we have a cottage cheese ceiling with smoke damage from a fire place and a pipe smoker, and not wanting to scrape all that off, I just got some Kilz 2 and a roller with a broom handle attached and set to work. You can only go one way on the ceiling because of the smoke damage, not back and forth painting but when I was done it was clean, white and just looked tons better.
https://www.hometalk.com/categories/remodeling-renovating/ceiling
Use Paint Pro Roller System and a Broom handle
we have a cottage cheese ceiling with smoke damage from a fire place and a pipe smoker, and not wanting to scrape all that off, I just got some Kilz 2 and a roller with a broom handle attached and set to work. You can only go one way on the ceiling because of the smoke damage, not back and forth painting but when I was done it was clean, white and just looked tons better.
You can plank it-such a cool look! https://www.hometalk.com/diy/-8338545