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New Mold Growth Index and Safe Double-Stud Walls: WUFI Pro Shows INTELLO Plus is Key

New Mold Growth Index and Safe Double-Stud Walls: WUFI Pro Shows INTELLO Plus is Key Double-stud walls have been regarded as a simple to build, low-cost, high-performance solution since the energy crisis in the 1970's.  (See our blog post The Double-Stud Wall Simplified: Low-Cost High Performance, and free CAD details)  Pack them righ … read more

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Yes, Unvented Roof Assemblies Can Be Insulated With Fiberglass - A WUFI Post

Yes, Unvented Roof Assemblies Can Be Insulated With Fiberglass - A WUFI Post And Not Just In Climate Zones 2B & 3B: Cold Climates Too A post on August 21st, 2015 on GreenBuildingAdvisor.com, Martin Holladay asked the question, Can Unvented Roof Assemlies Be Insulated With Fiberglass?  Martin's post focuses on the marketing of Ow … read more

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Insulating Historic Masonry Buildings Safely: How WUFI Can Help

Insulating Historic Masonry Buildings Safely: How WUFI Can Help With the rising popularity of Passive House and EnerPHit renovation in brownstone and brick masonry renovations in the US and Canada, the question comes up time and time again: What insulation levels are needed to create an efficient structure and how far should and can we push in … read more

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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 Cottage" - not only in terms of energy efficiency (Passive House certification is in … read more

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Keeping Sheathing Dry in High-R Double-Stud Walls - a WUFI study

Keeping Sheathing Dry in High-R Double-Stud Walls: a WUFI study Double-stud walls have become a popular and cost efficient way to build well-insulated envelopes: two 2x4's spaced apart easily makes a R-40+/10.5" thick wall. Such walls also include a thermal break and can be insulated with densepacked cellulose or fiberglass, both quickl … read more

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