How dangerous are isocyanates?
Isocyanates include compounds classified as potential human carcinogens and known to cause cancer in animals. The main effects of hazardous exposures are occupational asthma and other lung problems, as well as irritation of the eyes, nose, throat, and skin.

Unfortunately many polyurethanes contain this dangerous compound. In fact, when my husband began finishing hardwood he had 3 dangerous reactions of throat closing proportions while using it. Once so toxic it caused my husband’s eyesight to become so off balance, and so disoriented he had to drive to the emergency room. It was absorbed thru his eyes and skin despite a respirator, a tyvek suit and googles over his glasses. Speaking to a fellow floor refinisher who used it he was contaminated by it and while driving drove in to a toll booth because he was intoxicated from it.

How dangerous are isocyanates? Isocyanates include compounds classified as potential human carcinogens and known to cause cancer in animals. The main effects of hazardous exposures are occupational asthma and other lung problems, as well as irritation of the eyes, nose, throat, and skin.
With concern while all that happened I called my supplier, whose owner, a chemical engineer confirmed this is a nasty compound. While effective as a polyurethane, it also is so toxic it causes medical problems in about 14% of the people working with it.
Many polyurethane finishes have this component in the blends. Not for us. We can’t use it, don’t want to expose our refinish guys using it. And, we don’t want to bring it in to our customers’ homes using it.
There are safer formulas that are much more user friendly.  We care about our clients, their families, our staff and ourselves. If this is important to you we can tell you more about the much safer finish processes we use