Yes, traditional wallpaper can be painted over, but it's important to prepare the surface properly to ensure a smooth and durable finish. Any loose or peeling wallpaper should be removed, and the surface should be cleaned, repaired, and primed before painting. Using a high-quality paint and following proper painting techniques can help ensure a successful outcome.

Here are some tips on common mistakes and how to avoid them: Common mistakes applying peel and stick wallpaper and how to fix them