painting ceramic pool tiles
Even a glaze said to be food-safe often is not. John Hesselberth and Ron Roy in their book Mastering Cone 6 Glazes demonstrate this by placing a lemon wedge on a food-safe glazed piece of ceramics. Within hours the glaze is discolored from leaching out of the chemicals. Unfortunately the food-safeness of a glazed or handpainted ceramic tile is difficult to determine unless you can speak with the maker because of the fact that many glazes said to be food-safe are not. Which is one of the great advantages of handmade tiles - the ceramic artist can tell you if it is food-safe.
Not all tiles are created equal and the differences can determine if your ceramic tiles will hold up to the use you are putting them. For example low fire tiles or tiles that have only been through a bisque firing are generally less expensive but not nearly as durable as high fired tiles. Even if the tile has been glazed it may still have only gone through one firing and very possibly only a low firing so the fact of it being glossy and colorful is no indication that the tile has the durability of a high-fired tile. Greenware - ceramics that has dried but not been fired can be glazed with a low fire glaze and fired to a comparatively low temperature.
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Knowing the kind of subfloor youll be installing ceramic tile flooring over is important. There are three main types of subfloors you might encounter: Vinyl plywood and concrete floors. Installing ceramic tile flooring directly to your vinyl or linoleum subfloor surfaces is greatly discouraged. One it may contain asbestos fibers; and two vinyl flooring is not a solid as good ol concrete flooring. When installing ceramic tile on vinyl experts would recommend rough-sanding or scarifying the vinyl floor surface first so your tiling mortar has good grip to set on.
There are three main types of floors (or subfloors) that you might encounter when starting on your ceramic tile installation: a. A concrete floor - Working ceramic tiles over a concrete subfloor is the most ideal but you have to check and clean it of debris before you start. All the cracks and holes need to be repaired and filled in before your ceramic tile installation can start. Once your start working on your project each of your ceramic individual tiles will be bonded directly to the concrete floor. If the cracks widen this will affect your tiles as well.