Tag: insulation

  • Five Types of R-Value

    Prime:  prime Subtitle:  There’s a lot more to insulation than the number on the package Images:  We talk about R-valueMeasure of resistance to heat flow; the higher the R-value, the lower the heat loss. The inverse of U-factor. all the time. “I’ve got an R-19 wall,” or “Code requires R-38 in my ceiling.” But what…

  • More About Global Warming and Insulation

    Prime:  prime Subtitle:  It’s not as straightforward as many seem to believe Images:  Well, I really stirred things up with my last article on insulation and global warming. My intention was to explain why Alex Wilson’s results could be doing a disservice to the green building community. In the end, I was rightly accused of…

  • The Misleading Numbers Behind the Global Warming Impact of Insulation

    Prime:  prime Subtitle:  An article purporting to quantify this effect has misinformed many in the green building community …

  • My Top 10 Building Science and Energy Efficiency Ideas of 2015

    Prime:  prime Subtitle:  A year-end review of the articles and ideas that made me think Images:  The year 2015 is almost finished. I’ve written 70 articles in the Energy Vanguard Blog and this one makes 49 here at GBAGreenBuildingAdvisor.com. I’ve been to a bunch of conferences and talked to a lot of people. A lot…

  • Is Your House Too Leaky Because of Fiberglass?

    Prime:  prime Subtitle:  Dirty fiberglass indicates a problem. Who’s to blame? Images:  I read a lot of stuff online about insulation and air barriers and other building science topics. I see a fair number of articles bashing certain products or materials. Sometimes it’s because the author sells a competing product. Sometimes they just don’t like…