Insulation & Air Sealing

How to Answer the "Are Tight Houses Bad?" Question

When talking to homeowners or trade contractors about energy efficient construction this question is inevitable. The answer: Tight houses are good because they lower energy bills and increase comfort. But there's a big BUT

Exterior Insulation Guide: Cold Climate

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Everything* you need to know about adding insulation to the outside of old homes with cold bones

The Psychrometric Chart: 7 Minutes of BS (Building Science)

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This chart explains how moisture behaves in the air as temperatures rise and fall—rainstorms, flooding, and glaciers in wall cavities are distinct possibilities.

Flood Resistance and Cleanup Guide

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Everything we've got (so far) on flood resistance, cleanup, and recovery.

Energy Star Checklist, Section 1: Overall Air Barrier and Thermal Alignment

Energy Star Thermal Bypass Checklist: Overall Air Barrier and Thermal Alignment

18 Videos, articles, and animations showing you how to get through Section 1 of the Energy Star Thermal Bypass Checklist. It is about the continuity between various components of the air barrier system and the thermal envelope.

 

Model Remodel Show: 4 MORE Energy Efficient Construction Tips

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Roof framing, window options, and a mechanical advantage add up to lower bills and a higher quality home

How Small a Hole Can A Mouse Squeeze Through? A Shrew World Record!

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Matthias Wandel has a pretty extensive history devising ways to trap mice. The winters are long in Canada, and Matthias seems to have no shortage of mice in his shop.

Low-E Glass Coatings: 7 Minutes of Building Science

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Low-e coatings screen infrared heat from moving through the glass, either inward, outward, or both

Four Smart Energy Upgrades for Compact Houses

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Simple upgrades to steps you take anyway can significantly boost the energy performance of a home

A Slick Transition from Foundation Insulation to Wall Sheathing

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Outside insulation is an effective way to keep heat in. The devil is in the details, such as this one

Think About Batts When Running Electrical Cable

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Your electrician can make the insulation work better and easier to install