RH & CC Testing

[eaadams]

I have been told by 'old timers' that the old Asbestos products worked so well also because they had a high? perm rating, i.e. they let vapor get through. Don't know if that is for real.

I do know is Asbestos is expensive to deal with. To do CaCl testing with it on the floor, in California, you need over $2000 just in permits. But the testing companies will do RapidRH testing of asbestos laden floors as they have to disturb just inches of floor space. The limit in CA being 4 s/f where you get into Cal-OSHA requirements.