what is best paint to use on cement board?
I am using a section as a new floor for a kitchen sink base. I would want it to be as water resistant as possible - I plan to use clear silicone to seal the edge seam and fill in some gaps where I cut holes for the water lines and drain (which came from below, not up through the wall and into the cabinet from the rear) - oh, and the piece of material is probably upside-down (the side witht the grid pattern is facing down)
I don't like silicone for this reason. And it is a pain to carve out if you get moisture or whatever behind it. However, you can get quality paintable caulk with SOME silicone in it. Best of both worlds. You get a nice caulk and elasticity from the silicone.
As for paint, I think you will want to use a floor paint. I have use Benjamin Moore's Porch, Floor and Patio paint the most. The oil-based is urethane reinforced and the waterbased is epoxy reinforced. The water based is a little less glossy and might be a better choice for a wet area. You will need a couple of coats but primers are usually not recommended for floors. You can get it in factory and custom mix colors.