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Latest Articles

Guest Blogs

How Green Are Mass Timber Buildings?

This post originally appeared at Yale Environment 360. The eight-story Carbon 12 building in Portland, Oregon, is the tallest commercial structure in the United States to be built from something…

Musings of an Energy Nerd

More Bad News on Ventilation System Effectiveness

When researchers look at the effectiveness of ventilation systems installed in new homes, what do they find? To some extent, the answer depends on what area of the country you’re…

Green Building News

LED Streetlight Conversions Falter

Streetlights using light-emitting diodes (LEDs) are designed to last longer and use less energy than conventional lighting, but it's not working out that way in at least two U.S. cities.…

Building Science

Wingnut Testing of Soffit-to-Ridge Venting, Round 2

It has been a while since I blogged about my first round of Wingnut roof vent testing, so here is a reminder of the questions that the tests should answer:…

Green Building News

Living Building Challenge Gets an Update

The International Living Future Institute has released a new version of its Living Building Challenge and announced a new certification category called Core Green Building Certification. The Institute said that…

Featured Blogs

Musings of an Energy Nerd

Contemplating residential energy use

May 17
More Bad News on Ventilation System Effectiveness
May 10
Sandwiching Roof Sheathing Between Two Impermeable Layers
May 3
Why Is My Attic Damp?

Q&A Spotlight

An in-depth look at reader’s intriguing questions

May 13
My Windows Were Installed Incorrectly. Now What?
April 29
How to Wire for LED Lighting
April 15
Insulating a Raised Slab

Guest Blogs

Fresh perspectives from designers, builders, and industry experts

By Jim Robbins
How Green Are Mass Timber Buildings?
By Andreas Hoffrichter
Rail Makes Transportation Cleaner
By Maria Saxton
Tiny House Converts Benefit the Environment

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Construction-detail Drawing Library

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A collection of one thousand construction details organized by climate and house part (roofs, walls, foundations, etc.). Each detail can be downloaded as a PDF for printing or as a DWG to incorporate into your CAD software.

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Musings of an Energy Nerd

Musings of an Energy Nerd

Energy-Smart Insight for Builders and Designers Martin Holladay’s new book, Musings of an Energy Nerd, is filled with the in-depth information that builders, designers, and homeowners need to make homes more energy-efficient.

Insulate & Weatherize (EBook)

Renovation 4th Edition

For Pros By Pros: Graphic Guide To Frame Construction

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