mjb920 wrote:

I am having problems applying Behr Premium Plus Interior flat paint on
primed drywall. I am getting bubbles and sags in the paint after I roll
it on. I am used to rolling the paint on in a "W" shape, rolling again
to spread the paint, and then backrolling once more - a total of three
passes with the roller for each section I do. Now I have to roll each
area at least one more time to smooth out the paint. After that, I
have to re-roll some areas that have been down for a few minutes
because the paint is sagging. Thanks for any help.

Jim

If the paint is sagging, you are putting on too much. What kind of
roller cover? Should be short nap unless textured wall. Don't load it
so full. Tiny pinpoint bubbles may appear if you are rolling an area too
much, but most level out.