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Bathroom Waterproofing & Tiling Singapore

Bathroom waterproofing membrane application before tiling in Singapore
HMS Tiling Singapore

Bathroom Waterproofing & Tiling in Singapore

Bathroom leaks damage your own home and the unit below yours. HMS handles bathroom waterproofing and tiling in Singapore as one complete job — membrane application to HDB and BCA standards, followed by tiling — so the waterproofing and the finish are done properly together. We also repair failed waterproofing where leaks are already showing.

HDB-Registered ContractorLicence HB-02-5076Z
12-MonthWorkmanship Warranty
10+ YearsIn Singapore
Direct ContractorNo Middlemen
Waterproofing membrane being applied across a bathroom floor
Membrane application
Bathroom drain and wall corner being reinforced for waterproofing
Drain and corner detailing
Completed Singapore bathroom with tiled walls and non-slip floor
Completed bathroom tiling
WHEN THIS SERVICE IS NEEDED

When This Service Is Needed

A simple visual check can tell you whether your bathroom or balcony may need re-waterproofing. Look for:

  • Loose or hollow tiles on the floor or in the shower area.
  • A persistent mouldy, damp appearance on walls, grout or sealant.
  • Peeling paint on the wall adjacent to the bathroom.
  • Yellow stains on the ceiling — under your shower, or on the ceiling of the unit below.
  • Renovating a bathroom anyway — waterproofing should be redone before new tiles are laid.
  • A leak complaint from the neighbour below.
WHAT CAUSES THE PROBLEM

What Causes The Problem

Bathroom leaks usually come from failed waterproofing. The membrane applied beneath the tiles may have been damaged during the original installation, may have aged, or may never have been applied to the correct areas. Once water reaches the substrate through cracked tiles or worn grout, it travels along the floor and walls — which is why the stain below is often some distance from the actual source.

Sealant and grout also fail with time. The silicone around the shower tray and the grout between tiles keep water out of the substrate, and both wear out after years of use.

A leaking pipe is a different cause with a different fix. If the leak continues when the bathroom is not in use, or the stain appears suddenly, the source may be plumbing rather than waterproofing. We identify the source on site before any work is quoted, so you are not paying for waterproofing when the real problem is a pipe.

Our working method

How HMS Handles It

  • Inspection. We check the bathroom and the affected areas to identify the source of the leak.
  • Diagnosis and recommendation. We distinguish between waterproofing failure and plumbing issues, and recommend the right scope.
  • Surface preparation. The affected tiles are removed and the substrate is cleaned and levelled.
  • Waterproofing application. A waterproofing membrane is applied to HDB and BCA standards — at least 150 mm up the walls in wet areas and full-height protection in shower areas — followed by a ponding test before tiling. Our waterproofing methods follow HDB and BCA standard ceiling-leak procedures, to prevent future seepage from occurring.
  • Tiling. New tiles are laid over the waterproofed surface.
  • Grouting, cleaning and handover. The bathroom is grouted, sealed, cleaned and handed over.
  • Workmanship warranty. The work is covered by a 12-month workmanship warranty. Tile product defects are covered by the manufacturer.
    • REPAIR, OVERLAY OR REPLACEMENT OPTIONS

    Repair, Overlay Or Replacement Options

    • Full re-waterproofing and re-tiling. The reliable option when the membrane has failed — the bathroom is stripped, waterproofed and re-tiled.
    • Targeted repair. Suitable when the leak is localised and the rest of the waterproofing is intact. Water can travel, so we confirm on site whether a targeted fix will hold.
    • Re-tiling only. If the waterproofing is sound and only the finish is being updated, tiles can be replaced without re-waterproofing — we check first.
    AREAS AND PROPERTY TYPES

    Areas And Property Types

    HDB and BTO bathrooms, condominiums, landed properties and commercial toilets and wet areas. Balconies and patios use the same waterproofing standards.

    Clear quotations

    Pricing

    Every project is assessed individually based on its condition, area and required preparation. HMS provides a written quotation after assessment.

    WHY CHOOSE HMS

    Why Choose HMS

    • Waterproofing and tiling are done by the same contractor — no gaps between trades, and methods follow HDB and BCA standard ceiling-leak procedures.
    • Wet-area work follows HDB and BCA procedures, including the ponding test and ceiling-leak repairs.
    • We identify the real source of the leak before quoting.
    • 12-month workmanship warranty on the completed work.
    Common questions

    Frequently Asked Questions

    How do I know if my bathroom needs re-waterproofing?

    Check for ceiling stains below, damp patches, mould or peeling paint near the bathroom. A site assessment confirms the cause.

    What should I check if I suspect a leak?

    Look for loose or hollow tiles, persistent mould or damp, peeling paint on the wall beside the bathroom, and yellow stains on the ceiling under the shower. Send us photos through WhatsApp — the final diagnosis is confirmed during the site assessment.

    Do you hack the whole bathroom?

    Only the affected areas are stripped unless the inspection shows the membrane has failed throughout.

    How long does it take?

    A full bathroom re-waterproof and re-tile typically takes about a week, including the ponding test. We confirm the exact timeline after the site assessment.

    Who is responsible if the leak is from a pipe?

    Plumbing repairs are a separate trade. We identify the source first — if it is a pipe, we will tell you before any waterproofing work begins.

    Can you waterproof without re-tiling?

    In limited cases, if the tiles are sound and only the membrane is at fault. We confirm whether this is possible during the assessment.

    Does the warranty cover leaking?

    The 12-month workmanship warranty covers workmanship defects, including waterproofing applied by HMS. Product defects are covered by the manufacturer.

    Explore HMS services

    Related Services

    Bathroom TilingTile Overlay ServicesTile Hacking & Re-tilingKitchen Tiling
    Speak with our team

    Request an Assessment

    If you suspect a leak, send photos of the stains or damp through WhatsApp, or book a site assessment. The source needs to be confirmed on site before work begins.