How To Paint Bathroom Tiles

Painting bathroom tiles can be a practical way to refresh a tired space without the cost and disruption of a full retiling job. If you are wondering how to paint bathroom tiles properly, the key lies in preparation, product choice and understanding the limits of painted surfaces in a high moisture environment. Done well, it can last several years. Done poorly, it will peel within months.

This guide is written from a trades perspective, with realistic expectations, UK costs and the kind of detail you would get from a decorator or bathroom fitter on site.

Is Painting Bathroom Tiles a Good Idea

Painting tiles is not a permanent replacement for new tiles, but it has its place. It works best where tiles are structurally sound, firmly fixed and still watertight. If the substrate is failing or there is movement behind the tiles, paint will not solve the problem.

Typical situations where painting works well include cosmetic updates, rental properties, quick refreshes before sale, or where budgets are tight. It is less suitable for high wear zones such as inside showers or on floors.

In UK homes, painted wall tiles outside of direct water spray can last between three and five years before showing significant wear. Inside a shower enclosure, even specialist systems often need touching up within twelve to eighteen months.

The existing tile colour also affects the amount of work required. Changing pale tiles to a darker colour is usually straightforward. Covering strong patterns or dark tiles with white may require an additional coat, even where the product claims strong opacity.

Paint will not disguise uneven tiling, wide grout joints or poorly finished edges. In fact, a uniform colour can make surface defects more noticeable. Inspect the walls in good natural and artificial light before deciding whether painting will produce the finish you want.

When You Should Not Paint Tiles

Before picking up a brush, check whether the tiles should be replaced instead.

• Loose or hollow sounding tiles when tapped
• Cracked grout across multiple joints
• Persistent damp or mould behind tiles
• Water ingress around baths or showers
• Outdated adhesives breaking down

If any of the above apply, deal with the underlying issue first. In some cases, you may need to remove and refix tiles using the correct product. For more detail on proper fixing methods, see Tile Adhesives Explained for Home Renovations Flexible Rapid Set and Waterproof Options.

Widespread cracking may indicate movement in a timber floor, damaged plasterboard, failed tanking or an unsuitable background. Painting over the cracks merely hides the warning signs for a short period. A bathroom fitter or tiler should inspect the area if there is staining in the adjoining room, a soft wall surface or a persistent musty smell.

Do not paint tiles that remain damp after the room has been aired. This may point to a leak, failed sealant or condensation caused by inadequate extraction. The source of the moisture must be corrected and the surface allowed to dry before coatings are applied.

Tile Suitability by Material

Not every tile surface accepts paint in the same way. Identify the material before buying a system, then check that the primer and topcoat are approved for it.

Glazed Ceramic Tiles

Glazed ceramic wall tiles are the most common candidates for painting. The glaze must be completely clean and lightly abraded, followed by a suitable bonding primer. Chipped glaze should be repaired because sharp edges can remain visible beneath the coating.

Porcelain Tiles

Porcelain is dense and has very low porosity. Paint can be applied, but adhesion is more demanding than it is on ceramic. A high adhesion primer specifically listing porcelain is essential. Test the full system on a discreet tile and allow it to cure before carrying out an adhesion check.

Glass and Glass Mosaics

Glass is exceptionally smooth and difficult to coat reliably. Some specialist primers will adhere to it, although the finish is generally better suited to decorative areas than wet zones. Numerous mosaic joints also make application slower and increase the risk of runs.

Natural Stone

Marble, limestone, slate and travertine need careful assessment. Paint removes the natural appearance and can trap moisture or react with an existing impregnating sealer. Acidic cleaners can damage limestone and marble. Painting valuable natural stone is rarely advisable unless a coating manufacturer confirms compatibility.

Quarry Tiles and Terracotta

Unglazed quarry tiles and terracotta are porous and may contain old wax, oil or sealers. They can absorb primer unevenly and may require more material than expected. These surfaces are usually found on floors, where a wall tile paint would not withstand foot traffic.

Textured and Relief Tiles

Textured tiles can be painted, but recesses are difficult to clean and coat evenly. They need more paint than flat tiles, and foam rollers may not reach the full profile. A brush can be used to work the coating into low areas before lightly rolling the face.

