Lee,
Yes, you are right, not all solvents are the same.
I went to Cobb's site and could not find Dynachem's UltraSeal's MSDS info. I assume that like many, the solvent is some petroleum distillant. However, this discussion, as far as I am concerned, is not about Cobb.
It is true that the moisture and in this case the VOC is displaced. However, if I am not mistaken, all the air in a structure has to be replaced within 6 hours. That means
that in that time period it will be present in the entire building. In addition many solvents take longer than 6 hours to completely evaporate.
Add to that the fact that the people who are working where the product was applied may get a much higher exposure than defined by the MSDS and it may mean trouble.
I am also quite sure (can't say with 100% certainty) that:
1) He is not using a respirator which is unhealthy for him.
2) That he never discussed the health issue above with the site manager. I am willing to bet that if he did it would not have been approved. I tried it and the moment that came up it was off the table and no one, say again- No ONE was willing to sign an approval.
So if one employee feels dizzy, or faint, or woozy, guess who are they going to go after. I'll give you a hint- it ain't gonna be the manufacturer that surely covered their asses with lots of small print legal disclaimers. And I am sure that his insurance will not cover his ass either. So, hopefully nothing happens and everything will be honky dory but do not count on it.
In this bulletin Board we spend weeks discussing in minute details if 6 hour of pre-vacuuming is better than 53/4. Yet important health issues for the carpet cleaner and their clients is categorized and bunched under the 'left Coast' craziness and the 'liberal agenda'.
Time to pay attention.
It does matter!