Sponge or brush for walls, and for priming plywood floors I use a grout float. What type of roller do you all use? Never tried a roller on floors but sounds like a quick way of doing it.
For priming over old tile adhesive before SLC, I use a stiff brush. Pulls the primer back out of the grooves.
I'm losing big style with the sprayer!!!!
It does work, not on all stuff, it's controlable and then you can back back roll for floors or wipe with a sponge for walls, it doesn't run down your arms.
i'm not a fan of spraying primers. i think its better to use a brush or a roller so it actually gets worked into the substrate.
if a surface substrate is low suction then a sprayed primer can sit on the surface whereas a brush or roller agitates it in more.
