: Wash walls with a mild cleanser or a mixture of water and sugar soap to remove grease and dust. Let the walls dry for at least 24 hours to prevent mold growth behind the paper.

: Fill cracks, holes, or divots with a non-shrinking spackle or joint compound. Once dry, sand the area smooth.

: Apply a clear, non-staining primer or "sizing". This seals the wall, promotes adhesion, and—crucially—makes the wallpaper much easier to remove in the future without damaging the drywall. Phase 2: Layout and Sizing (2560x1600 Resolution)

: Remove all outlet covers, light switch plates, and external fixtures. Turn off the power at the breaker before working around exposed electrical components.

Before hanging any physical mural or wallpaper, the wall must be clean, dry, and smooth.

To prepare for a 2560x1600 building wallpaper installation—whether as a high-resolution digital desktop or a physical wall mural—you must prioritize surface quality and correct sizing. For physical installations, , as flaws in the wall are often magnified once the paper is applied. Phase 1: Surface Preparation (Physical Wall)

If you are dealing with a digital mural or specialized print at (a 16:10 aspect ratio), layout is critical. How to hang wallpaper: Step-by-step guide | B&Q