Water_resistant backer board, not drywall, should be used under tile that is likely to get wet (shower walls and bathroom floors, for example). Whether it's backer board, plywood, or concrete, the substrate needs to be sound, clean, and dimensionally stable. Surfaces need to be level or plumb and true to plane, as the pros say__that means no bumps. Wallpaper, loose plaster, flaking paint, peeling tiles or unsecured sheet flooring must be removed from the walls or floors that are to be tiled.
Shining Clay Tiles: Allow the baked clay tiles to cool. Dust off any debris formed due to the crusting. Pour some of the glossy tile sealer into a paint tray. Dip a brush with lamb wool bristles into the tile sealer solution. Coat the clay tile, using light strokes. Allow the first coating to dry. Wipe the tile with a dry cloth. Apply more coats of the sealer if you need more gloss.
by Robert D. Leblanc on Aug 01, 2018 Ceramic Tile