This dwelling was built in the 60's and every ceiling but the lavatory has the popcorn. I'm leaving my ceilings on your own. Up coming operator can handle it. I typically overlook them. They may be a dickens to paint although and I've finished my share of that. This method http://how-much-does-popcorn-cei45442.thezenweb.com/The-Ultimate-Guide-To-dust-free-popcorn-ceiling-removal-32091576