Bathroom Renovation Advice & Guides | ARDECO

Microcement in Bathrooms: Application, Waterproofing and Curing

Microcement can give bathroom walls, floors and selected fittings a continuous, contemporary appearance. Its understated texture suits both compact London bathrooms and larger wet rooms. The finish is only as successful as the substrate preparation, waterproofing system and protective coating beneath and above it.

Microcement in Bathrooms: Application, Waterproofing and Curing

Contemporary bathroom with a seamless warm grey microcement finish
Illustrative image

What is microcement?

Microcement is a thin decorative coating system, commonly based on cementitious or polymer-modified materials, installed in multiple layers. Product formulations differ. Colours typically range from warm neutrals and concrete greys to richer tones, and the final appearance depends on pigment, application technique and sealer.

Where can it be used?

Depending on the specified system, microcement may be suitable for walls, floors, basin surrounds and wet areas. It is not automatically suitable for every substrate or continuous water exposure. A manufacturer-approved wet-area specification is essential where the surface will be exposed to showers.

1. Inspect and prepare the substrate

The background must be sound, stable, suitably dry and free from contamination. Cracks, movement, loose tiles or damp need investigation before work starts. Some systems require reinforcement mesh, a specific primer or a levelling layer. Covering an unstable background with a thin decorative finish does not solve the underlying issue.

2. Waterproof shower and wet-room areas

In wet areas, specify the compatible waterproofing (tanking) system, including corners, pipe penetrations and drain connections. Do not rely solely on the visual continuity of microcement or on a final sealer to protect the building fabric. The waterproofing arrangement must work as a complete system.

3. Apply the specified base and finishing coats

Installers apply successive coats to the manufacturer’s specified thickness, allowing the required intervals between stages. Sanding or smoothing between coats develops the texture and consistency. Excess thickness or rushed drying can cause problems; there is no single universal recipe that suits all products.

4. Seal and protect the finish

Approved sealers protect the decorative surface against moisture and staining. The coating specification, number of coats and suitability for immersion or frequent wetting vary. Pay particular attention to the transition between walls and floors and to sanitary fittings.

5. Allow the full curing period

Dry to the touch is not the same as ready for use. Some manufacturers specify several days before normal use and around seven days or longer before shower exposure; others have different requirements. For example, a published Creativo microcement application guide states a minimum seven-day wait after the final coat before first shower use. Always follow the technical data sheet of the exact product installed, rather than relying on a blanket 24-hour rule.

What are the advantages?

  • Visually continuous finish with fewer obvious joints.
  • Customisable colour and trowelled texture.
  • Useful for carefully planned minimalist schemes.
  • Potential to coat suitable existing surfaces when the complete system permits.

What should you consider before choosing it?

Microcement requires careful workmanship and a stable substrate. It may need more specialist maintenance than standard porcelain tiles, and some finishes can be slippery when wet unless an appropriate surface specification is selected. Ask for a sample and written care advice.

Example of a completed microcement bathroom

Our Hornsey N8 microcement bathroom project shows an example of the decorative finish used in a completed room. The project case study also explains why the complete waterproofing and sealing specification matters in wet areas.

Plan a microcement bathroom with ARDECO

Explore our microcement service and discuss the condition of your existing surfaces, the intended wet areas and the finish you want. We can then establish the appropriate scope and product specification.

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