Thanks for your help, guys. To answer Ron's question, I will be applying normal wall texture to the ceilings after the popcorn is removed. I'll probably spray it on, so will have to do a lot of masking and covering, obviously. My main question was how long I could expect it to take me to remove the popcorn. I checked out this link (http://www.homaxproducts.com/howtoideas/removing.htm) that someone named Gene gave in another similar post, and it says something about removing 10 sq. ft. every 30 minutes. So going by this, the average ceiling (10’x15’) should take up to eight hours. This sounds high, what do you guys think?