If you haven't used KILZ before, make sure you have windows and fans open and operating when you start. It's flamable too! I happen to finish a bathroom about 5 years ago and my wife in her infinite ability to help offered to put a 2nd coat of KILZ on the bathroom walls. Well, I forgot to tell her about its potency. Granted, a bathroom is an enclosed room even when you open a window but don't be fooled. I suggest the fan 'push' air to the outside and the opened garage doors be your 'intake'. My wife ended up throwing up from inhaling a bit too much w/o even trying.