtight layer on the interior – even in colder climate zones (4 and up). To make these […]

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February 14, 2017 airtight gap

Top Ten *NO* Eleven Air Barrier Failures

1. It’s not continuous! The mother of all failures. You don’t have an air barrier if it’s not continuous – it won’t be air tight. Many of the items that follow below are all causes of discontinuity. Like a balloon or a submarine – the continuity of the airtight layer must be sacrosanct. While discontinuity can […]

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February 12, 2017 foam_cracking_2

Foam Fails Reason #6: Inflexible and Prone to Cracking

It’s important that a building’s air barrier and insulation be dimensionally stable – or resilient to movement. Foam is neither. The curing process after spray foam is applied inherently entails shrinkage and hardening.  Not only can such shrinkage result in pulling back from stud bays and other connections – which often leads to gaps in the […]

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January 23, 2017 Vana_Moving

How to Stay Airtight When Buildings Move

Buildings move. Ensuring that your air barrier is resilient to movement is crucial to ensuring the longevity and performance of your building. Unless you’re building a structure using just one material (like superadobe), your building will consist of an array of different materials. In response to fluctuations in temperature and humidity, different materials expand and contract at […]

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October 13, 2016 SOLITEX Mento 1000 over plywood

Why SOLITEX is the best WRB solution

We often get asked how Proclima’s SOLITEX Mento compares to Zip and Tyvek for weather protection. Here’s a short answer: SOLITEX Mento ensures the most durable and long lasting walls. That’s because it provides a continuous monolithic protective layer that is completely waterproof and airtight, while allowing the most reliable outward drying potential to keep moisture levels safely low. Zip and […]

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August 17, 2016 WithoutServiceCavity

How To Stay Airtight Without A Service Cavity

Intro / Caveat As you may know, 475 recommends you use a service cavity on the interior of high performance, airtight building envelopes. We’ve enumerated the values of service cavities many times, in many ways. So to be clear, our stance on the subject remains firm: service cavities are the best case scenario, and the […]

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August 16, 2016 swinburn_headline

The Dream Project: High Performance, Right-Sized, Thoughtfully Detailed

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 know that he’s a talented and thoughtful architect focusing on single family homes in the Brattleboro, VT area. He is also a Certified Passive House Consultant (CPHC). One of Bob’s […]

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May 27, 2016 BlogThumb

How To Prepare For High Performance Windows

Windows might make you nervous. They’re often big and heavy, yet fragile. And in a high performance building, windows are the most expensive components. But that investment in great windows has a big payoff as well. High performance windows deliver on interior comfort and building efficiency – so you don’t have to rely on energy-sucking HVAC systems […]

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May 23, 2016 double_stud

The Double-Stud Wall Simplified: Low Cost, High Performance

Simplify. We know pushing standard code-minimum construction toward high performance is complicated. So we’re always looking for ways to simplify – to simultaneously reduce cost while optimizing efficiency and occupant comfort. [See our recent post on Breaking The “Upfront Cost Barrier”.] The double-stud wall is a well established method for creating a very economical, durable and […]

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May 16, 2016 Blowerdoor_test

New York State Mandates Blowerdoor Testing Beginning October: Our Reaction

Airtightness is for Everyone As a company built on airtightness, we have always pushed the building industry and building codes toward progressively tighter and tighter building goals. Because even at “just” 3.0ACH50, increasing the airtightness of the building envelope will make a huge difference for the comfort and the energy efficiency of projects built to current code. […]

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May 3, 2016 contegahfosbintello

Intro to CONTEGA Acrylic Adhesives

What Matters: Strength, Durability, Flexibility and Indoor Air Quality Buildings are often thought of as fixed objects. But in the real world, changes in the weather cause buildings to move – and we need to plan for the fact that they will expand, shrink, adjust and settle. If we are building an airtight building, such as a Passive House, we […]

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May 2, 2016 BD reading

Office Envy

Make way for the new Caliper Studio passive office! Located on the North side of Brooklyn, an area that is rapidly transforming from an old industrial center to a new hub of hip restaurants, nightclubs, and artist studios. Caliper’s new digs seems to be emblematic of this change. The firm, founded in 2003, by Stephen […]

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March 31, 2016 asphalt roof

The 8 Golden Rules for Foam-Free Unvented Asphalt Shingled Roofs

When insulating a wood roof structure, 475’s goal, as always, is to build in the most healthy, structurally sound and ecologically friendly way – thereby achieving truly high performance.  This means we generally try to avoid using foam above or below the roof deck (see our 475 series Foam Fails). With foam out of the equation, we […]

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March 28, 2016 JLC-LOGO

JLC Reports on Success of Foam-Free Unvented Flat Roof Assembly

475 enables more robust assemblies that are less toxic. Such was the case with the Whitchurch home in northern Vermont – working with the owners and their dedicated Passive House team at Montpelier Construction. The walls were a variation on the I-Joist outrigger configuration with dense pack cellulose between DB+ membrane inboard and SOLITEX Mento Plus […]

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