Works, but causes serious health issues.
It goes on well, and provides good waterproofing, but there are health issues associated with it. I used a full organic vapor mask when spraying it in a well-ventilated area. An hour later, I couldn't catch a deep breath and I had asthma symptoms for eight hours. I would cough to the extent that my air passageway would close off. I read other reviews that described similar results and said they went away, so I avoided a trip to the emergency room. Still, this stuff is nasty.
I don't know how this stuff got into my lungs--I couldn't smell it when I was spraying and I use the same set-up when spraying lacquer and other solvent-based products. Never had this reaction to any other waterproofing spray.
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