Not sure where you came up with that. I spent a good deal of my career working with coatings and that's the first I've heard that. Coatings are flattened by adding more pigment by volume to the coating and and using pigment with a coarser grind. Gloss paint uses more resin and less pigment, and the pigment is finely ground. In any case, we are talking about a clear coating. How do you get a clear coating when you add sand to it?
There is no silica in Krylon Clear sealer.
Krylon Clear Sealer, Flat
