Wallpaper Installation in Tsz Wan Shan

Painted walls, yes, after cleaning and priming. Papering over old wallpaper is a false economy — trapped seams telegraph through and moisture can lift both layers. Strip first; installers quote removal as a separate line.

Yes — paste-the-wall (non-woven) papers skip soak time, hang faster and strip dry in full sheets later. Most modern papers use this backing. Traditional paste-the-paper and delicate materials like grasscloth still reward a professional hand.

A single feature wall is usually half a day; a full average room takes 1-2 days including prep. Add time for stripping old paper (half to a full day per room), wall repairs, and drying between prep coats.

Yes, and prep is most of the outcome. Walls need to be smooth, clean, primed/sized, and uniform in colour (dark patches ghost through pale papers). Fresh plaster must fully dry and be sized first. Ask whether prep, lining paper, and primer are in the quote.

Look for installers in Tsz Wan Shan who show seam close-ups in their photos, not just wide room shots — invisible seams and pattern matching at corners are the skill. Ask what papers they specialize in; grasscloth and mural specialists are a different tier from vinyl hangers.

On well-primed interior walls with quality paste, no. The risk is external-facing and bathroom-adjacent walls where 回南天 condensation soaks in — seal those with moisture-resistant primer or choose washable vinyl papers there.