I agree that one should only use a proper spraying room and a really good respirator when using solvent based coatings. That stuff is lethal in so many ways. In the spray rooms I used, all the light fixtures were double sealed so that vapor could not get near them and if a light failed, no spark could enter the room unless there was a major catastrophe that broke 2 layers of enclosures. The fans were designed to not permit sparks to enter the environment or air flow, and even electrical switches and outlets, + the air compressor were all located well outside the spray room.
Bill, once the coatings you use have cured, how tolerant are they for the ability to clean with a damp cloth or stronger cleaners?