As long as the can was either new & unopened, or partially used and then
closed correctly (without damaging the seal), year old paint shouldn't be a
problem. You sound like you're fully functional from the neck up, so your
mixing method was probably fine. But, if you're dealing with primer, you can
also shake the bejeezus out of the can, being sure to invert it often.

"mjb920" wrote in message
oups.com...
The wall was primed with latex primer and I mixed the paint well. I
did fail to mention in my original post that I have this horrible
medical condition called laziness that has caused the paint to sit for
well over a year. Behr tech support told me to try thinning it a
little, and I might try a shorter nap roller.

Thanks to all of you for the help.

buffalobill wrote:
if it's not the surface and it's not the painter it's the paint. return
it they will replace it for free. check other posted advice. we've
never had a bad can of behr, but there's always a first time.
note to beginners: read the whole can and follow temperature directions
and mix thoroughly.