Should your “popcorn” ceiling has long been painted, you might not have the capacity to penetrate the paint with h2o to totally soaked the asbestos that contains material just before the disturbance. Complete wetting is important for avoiding the release of asbestos fibers for the duration of removal. Check out http://popcorn-removal-tool33333.blogolize.com/An-Unbiased-View-of-how-much-to-remove-popcorn-ceiling-30564449