A successful tile backsplash installation relies entirely on proper surface preparation. First, remove any existing tiles, wallpaper, or peeling paint to expose the drywall or substrate. If the wall is damaged, use joint compound to patch holes and ensure the surface is smooth. In wet areas, ensure you are using moisture-resistant cement board or glass-mat water-resistant backer board instead of standard drywall. Finally, clean the surface thoroughly to remove dust or grease, which can prevent the thin-set mortar from adhering correctly. If your wall is uneven, use a level to mark your starting point to ensure the tile layout remains square and professional.

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