Building Performance

How to Treat Mold

Mold is a homeowner’s worst nightmare. Here's what the experts at THIS OLD HOUSE suggest homeowners do when they discover it. Read more

HVAC for a ‘Pretty Good House’

Homeowner Matt Mesa is looking to build a "pretty good house"--a home with above-code levels of insulation, but falling short of the energy performance or airtightness requirements of the Passivhaus standard. Here's what green building experts advised. Read more

Why R-value Math Doesn't Always Add Up

Adding up the R-Value of insulation combinations may seem simple enough, but the basic math may not add up properly in reality. In this article, building science experts battle it out over whether it's best to stick to the codes or get creative. Read more

Help Your Clients Prepare for Wildfire Season

California and a few other Western states are bracing for an intense wildfire season that is expected to start earlier than normal. This means that its time to help clients start thinking about protecting their homes. The people who can help the most? Roofers, deck builders, and remodelers. Read more

The Difference Between Air Barriers, Vapor Barriers, and Drainage Planes

There's widespread confusion about the roles of the materials used in construction. It's important that know when and how to use the different materials--and especially to know when to not use the term "vapor barrier." Read more

Fireplaces in Tight Houses

Fireplaces are often at the top of clients’ wish lists, but they can be a detriment to the building envelope of a new home—especially a tight house. Here's why. Read more

Cold Snap Tests High-Performance Homes

Many energy-efficient high-performance homes in the Northeast are so new, never really had been tested by extreme weather. Thanks to the recent Polar Vortex, they now have. Here's how they've done. Read more

Fortifiber L7 Flashing Doesn't Cut Corners

Fortifiber's L7 flashing comes pre-sized in convenient L shapes to more easily address and protect through-wall penetrations around electrical boxes, vents, and elsewhere. Read more

Transparency Movement Trends at Greenbuild 2013 Transparency Movement Trends at Greenbuild 2013

Transparency and labeling were key—and contentious—issues at the conference. Read more

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