What Paint Should You Use on Bathroom Tiles

Standard emulsion will not bond to glazed tiles. You need a specialist system designed for hard, non porous surfaces and humid environments.

The main options used by professionals are:

• Two pack epoxy tile paint
• Single pack acrylic tile paint with primer
• Specialist bathroom paint systems with integrated sealer

Two pack epoxies provide the most durable finish. They chemically cure and form a tough coating that resists water and abrasion. They are more expensive and have a shorter working time once mixed.

Single pack systems are easier for DIY use, but require stricter prep and often a separate bonding primer.

If you are unsure about finishes, this guide explains the differences clearly: Choosing the Right Paint Finish for Different Surfaces.

You should also consider moisture performance. Bathrooms generate high humidity and poor product choice leads to failure. This resource covers common pitfalls: Moisture Resistant Paint in UK Homes Explained What It Does, Where It Works and Common Mistakes to Avoid.

Buy primer, paint and any clear protective coat as one compatible system wherever possible. Combining products from different manufacturers can lead to wrinkling, slow curing or poor adhesion. A general purpose bathroom wall paint is designed for plaster, not glazed tiles, even if it is described as washable or resistant to mould.

Colour and sheen matter as well. Satin and gloss finishes are easier to wipe clean, but they highlight roller marks, chips and uneven grout. Matt coatings can look softer, although only products specifically approved for tiles and bathroom humidity should be used.

How to Estimate Paint Coverage

Measure the width and height of each tiled wall in metres, then multiply the two figures to find its area. Add the wall areas together and deduct large doors or windows. Small fittings are normally left in the calculation because grout joints, cutting in and roller losses consume extra material.

Check the stated coverage on the tin. Many tile coatings cover around 8 to 12 square metres per litre for one coat on a smooth surface. Textured tiles, deep grout lines and porous repairs reduce that figure.

For example, a bathroom with 10 square metres of tiled wall receiving two coats needs 20 square metres of coverage. At 10 square metres per litre, the basic requirement is 2 litres. Add around 10 per cent for the roller, brush, grout joints and touch ups, giving a practical requirement of approximately 2.2 litres.

Primer should be calculated separately because its coverage rate may differ. Always round up to available pack sizes. Buying all topcoat tins from the same batch reduces the risk of a slight colour variation.

Two pack products need further planning. Once the components are combined, the mixed paint has a limited pot life and cannot be returned to the tin. For a small wall, choose smaller packs or mix only the permitted proportion by weight or volume. Never guess the ratio, as incorrect mixing can leave the coating soft or sticky.

Tools and Materials Checklist

Before starting, gather everything you need. Stopping halfway through can compromise the finish.

• Sugar soap or degreasing cleaner
• Tile grout cleaner or mould remover
• Fine abrasive paper, 120 to 240 grit
• Bonding primer suitable for tiles
• Tile paint or epoxy system
• Foam rollers for smooth finish
• Angled brush for edges and grout lines
• Masking tape and dust sheets
• Sealant for edges if required
• Protective gloves and good ventilation

Always follow manufacturer instructions. Many tile paint systems in the UK have specific temperature and humidity ranges for correct curing.

It is also useful to have lint free cloths, a vacuum cleaner, a sharp sealant removal tool, a cartridge gun and spare roller sleeves. A bright portable work light helps reveal grease, sanding marks and missed grout lines. Electrical equipment used in a bathroom must be kept away from water and connected safely.

Safe Product Handling

Read the label and safety data for every cleaner, primer, paint and sealant before work begins. Wear suitable gloves and eye protection. Abrading tiles can create fine dust, so use appropriate respiratory protection and vacuum extraction where practical.

Maintain ventilation while using solvent based primers or two pack coatings. Open windows and run suitable extraction, but avoid a strong draught that carries dust onto wet paint. Keep products away from flames, cigarettes and other ignition sources where the label identifies a flammability risk.

Measure and mix reactive coatings exactly as instructed. Do not add thinners unless the manufacturer permits it. Avoid getting epoxy products on the skin, and change contaminated gloves rather than continuing to work in them.

