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Editor's Notepad

Editor's Notepad

The Goldilocks Approach to Tight Houses: Is There A 'Just-Right' For Leakiness?

comments (1) August 13th, 2010 in Blogs

Sealing leaks in the building envelope, along with a blower-door test to confirm the results, have become accepted parts of energy efficient building. Air leaks add up to significant energy losses, and they can carry substantial amounts of moisture into roof and wall assemblies, risking mold and decay.

The flip side of tighter houses is the need for mechanical ventilation, and that inevitably leads to higher construction costs.

In this week’s Q&A Spotlight from Green Building Advisor, an energy retrofitter with a limited budget wonders whether all houses must bear the added expense of a ventilation system. Is it possible, she wonders, to build to somewhat less stringent air-sealing requirements and bank on leaks through the building envelope to meet fresh air requirements?

Read the full article, Do All Houses Need Mechanical Ventilation? at GreenBuildingAdvisor.com


posted in: Blogs, energy efficiency, green building, insulation, weatherizing
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Comments (1)

user-5440849 user-5440849 writes: The first time I heard about sealing a house to a degree of air tightness was about ten years before I retired. It was the idea of having to add an expensive mechanical device to pump fresh air into a building you just spent a lot of money and time keeping air out of that sealed the deal for me. The problem of getting fresh air into a home can be easily and cost effectively solved. Open a window.
Posted: 8:38 pm on December 19th

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