Hi everyone, I just applied one coat of BM Super Spec Primer over blue Humitek Drywall in my bathroom. I would say 95% of is covered and the other 5% you can see some blue showing through. Do I need to buy another gallon and put a second coat on - or is one coat enough?
one is enough. the blue you painted over isn't going to bleed through your finish coat. the only reason to prime over dark colors is because the primer is cheaper than the top coat and it will save you money.
I use 2 finish coats on all of my interior walls - even same color over same color. it's rare for a dark color to take 3 coats of anything if you know how to paint.