Keep chemicals in their original labelled containers and away from children and pets. Do not pour leftover paint, solvent or concentrated cleaner down a sink or outside drain. Allow small permitted residues to cure where directed, or take unwanted products to a local household waste recycling centre that accepts paint and chemicals.

If old tile adhesive, backing boards or textured coatings are likely to date from before 2000, stop before carrying out intrusive sanding or removal if there is any suspicion of asbestos containing material. Seek advice from a competent asbestos surveyor rather than disturbing an unknown product.

Learn how to paint bathroom tiles with this step by step method

1. Deep Clean and Degrease

Start with a thorough clean. Bathrooms collect soaps, shampoos and limescale, all of which prevent paint adhesion.

Use a strong sugar soap solution and rinse well. For limescale, use a mild acidic cleaner sparingly and neutralise afterwards. Mould should be treated with a fungicidal wash in line with Health and Safety Executive guidance.

Never mix a bleach based mould treatment with an acidic limescale cleaner. The combination can release toxic chlorine gas. Rinse the tiles thoroughly between different products, ventilate the room and follow the manufacturer’s safety instructions for application, contact time and protective equipment.

Clean from the top of the wall downwards and give extra attention to the area around taps, soap dishes and the lower rows above a bath. Silicone polish, hair products and aerosol residues can be difficult to see but may cause localised paint rejection.

After using the required cleaning products, rinse with clean water more than once. Wipe a dry white cloth over several tiles. If the cloth picks up dirt or feels greasy, repeat the cleaning process.

Allow tiles to dry fully. This may take 24 hours in a poorly ventilated bathroom.

2. Remove Old Silicone Sealant

Paint will not bond reliably to silicone. Remove sealant from bath edges, shower trays, internal corners and around sanitary fittings before sanding or priming.

Cut along both sides of the bead with a suitable sealant removal tool, taking care not to scratch the bath or tile glaze. Pull away the main bead, then remove remaining traces with a compatible silicone remover. Follow its stated contact time and clean off all residue.

Do not simply paint up to dirty or mould stained silicone and then apply a new bead over it. Old silicone can prevent the new sealant from adhering, while concealed mould may return around the edge.

The replacement sanitary silicone is normally applied after the painted finish has fully cured. This keeps the flexible joint independent of the paint film. Choose a mould resistant bathroom grade product and allow its stated curing period before exposing it to water.

3. Repair Grout and Joints

Check grout lines carefully. Damaged grout will continue to break down under paint.

Rake out loose sections and regrout as needed. A fresh grout base ensures a uniform finish and prevents moisture sitting behind the coating. This process is explained in detail here: How to Regrout Bathroom Tiles in a UK Home Remove Old Grout Clean Joints and Seal for a Fresh Finish.

Leave grout to cure fully, usually 24 to 48 hours depending on product.

Flexible corners should not be filled with rigid grout if movement is expected. Use the joint treatment specified for the bathroom construction and coating system. Repair small chips with a compatible filler, sand them smooth and remove every trace of dust.

4. Lightly Abrade the Surface

Glazed tiles are smooth and must be keyed for paint to grip. Use fine abrasive paper to dull the surface. You are not removing the glaze entirely, just creating a slight texture.

Wipe away all dust with a damp cloth and let it dry.

A sanding pad often reaches grout lines and tile edges more evenly than a large sheet of abrasive paper. The completed surface should have a consistent dull appearance without deep scratches. Change the abrasive when it becomes clogged with residue.

Vacuum the room after sanding, including ledges, fittings and the top of the bath. Follow with a lint free damp cloth. Dust left in corners can be dragged into the coating and produce rough patches.

5. Mask and Control the Working Conditions

Mask fittings, painted walls and sanitaryware with good quality tape. Press the edge down firmly, but do not leave tape in place longer than the manufacturer recommends. Remove or loosen accessories where this can be done safely, as painting around brackets often leaves visible ridges.

Most systems perform best in a stable room and surface temperature of roughly 10 to 25 degrees Celsius, although the product instructions take priority. Very cold tiles can attract condensation even if the room air feels warm. High humidity slows evaporation and may affect both adhesion and sheen.

