24 Jul '11, 1pm

Lots of misconceptions about roof ventilation. Dr. Joe Lstiburek nails it, in my opinion.

Lots of misconceptions about roof ventilation. Dr. Joe Lstiburek nails it, in my opinion.

Lstiburek’s Rules for Venting Roofs By Dr. Joseph Lstiburek Building Science Fundamentals: Roof, Part 1: Ventilation Dr. Joseph Lstiburek talks about the not-so-controversial ways to maximize the efficiency and airflow of your roof and attic. Video Transcript: There’s been so much stuff said about roofs that you sometimes lose perspective. I’m going to start off by saying what might seem controversial but really shouldn’t be. This is a vented attic, and it’s probably one of the most unappreciated building assemblies we have in the history of building science. It’s beautiful. It’s hard to screw this up. For 20% of the effort, it gets us to 80% of optimal performance, and it works in hot climates, in mixed climates, the Arctic, the Antarctic, the Amazonian rain forest — it works absolutely everywhere. The value proposition of a vented attic, meaning the money that you invest...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/green-buil...

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