Grout for Bathroom Tiles

This page brings together grout options for bathroom walls and floors, suited to porcelain, ceramic and natural stone tiles across a range of joint sizes and applications.

Choose from multiple colours and formulations — from standard flexible cement grouts to high-performance options for showers and wet rooms — to complement your tile choice and cope with wet areas.

Ordering grout alongside tiles and adhesive keeps your project on track from day one. Browse our full bathroom tile range to find the tiles that work alongside these grout products.

How to choose bathroom tile grout

Grout choice directly affects both the long-term performance and the finished appearance of tiled bathroom walls and floors — getting it right from the start saves work later.

• Cement-based flexible grout suits most bathroom floor areas and standard wall applications where movement tolerance and basic water resistance are needed.
• Epoxy or high-performance grout is the better choice for heavily used showers and wet rooms, offering extra strength and very low porosity in continuously wet conditions.
• Matching grout colour to the tile creates a quieter, more unified surface; contrasting grout draws attention to the individual tile shape and grid pattern.
• Joint width shapes the look: narrower joints around 2–3mm suit smooth modern tiles; wider joints allow for slight size variation in textured or handmade styles.
• On bathroom floors with underfloor heating, use a flexible grout that works alongside a compatible flexible adhesive to handle thermal movement without cracking over time.

Always check individual product descriptions — such as Wide Joint Floor Grout — for compatible tile types, recommended joint widths and coverage figures before placing your order.

Choosing grout colours for your bathroom

Grout colour shapes how a tiled surface reads as a whole — it can sit quietly in the background or become an active part of the design, depending on what you choose.

• White or light grout paired with white tiles keeps the surface feeling clean and open, particularly useful in smaller or lower-lit bathrooms.
• White grout with black tiles produces a sharp, graphic contrast that draws the eye to the tile pattern and grid layout.
• Grey grout with mid-tone tiles is a practical everyday choice — it hides soap marks and dust without losing a modern, considered feel.
• Dark or black grout used around light tiles frames each tile individually, creating a bold structured grid across the wall or floor surface.
• Decorative options including glitter or coloured grout add personality to feature walls, alcoves and shower niches without committing the entire room to a statement finish.

If you're considering the contrast approach, our article on why white grout with black tiles looks amazing explains the visual reasoning behind one of the most consistently popular bathroom colour combinations.

Wall and floor grout in bathrooms

Grout for bathroom walls and floors must be matched to the joint width, the level of foot traffic and the degree of water exposure specific to each area of the room.

• Typical bathroom wall tile joints sit around 3mm; floor tiles commonly use 3–5mm joints — always refer to the tile and grout manufacturer's guidance for your specific combination.
• Flexible wide-joint grouts are well-suited to bathroom floors and larger joint widths where movement from underfloor heating or building settlement is a factor.
• Standard wall grouts with a smoother consistency suit ceramic and porcelain wall tiles in lower-stress applications away from direct water jets.
• In shower enclosures, joints must be fully filled without any voids, and grout needs its full curing time before the shower is brought back into use.
• Sealing porous cement-based grout in lighter-coloured or frequently used bathrooms reduces staining and makes routine cleaning considerably more straightforward.

Before finalising your order, the How Much Grout Do I Need? guide walks through the quantity calculation based on tile size, joint width and total surface area.

Types of grout for bathroom tiles

Different grout formulations are designed for different tile joints and bathroom areas — matching the grout type to the application affects both performance and long-term appearance.

Bathroom tile grout prices

Grout is typically sold in bags or tubs, and when combined with adhesive, material costs for standard bathroom tiling projects often average around £10 per m² across both products.

Always factor grout into the overall tiling budget and order slightly more than calculated — having the same batch for future repairs avoids the problem of a discontinued or mismatched colour shade.

Caring for grouted bathroom tiles

Correct curing, regular cleaning and occasional sealing where recommended keep bathroom grout performing well and looking fresh for considerably longer than neglected joints tend to.

• Allow the full manufacturer-recommended cure time before using showers or wet areas — using them too soon weakens joints and shortens the grout's lifespan.
• Clean grout lines with a mild bathroom cleaner and soft brush; avoid acidic or bleach-based products that break down cement grout over repeated use.
• Wipe down high-use surfaces regularly to stop limescale and mould from taking hold in grout joints, where they become increasingly difficult to clear.
• Apply a grout sealer to porous cement-based grout where recommended — particularly worthwhile with light colours in family bathrooms that see heavy daily use.
• Inspect grout joints periodically and repair any cracks or gaps promptly; missing grout allows water behind tiles, which can cause adhesion failure and wider damage.

A consistent, low-effort cleaning routine is all it takes to keep grout joints looking well-maintained and to protect the tiled surfaces they hold in place.