Painting Bathroom Tiles in London: Product Selection, Preparation, and Realistic Expectations

Is Painting Bathroom Tiles the Right Choice?

Painting bathroom tiles is a legitimate option for certain situations, and a poor choice for others. The honest answer is that painted tiles will not perform like new tiles — they require careful maintenance, are vulnerable to chipping and peeling under heavy use, and will eventually need repainting or tile replacement. But in a London flat where re-tiling is not feasible due to cost, disruption, lease restrictions, or the condition of the substrate behind the tiles, painting is a practical short-to-medium-term solution.

The situations where tile painting makes sense:

• A rental property where tiles are dated but structurally sound, and full re-tiling is not cost-justified.
• A London flat with a pending sale where the bathroom needs to look refreshed without the cost of replacement.
• Tiles that are in good condition but an unfashionable colour (avocado, pink, or patterned tiles from the 1970s–1980s) that the owner wants to update without the disruption of re-tiling.

The situations where it is better to re-tile:

• Tiles with cracks, chips, or loose adhesion — paint will not bridge these and will actually accelerate deterioration by trapping moisture.
• Areas of heavy shower or bath splash with no ventilation — the most demanding environment for any painted surface.
• Where the expected occupancy or resale standard requires a long-term solution.

Product Selection

Standard interior paint will fail on tiles within weeks in a bathroom environment. The correct products are:

Specialist tile paint — products formulated specifically for ceramic and porcelain tiles. Rust-Oleum Tile Transformations, Ronseal Tile Paint, and Johnstone's Tile Paint are the main retail options. These are water-based, one-pack systems with reasonable adhesion to smooth ceramic surfaces. They are suitable for lower-use walls, splashbacks outside the direct shower zone, and areas where the tile finish is being refreshed rather than made to perform as new.

Two-pack epoxy tile paint — significantly more durable than one-pack systems. Used in commercial kitchens, swimming pools, and industrial tiled areas. Products include Rust-Oleum 9700 and Halford's two-pack epoxy. Harder, more chemical-resistant, and more durable. Requires accurate mixing and has a limited pot life once mixed. The correct professional choice for bathroom tile painting where maximum durability is required.

Spray-applied tile finishes — some professional refinishers apply acrylic lacquer or two-pack polyurethane by spray gun. The finish quality is superior to brush or roller application, but requires masking the entire bathroom carefully and specialist equipment.

Preparation: Non-Negotiable Steps

Preparation for tile painting is more critical than for almost any other painting application. Any contamination, grease, soap residue, or mould will cause adhesion failure regardless of the product quality.

Step one: clean thoroughly. Use a specialist tile degreaser or a sugar soap solution. Pay particular attention to grout lines, which accumulate soap scum and mould. Rinse with clean water and allow to dry completely — 24 to 48 hours minimum in a London bathroom without mechanical ventilation.

Step two: treat any mould. Mould behind existing paint or on grout must be treated before repainting. A dilute bleach solution (1:4 bleach to water) applied and left for 30 minutes, then rinsed and dried, is the standard approach. Allow to dry fully before proceeding.

Step three: sand lightly. Smooth ceramic tiles need to be abraded to create adhesion for the primer. Use 220-grit wet and dry paper. The tile does not need to look scratched — a fine key is sufficient. Wipe down with a tack cloth after sanding.

Step four: check grout condition. Cracked or missing grout should be repaired before painting. New grout needs to be fully cured — at least seven days — before painting over it. Grout that has mould ingrained through to the core may need to be raked out and replaced.

Step five: prime. Most tile paint systems include a dedicated primer. Use it. On very smooth glazed tiles, a shellac-based primer (Zinsser BIN) applied before the manufacturer's own primer significantly improves adhesion.

Application

Apply tile paint in thin coats. Thick coats sag, drag on recoat, and dry with an uneven sheen. Use a fine foam roller for large areas and a small brush for grout lines and edges. Two to three coats are standard, with the manufacturer's recommended recoat time observed between each. In a London bathroom in winter, drying times extend — do not rush.

Do not use the shower or bath for at least 48 to 72 hours after the final coat, and avoid heavy water exposure for the first week to allow the paint to harden fully.

Durability Expectations

With one-pack tile paint and proper preparation, expect two to four years of acceptable appearance on lower-use surfaces, and one to two years in direct shower areas before touching up or repainting is needed. With a two-pack epoxy system and professional application, five to seven years is achievable on non-shower walls.

For an honest assessment of whether painting is the right option for your London bathroom tiles, contact us here or request a free quote.