I have serious concern about whether we are better off with polyurethane
adhesives. I have been told by an industrial hygienist that urethanes
give off a chemical called, I think, MDI which is known to be toxic in
low concentrations. Does the urethane in such a product give off MDI? It
is definitely given off in liquid or mastic-type products, and
manufacturer's of them state that it shouldn't be used indoors. Does
anyone have any more info on this?
John Bunzick, CCS, CCCA
HKT Architects, Inc.
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