You cannot tile directly over hot mop waterproofing because tile requires a smooth, solid surface to adhere properly. Additionally, the shower bed pan needs to be raised and sloped toward the drain to prevent water from pooling. However, you can hot mop and apply a sloped mortar bed over the top (to which the tile can then be adhered). 

No, tiling over painted walls or wallpapered surfaces is generally not recommended. Textured surfaces and paints will affect the adhesive, possibly causing tiles to lift or fall off. Painted walls with a semi-gloss or high-gloss finish are particularly difficult for adding tiles. It’s wise to strip the paint first if you install the tiles to drywall, although it’s still best to opt for a cement backer board.

The process takes two to four days, depending on the size of the area and your experience level. The first day involves assessing and prepping the existing tile, while the second day is for laying the new tile. This may take longer in complex areas. After letting the adhesive dry for 24 hours, grouting and sealing can be completed on day three. For larger projects or intricate tile patterns, expect the timeline to stretch a bit longer. Also, proper drying time between steps is essential for long-lasting results, which extends the project’s time.

Tile installation can be expensive because it requires more time and labor to install than many other materials. For example, laminate flooring can click and lock into place, and carpet comes in large rolls that you can secure to the floor. On the other hand, tiles need to be cut, laid individually, grouted, and left to cure.