How much does bathroom tiling cost per m² in the UK?

Bathroom tiling labour typically costs £35-45 per m² in the UK, depending on tile size, pattern complexity and your location. London and the South East tend to be at the higher end. This rate usually includes surface preparation, adhesive application, tile cutting and grouting. Very large format tiles (600x600mm+) or intricate mosaic work may cost more due to the additional skill and time required.

How much wastage should I allow for bathroom tiles?

A 10% wastage allowance is standard for straightforward rectangular rooms with simple layouts. Increase this to 15% for rooms with many cuts around windows, niches, or pipework. For diagonal or herringbone patterns, allow 15-20% wastage. Always keep a few spare tiles for future repairs, as tile batches can vary in shade.

What adhesive should I use for bathroom tiles?

Flexible (S1 rated) adhesive is recommended for bathroom walls and floors as it accommodates slight movement from temperature and moisture changes. Use rapid-set adhesive if you need to grout within 3 hours. Standard cement-based adhesive is suitable for stable substrates only. For tiles over 300x300mm on walls, BS 5385 recommends using a combined method (buttering the back of the tile and the wall).

How many 25kg bags of adhesive do I need?

A 25kg bag of tile adhesive typically covers 4-5 m² at a 6mm bed thickness using a notched trowel. Larger tiles with bigger notch trowels (10-12mm) will use more adhesive. As a rule of thumb, allow one 25kg bag per 5 m² for standard wall tiles and one per 4 m² for large format floor tiles.

Do I need to waterproof (tank) my bathroom before tiling?

Yes, wet areas such as showers and around baths should be tanked with a liquid waterproofing membrane before tiling. This is required under BS 5385-4 for areas subject to direct water exposure. Products like BAL Tank-it or Mapei Mapelastic are commonly used. Tanking adds approximately £15-25 per m² to the overall cost but prevents costly water damage to the substrate.

TradeCalculator.co.uk

Bathroom Tiling Cost Calculator — Walls, Floors & Labour

Calculate bathroom tiling costs for walls and floors including tiles, adhesive, grout and labour.

Room Length

Internal room length

Room Width

Internal room width

Ceiling Height

Floor to ceiling height

Tile SizeSelect tile dimensions

How We Calculate This

This calculator estimates the total cost of tiling a bathroom including wall tiles, floor tiles, adhesive, grout and labour based on UK trade rates.

How it works

Wall area: Calculated from room perimeter x ceiling height, adjusted by wall coverage percentage
Floor area: Room length x width, included if floor tiling is enabled
Tiles needed: Total area divided by individual tile area, plus wastage allowance
Adhesive: 25kg bag covers approximately 5 m² at 6mm bed depth
Grout: 5kg bag covers approximately 8 m² for standard tiles, less for smaller formats
Labour: Based on UK average of £40/m² including preparation and grouting

Rates are based on 2025/2026 UK trade prices. Actual costs will vary by region, tile type, substrate condition and pattern complexity.

Frequently Asked Questions

Related Calculators

Bathroom Suite Spacing Calculator

Check bathroom suite clearances between fittings and walls per UK building regulations.

En-Suite Minimum Size Calculator

Check whether your room dimensions can fit an en-suite with desired fittings and clearances.

Kitchen Extraction Calculator

Calculate kitchen extraction rates for cooker hoods and mechanical ventilation per Part F.

Kitchen Plinth Calculator

Calculate kitchen plinth lengths, clips and end caps for base unit runs.

Wall Tile Calculator

Calculate wall tiles, adhesive and grout for bathrooms and kitchens.

Last updated: March 2026

All calculations are estimates. Verify with your supplier.