Towel or air dry the tile before applying any paint.
Epoxy is a durable tile sealant that can hold uneven tiles together and keep your paint coats smooth. You can buy epoxy sealants from most home improvement stores. If you apply epoxy to one tile, apply it to the rest as well for visual consistency.
Wear gloves to keep your hands clean and dry while painting the tile. If you want to paint a complex pattern, make a stencil and tape it in place over the tile. [4] X Research source
Wear a respirator while you’re painting if you’re sensitive to strong smells. If you feel dizzy or lightheaded while painting the slate tile, exit the room until you feel better and contact Poison Control if you experience nausea or vomiting.
The caulk coating should be thin and translucent for an even coat. Scrape off any excess caulk with a razor. If you notice any dips or bumps, smooth them with sandpaper or epoxy before applying the caulk. Unlike primer and paint, you don’t have to wait for painter’s caulk to dry.
Use a paint primer that is specifically made for painting tiles for a strong blond. [6] X Research source Let the primer dry for 30-60 minutes before applying the paint.
Latex or epoxy paint generally adheres best on slate tiles. If the paint has a hard time spreading, add small amounts of paint thinner until you reach an easier consistency to work with.
If you accidentally touch or step on the tile before it’s dried, check it for smudges. You may have to apply an additional coat of paint and let it cure for another 48 hours.
Re-apply the sealant every 6 months to protect your tile and paint coats from damage. [10] X Research source