Heat the room gently in advance if required. Avoid directing a fan heater at the wall, as this can dry the surface too quickly and blow dust into the paint. Do not start immediately after a bath or shower. The tiles, grout and room air should be dry.

6. Apply a Bonding Primer

Primer is where many jobs fail. A proper tile primer chemically bonds to the surface and provides a base for the topcoat.

Apply evenly with a foam roller. Cut in around edges with a brush. Avoid heavy coats which can run.

Drying times vary, but typically range from four to twelve hours in UK conditions.

Work across a manageable area, brushing grout lines first and lightly rolling the tile faces before the brushed coating begins to set. Watch for paint collecting along the lower edge of each tile. Do not repeatedly roll primer once it becomes tacky.

Some primers have a maximum time during which the topcoat must be applied. If this window is missed, another light abrasion or primer coat may be required. Follow the technical instructions rather than relying only on whether the surface feels dry.

7. Apply the Tile Paint

Apply the first coat thinly and evenly. Do not try to achieve full coverage in one pass.

Allow to dry as specified. For most systems, this is between four and twenty four hours.

Apply a second coat, and in some cases a third. Two pack systems may require mixing fresh batches for each coat.

Use a clean roller sleeve for the finish coat. Maintain a wet edge and complete each wall or logical section without long pauses. Excessive pressure can create bubbles, while repeated rolling can disturb paint that has started to cure.

Check the coating from different angles under good light. Thin patches often appear over grout or strongly patterned tiles. Apply additional coats only where the system allows them, and observe the stated minimum and maximum recoating times.

8. Curing and Ventilation

This stage is often overlooked. Paint may feel dry to touch but remain soft underneath.

Keep the bathroom well ventilated and avoid heavy moisture exposure for at least five to seven days. In colder UK homes, allow longer.

Using the room too soon is one of the fastest ways to ruin the finish.

Keep condensation away from the surface throughout the curing period. If the bathroom is the only one in the property, plan the job so alternative washing arrangements are available. A quick shower still produces enough steam and splashing to mark a partly cured coating.

Do not lean bottles, tools or a shower screen seal against the new finish. Avoid cleaning it during the curing period. Two pack coatings may continue gaining hardness for seven days or more, and low temperatures can extend this considerably.

9. Replace the Silicone

Once the coating has reached the cure stage specified by its manufacturer, apply new sanitary silicone to the bath, shower tray, corners and other required movement joints.

Both surfaces must be clean and dry. Apply a continuous bead, tool it promptly and remove masking tape before a skin forms. Avoid using washing up liquid as a tooling aid unless the sealant manufacturer allows it, as residue can affect adhesion.

Most sanitary silicones need at least 24 hours before direct water exposure, although some products require longer. Check the cartridge and combine this period with the paint curing time when planning when the bathroom can return to full use.

Costs of Painting Bathroom Tiles in the UK

Costs vary depending on whether you do the work yourself or hire a decorator.

Item	Typical Cost
Tile paint system	£30 to £80 per 750ml to 1L
Primer	£20 to £50
Tools and materials	£25 to £70
Professional labour	£180 to £300 per day
Average small bathroom total	£150 DIY or £400 to £900 with labour

A professional will usually complete a standard bathroom in one to two days, with return visits if multiple coats are needed.

DIY Cost and Timeframe

A basic DIY job on a small area may cost around £100 to £180 if the tiles need little repair and you already own some tools. A larger bathroom using premium primer, two pack paint, new silicone and better protective equipment is more likely to cost £180 to £350.

Allow around two to four days for cleaning, repairs, priming and painting, spread around product drying times. Full use may not be possible for five to ten days. The hands on working time can be 12 to 20 hours, depending on the number of grout lines and fittings.

Professional Cost and Timeframe

Professional quotations commonly range from £400 to £900 for a small or average bathroom. Detailed preparation, extensive grout repairs or a two pack specification can take the total to £1,000 or more. London and parts of the South East may attract higher day rates.

A decorator may carry out preparation and the first coatings over one or two working days, then return for later coats or silicone. The elapsed programme can still be four to ten days because curing periods cannot be shortened safely.

