GBlist: GB List: OSB question

[Chris & Ruth Koehn <crkoehn@mailbag.com>]

Can anyone provide accurate information regarding the harmfulness of 
phenol formaldehyde in building materials? 

I am concerned specifically about OSB. Weyerhauser Structurwood, an 
otherwise exellent product, lists it as a hazardous ingredient on it's  
MSDS, along with Methylene bisphenyl, and Isocyanate. No further 
information is given other than that it is present. 

We use alot of the stuff as a component of structural insulated panels, 
(which I will gladly defend ad nauseum at another time) but I would like 
to know more about the hazards, especially long-term exposure, rate of 
off-gasing, cumulative effect, etc.

Thanks for the help,

Chris Koehn
Top Ridge
(trying to build green in our Wisconsin backwater since 1988)

 
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