I've performed this in two households which can be each old houses. The a single dwelling, my moms, I are aware that the popcorn was extra once the former homeowners remodeled it, it had been all on plaster and had no problems. It is very messy but well worthy of http://how-much-does-popcorn-cei69000.tinyblogging.com/Top-ceiling-popcorn-removal-tool-Secrets-35017256