Professional painting costs more than DIY work, but it brings better dust control, efficient surface preparation and experience with reactive coatings. It also reduces the chance of buying incompatible products. Ask the contractor to state the exact system, number of coats, repairs included and required curing period in the quotation.

Comparison with Retiling

Retiling a small bathroom wall area can cost roughly £900 to £2,500 once labour, tiles, adhesive, grout, disposal and minor background work are included. Full bathroom retiling can be considerably more, particularly where sanitaryware must be removed or waterproof boards need replacement.

Painting therefore has a lower initial cost and less demolition. Retiling normally offers a longer service life and is the better investment where the existing installation is damaged or exposed to constant water.

Where Painted Tiles Work Best

From experience, these areas give the best results:

• Splashbacks behind sinks
• Half tiled bathroom walls
• Guest bathrooms with light use
• En suites with good ventilation

Areas to avoid or treat with caution include inside shower enclosures, around power showers and on floors.

Painted tiles are particularly effective where most surfaces are outside direct splash zones and the room has reliable mechanical extraction. They can also work well behind a basin if standing water is wiped away and the perimeter silicone is maintained.

Check the paint manufacturer’s definition of suitable wet areas. Water resistant does not necessarily mean approved for continuous immersion or repeated direct shower spray.

Building Regulations and Safety Considerations

Painting tiles itself does not require planning permission or building control approval. However, bathroom work often overlaps with regulated areas.

If you are working near electrical fittings, ensure compliance with Part P of the Building Regulations. Any new or altered electrical work in bathrooms must be carried out by a competent person, often registered with NICEIC or a similar body.

Ventilation is also covered under Part F. Poor ventilation leads to condensation and paint failure. Extractor fans should provide adequate air changes, typically at least 15 litres per second for bathrooms.

Do not remove sockets, switches, fans or lights simply to make painting easier unless you are competent to do so and the electrical supply has been safely isolated. Bathrooms contain defined electrical zones that affect the type and location of equipment.

If a new fan or electrical circuit is required, use a suitably qualified electrician. Painting will not compensate for inadequate ventilation, and leaving the door open is not a reliable substitute for correctly designed extraction.

Troubleshooting Peeling, Bubbling and Other Defects

Peeling Paint

Peeling usually points to contamination, trapped moisture, inadequate abrasion or an unsuitable primer. Do not paint over loose edges. Scrape the failed coating back to a firmly bonded area, identify the cause and allow the surface to dry.

Feather the sound paint edge with fine abrasive paper, clean the exposed tile and rebuild the specified primer and topcoat system. If peeling is widespread, complete removal and starting again is more reliable than repeated local repairs.

Bubbles During Application

Small bubbles can result from rolling too quickly, pressing too hard or using a foam roller that is not suited to the coating. They can also form where the product is shaken rather than stirred.

Stop overworking the area. Some bubbles level while the paint remains wet. If they cure into the finish, allow the coat to harden, abrade it smooth and apply another thin coat within the permitted recoating process.

Bubbles Appearing After Curing

Later bubbling is more serious and often indicates moisture behind the coating. Check grout, silicone, pipe penetrations and the reverse side of the wall for leaks. The moisture source must be repaired before loose paint is removed and the area recoated.

Sticky or Soft Paint

Softness can result from cold conditions, high humidity, excessive film thickness or an incorrect ratio in a two pack product. Give the coating the full curing time in suitable conditions. If it remains sticky beyond the manufacturer’s stated period, contact the technical department before adding another coat.

Roller Marks and Uneven Sheen

Visible lap marks are often caused by allowing one section to dry before adjoining paint is applied. Uneven primer absorption, excessive brushing and variable coat thickness can also affect sheen.

Once fully dry, lightly abrade the wall and apply a uniform coat across the complete section. Keep a wet edge and avoid touching up isolated patches in a gloss finish unless the manufacturer advises that this will blend successfully.

Common Mistakes to Avoid

Most problems with painted tiles come down to shortcuts. Here are the issues seen most often on UK jobs.

• Skipping proper cleaning, leaving soap residue behind
• Painting over damp tiles
• Not using a dedicated tile primer
• Applying coats too thickly
• Ignoring curing time and using the bathroom too soon
• Poor ventilation during and after application
• Painting over failing grout

Another mistake is expecting paint to behave like factory glazed tiles. It will not be as hard wearing, and needs gentle cleaning methods.

