Apply a primer. Depending on what your kit suggests, either use a primer meant for glossy ceramics or an acid-based deglosser. These products make it easier for the epoxy paint to adhere to the surface of the floor tile. Some kits come with the necessary primer, but in many cases you’ll have to purchase it separately. Follow the primer directions carefully to make sure that you apply it correctly.
Some suggest using a sprayer to apply the primer, instead of rolling or brushing it on. This may prevent some stickiness, but you’ll likely want to practice with the sprayer beforehand, as they can sometimes be difficult to use.
Mix the epoxy together. Most kits come with two separate paint cans: the activator and the base. Grab each can and give it a good shake. Then, slowly pour them together in your paint tray. If the final mixture looks a little transparent or milky, that is okay. It will handle a bit like glue and will dry solid, too.
Apply at least two coats of paint or reglazing compound. Pour the mixed paint into a sprayer or dip a brush into your paint pan. If you are working with a brush, start with the edges first and work your way in. You could even brush out the edges and then use a roller for the middle. After your first coat is finished, give it at least two hour to dry. Then, apply the next one.
It’s generally best to use a foam roller, as it will leave less of a pattern on the spots tile. And, if you use a paint pan, make sure to change out the liner and refresh the paint before applying a second coat. Otherwise, you may end up with dried paint lumps on your cloud tile.
Spend extra time with any decorative areas. If your mosaic tile has a special border or extra embellishments, expect to go a little bit more slowly on these areas. You may want to switch to a brush, so that you can get deeper into any indentions or prints.