What if I want to keep a flat ceiling without new texture? I've done this before, but once you set the primer to the sanded and wiped down ceiling, the roller picks up any modest dust and leaves unpainted spots. Do there is a Remedy? Additionally, there are Internet sites http://how-long-to-remove-popcor80997.ivasdesign.com/18766092/details-fiction-and-popcorn-ceilings-removal-cost