Leaving old silicone in place is another common cause of untidy edges and early failure. Paint may initially appear to cover silicone, but it can separate as soon as the flexible joint moves.

Starting without enough paint can also produce colour or sheen differences if a later tin comes from another batch. Calculate the area in advance and keep a small amount of correctly stored product for future repairs.

Maintenance and Longevity

To keep painted tiles looking good, treat them carefully.

• Use non abrasive cleaners
• Avoid bleach heavy products unless specified as safe
• Maintain silicone sealant to prevent water ingress
• Ventilate the room after showers

Expect to touch up high wear areas over time. Keeping leftover paint is always a good idea for this reason.

Use a soft cloth or non scratch sponge rather than scouring pads. Avoid leaving shampoo bottles or wet cloths pressed against painted surfaces. Wipe standing water from ledges and inspect silicone joints regularly for separation or mould.

Store leftover paint in its original labelled container, tightly sealed and protected from frost or excessive heat. Two pack paint that has already been mixed cannot be stored for later use. Record the brand, colour and batch information in case replacement material is needed.

Alternatives to Painting Tiles

If you are unsure about painting, there are other options that may be more durable.

• Tile overlays or wall panels
• Replacement of only visible rows of tiles
• Full retiling with modern large format tiles

Wall panels in particular have grown in popularity in the UK due to ease of installation and water resistance.

Panels can cover large areas with fewer joints, although the existing wall must still be sound and suitable for the chosen fixing method. Trims, seals and penetrations around controls must be installed correctly to keep water out.

Partial retiling can be economical if matching tiles are available and the damage is limited. Full replacement is preferable where waterproofing has failed, tiles are loose or the bathroom is being altered substantially.

FAQ

Can you paint tiles in a shower area

You can, but it is not the most durable solution. Even high end epoxy coatings struggle with constant water exposure and cleaning. Expect reduced lifespan and more maintenance. For long term reliability, retiling or waterproof panels are better choices.

How long does tile paint last in a bathroom

Outside direct water contact, a well applied system can last three to five years. In high moisture or high wear areas, this may reduce to one to three years. Longevity depends heavily on preparation and ventilation.

Do you need to seal painted tiles

Most modern tile paint systems include a built in seal. Some require a separate topcoat. Always follow manufacturer guidance. Adding an incompatible sealer can cause peeling.

Can you paint floor tiles

It is possible using specialist floor coatings, but standard tile paint is not suitable. Floors see heavy wear, and coatings tend to scuff and chip quickly. In most cases, replacement or overlay systems are more cost effective long term.

How long before you can use the bathroom after painting tiles

Light use may be possible after 48 hours, but full curing often takes five to seven days in UK conditions. Avoid steamy showers during this period to prevent failure.

Can you paint over grout at the same time

Most tile paint systems can cover sound, clean grout, giving the wall one uniform colour. Deep or heavily textured joints may need brushing before the tile faces are rolled. Loose, cracked or mould contaminated grout must be repaired first.

Can you paint over silicone sealant

No. Standard tile coatings do not adhere reliably to silicone. Remove the old bead, complete the painting process and apply new sanitary silicone once the coating has cured.

Why is my tile paint peeling

The usual causes are grease, soap residue, moisture, insufficient abrasion, missing primer or using the bathroom before the coating cured. Remove loose material and correct the underlying cause before attempting a repair.

Do bathroom tiles need sanding before painting

Most glazed tiles need light abrasion to create a key, even where a high adhesion primer is used. Follow the coating instructions because some specialist systems specify their own preparation method. The aim is a uniformly dull surface rather than deep scratches.

Final Thoughts

Painting bathroom tiles can be a smart short term upgrade if done properly. The finish depends far more on preparation and product choice than the actual painting. Take shortcuts and it will fail. Treat it like a professional job and it can transform a dated bathroom for a fraction of the cost of retiling.

If you would rather leave it to a professional or want advice tailored to your bathroom, you can post a job on BookaBuilderUK and get free quotes from vetted local tradespeople.