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No, you don’t technically need a cement backer board for a wall tiling project, but not using it risks disastrous moisture damage. Cement is naturally water-resistant, whereas drywall soaks it in, which can lead to warping or mold growth. Always use a backer board treated with a waterproof membrane for bathrooms and other chronically damp areas to ensure complete tile shower waterproofing.

It’s best to install a shower door after the bathroom tile is in place to ensure you have accurate measurements. If you try installing a shower door first, the tile might be too thick to install afterward, or the tile will be too thin and create a gap between the shower doors that allows water to leak. With the tile in place first, you’ll know the exact shower door size that you need.

Yes, you can tile over existing shower tiles, but it's better to remove the old tiles first for the best results. Tiling over existing tiles requires a clean, level surface and proper adhesion. If the old tiles are in good condition, you can roughen the surface to improve adhesion. However, removing the old tiles ensures a smoother, longer-lasting finish and prevents potential issues down the line.

Regrouting is cheaper than retiling, and it involves less work. Grout is available in a wide range of colors, making it a cost-effective way to improve the look of any tiled area in your home.