So far, I've covered one piece with this chalkboard spray paint. It seems to apply nicely, but not as evenly as I had hoped it would. I had also purchased chalkboard paper at the same time, and appreciate how it applies to the surface more than the spray paint. I think for large surfaces, the spray paint would work well, but for covering 9X9, I wouldn't necessarily recommend it. I have not yet tested chalk on it because you need to wait 24 hours for it to dry. Also, make sure you have actual chaSee full review