[Greenbuilding] insulating around windows... best practice

[Alan Abrams]

I've heard about but never tried Tremco expanding foam tape.  It comes off
the roll very thin, and sloowwwly expands.  You apply it to the window
perimeter, and you have a few moments to slam the window in place, and
level and square it up, before the Tremco swells to seal the gap.  If you
run into a problem with the opening, or have to stop and take a leak, the
foam expands larger than the opening, and you have to scrape it off (at
what, a buck a foot???) and start over.

AA


On Thu, Sep 5, 2013 at 3:00 AM, Reuben Deumling <9watts at gmail.com> wrote:

> I like backer rod. My method has evolved into stuffing the appropriate
> diameter backer rod from the outside and from the inside around the
> perimeter of the window. Done carefully I convince myself that I'm creating
> some dead air space in between the two foam layers.
> Are there better ways of doing this?
> I am aware of and used to use a foam gun. But I never can seem to make
> sure to clean the gun when I'm done and so the next time I have to buy the
> expensive acetone cleaner and take the damn thing apart again. Which is one
> of the reasons I've switched to backer rod.
>
> Thanks.
>
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-- 
Alan Abrams*
**certified professional building designer, AIBD
certified passive house consultant, PHIUS*
*certified passive house builder, PHIUS**
*Abrams Design Build LLC
*sustainable design for intentional living*
cell     202-437-8583
alan at abramsdesignbuild.com
www.abramsdesignbuild.com
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