For example: John Smith wrote:

I have a medium textured ceiling and it was off-white and I just gone done
painting it with white Behr ceiling paint and a 1/2" roller and I did not
prime, also I mixed the paint really well. It has dried for several hours
now and it looks terrible. I have done plenty of painting in my time but
this was my first ceiling, is it really that different? It is blotchy and
and all I see is lap marks. What did I do wrong? I am obviously going to
re-paint so I am guessing I should prime first and use a bigger roller but
what about the paint, should I use just a flat wall paint? Also, the texture
has a grain to it, do I paint with or against? Please help, thanks.




What kind of texture? Swirl? From the sound of it, the paint has just
"sunk", or been absorbed more
in some areas than others. That happened with our ceiling, previously
painted and with one coat of primer
for the latest job. I assume the ceiling was clean and not heavilly
stained? I would get a shorter nap roller.
1/2" is pretty much like using a rag mop. Let the paint dry well, use
shorter roller and do the "W" thing when
you roll on the paint - paint a "W" shape on about 3x3' area and then
straight same direction and then
straight across it. With a 1/2" roller it seems you would have an
extremely heavy coat in some areas; if heavy
enough, the lap marks probably won't go away. Flat paint?