13 reasons why foam fails?
Jetson Green just reprinted some blog content from 475 Home Building Performance, here is the Jetson Green post:
and here is the original from 475:
So, um, are any of these assertions valid? As far as I knew, the only drawback to spray foam (closed cell) was the blowing agent. The chemicals are not great for the environment, but they are encapsulated in the foam itself. I know there is a debate about the benefits/risks/unknowns, but the rest of this list has me scratching my head. Are they talking about closed or open cell foam???
Maybe I should just ignore this, but our clients may read this and we should be prepared to agree or refute these assertions.
Here are the 13 things:
1.) Dangerous toxic ingredients
2.) Irredeemable global warming potential
3.) Unacceptably high fire hazard
4.) Hypersensitive on-site manufacturing
5.) Intolerant of adverse job site conditions
6.) Unhealthy off-gassing
7.) Counterproductive vapor retarder/barrier
8.) Terribly hygrophobic
9.) Weak and unpredictable air control
10.) Inflexible and prone to cracking
11.) Excessive shrinkage
12.) Difficult to identify and repair air leaks
13.) Degrading thermal insulation values
Experts, what do you think?
Posted Tue, 12/18/2012 - 14:59
Edited Tue, 12/18/2012 - 15:22
Other Questions in Green products and materials
Best practices ideas for retrofitting existing PWF built in muskeg and best practices for foundations for new builds in muskeg (i.e. very wet !) and a severe cold climate