Tiling in Sau Mau Ping

A full bathroom (floor plus walls) typically takes 3-5 days: prep and waterproofing first, then setting, then grouting after the adhesive cures. Add days if old tiles must come off or the substrate needs levelling. Rushing cure times is the classic cause of cracked grout later.

Sometimes — if the old tiles are solidly bonded and the extra height works at doors and fittings, tiling over is legitimate and avoids messy removal. It fails when old tiles are drummy (hollow-sounding) or the wall can't take the weight. A good tiler taps and checks before promising either way.

Almost always substrate or installation, not the tile: movement in the floor, missing expansion joints, adhesive coverage too thin (spot-dabbing), or tiling over a drummy layer. Cracked single tiles from impact are replaceable if you kept spares — always keep a box.

Yes — tiles and grout are not waterproof; the membrane behind them is. Most countries mandate or strongly standardize wet-area waterproofing, and it must cure before tiling. If a bathroom quote doesn't mention waterproofing, that is the question to ask before anything else.

Removal is priced per square metre and depends on what's underneath: tiles on board come off fast, tiles on thick sand-cement beds are slow, noisy demolition work. Budget for substrate repairs after removal — you rarely know the wall or floor condition until tiles are off.

Tiling labour runs roughly HK$40-90 per sq ft depending on format, with a full bathroom hack-and-retile including waterproofing commonly HK$30,000-60,000 in a typical flat. Quotes are per sq ft — always get the measured area in writing.