How do pros paint textured walls, specifically knockdown texture?
I'm using a Sherwin Williams emerald paint, an acrylic latex paint and a roller with a 3/4" nap. However, I'm still left with large areas where the paint can't reach all the little troughs and valleys in the texture. I'm having to go back over almost the entire wall with a paint brush and use a stipple technique to get good coverage.
Can I thin the paint out and do two coats? Should I invest in a sprayer? Thanks so much for any tips. 
Best Answer
You just need a little more pressure. It looks like you have enough paint on the roller, and just need to press the nap into the texture more assertively. The texture isn't extraordinarily deep or sharp, and those dots appear to be a matter of nap reach, and not of smearing.
If the latter were the case, you could use a wet re-roll strategy--after you finish a wall, go back and re-roll it right away. I've done this with great success when painting bold colors over light colors, for example.