I didn’t follow any of the rules of ceiling painting and now have a mess after paying almost $500 to have the knock down texture blown on the ceiling. I have roller lines and it seems to have picked up the squares of the 2X6 beams also so I have lines everywhere.
I use a extension roller and 3/8 roller cover. I have Sherman Williams decent quality paint and a latex flat.
Love to make it right without re-blowing the texture.