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Latest Articles

Musings of an Energy Nerd

Five Rules for Wall Design

An architect recently told a friend of mine that he was designing a flash-and-batt wall with the spray foam insulation installed on the interior, and the batt insulation toward the…

Building Science

Pete’s Puzzle: Greater Air Leakage After Spray Foam

Here's a funky, but cool little timber-frame house, built in 1987: Being a full cathedral timber frame, the roof deck provides both structure and interior finish with all the rigid…

It’s Not That Hard

How To Talk About Building Science

In case you didn’t suss it out, the name of this blog is meant facetiously. Green building really isn’t easy, and it’s been a long road with a bunch of…

Guest Blogs

Urban Rustic: Completing the Wall Assembly

Editor’s note: This post is one of a series by Eric Whetzel about the design and construction of his house in Palatine, Illinois, a suburb of Chicago. A list of Eric’s…

Green Building News

Trump Budget Attacks Familiar Targets

It's a new year, and the Trump Administration's proposed federal budget has a familiar ring: more for defense, less for energy research and the environment. The proposed 2021 budget, which…

Featured Blogs

Musings of an Energy Nerd

Contemplating residential energy use

Q&A Spotlight

An in-depth look at reader’s intriguing questions

February 10
Wanted: Windows for a Northern Retrofit
January 27
Details for Insulating a Slab Perimeter
January 13
Is Air-Sealing "Mostly BS"?

Guest Blogs

Fresh perspectives from designers, builders, and industry experts

By Eric Whetzel
Urban Rustic: Completing the Wall Assembly
By David Goodyear
Flatrock Passive: It's a Wrap
By Laurie Stone
Decarbonizing Buildings for All

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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)

For Pros By Pros: Graphic Guide To Frame Construction

Renovation 5th Edition

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