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). 

Yes, tiling a bathroom is a great way to boost your home's value, especially if you are replacing old or dated flooring. Adding a new tile floor can deliver a return on investment (ROI) of around 56.4%, with some projects offering up to 100% ROI. Buyers appreciate new tile because it provides a modern look and is known for being durable, water-resistant, low-maintenance, and easy to clean. For the best results and highest return, consider hiring a professional, as tiling mistakes can be very noticeable and detract from the value.

Uniform spacing between tiles is important for a professional and clean appearance. To achieve this spacing, tile spacers should be placed between the tiles and left in place until the mortar hardens and the tiles are secure. You can use X-shaped spacers vertically in between the tiles and laid flat at the corners.

When choosing between porcelain and ceramic tile, the best option depends on your specific needs, budget, and project application. Porcelain tile is generally more durable, denser, and harder than ceramic, making it a good choice for busy, high-traffic areas. It also offers superior moisture resistance, making it ideal for moisture-retaining spaces. However, porcelain is typically more expensive, and its hardness can make it brittle, potentially causing it to crack if a heavy object is dropped on it. In contrast, ceramic tile is a more budget-friendly option with lower material and installation costs. It is softer and easier to work with, making it a great choice for DIY projects. While not as durable as porcelain, ceramic is still a quality material suitable for many home applications, particularly small, decorative projects.