Home/ Services/ Grout Cleaning London
Grout Restoration & Colour Sealing

Black grout,
white again.
Without re-tiling.

Result 10–15 years
Versus regrout 75% cheaper
Sealing Included
Quote Free & Fixed
10+
Years in trade
£2m
Public liability
London
Wide coverage
Sealed
Every job
01
Why grout darkens

It’s not dirty.
It’s porous.

Grout is essentially compressed cement. It absorbs everything that touches it — and bleach only hides that.

Every drop of water, every cooking splatter, every soap residue and every footprint sinks into grout rather than sitting on top of it. Over months and years, those layers of fine grime build up below the visible surface, where domestic mops cannot reach. The result is the floor most London homeowners are familiar with: clean tiles, dirty lines.

Worse, repeated bleach treatments erode the cement structure of grout itself — making it more porous, not less. Each application looks bright for a week and then darker than before. The only durable fix is removing the embedded dirt under pressure, then sealing the porous surface so it stops absorbing.

02
Our method

Clean. Then protect.

Cleaning without sealing lasts months. Cleaning with sealing lasts years. We do both as standard.

i.

Test & assess

We identify your grout type — sanded, unsanded, epoxy, or natural cement — and test a small area. Some grout responds to deep cleaning; severely stained grout may need colour sealing instead.

ii.

Alkaline pre-treatment

A high-alkaline solution is applied to dwell on the grout lines, breaking down embedded grease, soap scum, mould residue and biological staining at a molecular level.

iii.

Rotary extraction

High-pressure hot water is delivered through a rotary tool that scrubs and vacuums simultaneously. The dirt and the dirty water leave together — nothing soaks back in.

iv.

Seal or colour seal

Penetrating sealer for grout in good condition, full colour sealing for grout that will not return to a uniform shade. Either way, the result is locked in.

03
What we do

The four jobs
grout actually needs.

Different grout problems need different fixes. We offer all of them — and tell you which one your floor needs, honestly.

Deep clean

Pressurised extraction with alkaline pre-treatment. Restores grout to its original shade where staining is surface-level.

Colour seal

Pigmented sealer locked into grout lines. Restores uniform colour, waterproofs the joint, lasts 10–15 years.

Mould treatment

Antifungal penetration into bathroom and shower grout. Treats the cause, not just the visible spots.

Regrouting

For grout that is cracked, missing or structurally failed. We remove and replace rather than disguise.

04
Where it matters most

Kitchens. Bathrooms.
Showers. Hallways.

High-moisture and high-traffic rooms see grout failure first. They’re also where the visual difference is most dramatic.

Kitchens. Cooking oils mist across floors and walls, settling into grout near hobs, splashbacks and behind cookers. Even an immaculately cleaned kitchen develops yellowing grout within a year if it’s never sealed.

Bathrooms & showers. Constant moisture saturates unsealed grout, creating perfect conditions for mould and biological staining. Once it’s in, only deep treatment — not surface bleach — resolves it.

Hallways & entrances. Foot traffic carries street grit directly into grout lines. After two or three years the grout looks several shades darker than the tile around it.

  • Canary Wharf
  • City of London
  • Shoreditch
  • Docklands
  • Stratford
  • Bethnal Green
  • Chadwell Heath
  • Romford
  • Ilford
  • Greenwich
  • Hackney
  • Islington
  • Wapping
  • Limehouse
  • Mayfair
  • Soho
  • Chelsea
  • Knightsbridge
05
Recent work

Before & after.

No filters, no staging. The difference is the method — and the seal.

06
Why No More Dirt

Four honest reasons.

No high-pressure sales. No call-out fees. No surprise costs after the work starts.

We’ll tell you if it’s not worth it

Some grout is too far gone to deep-clean and is better colour-sealed or replaced. We will tell you which honestly, even when it costs us the upsell.

Sealing is included, not extra

Most competitors clean and walk away — leaving porous grout to re-stain in months. Penetrating seal is part of our standard process, not a bolt-on.

Colour matching for sealing

We hold a range of pigmented grout sealers to match common UK grout colours: white, ivory, beige, grey, charcoal, anthracite. You get the original colour back, not just lighter.

Fixed quotes, properly costed

A free on-site assessment, then a written quote. No call-out fee. The price is the price — whether the work takes us two hours or six.

07
Frequently asked

The honest answers.

If your question isn’t here, just call — we’ll tell you straight.

Can blackened grout actually be made white again?
In most cases, yes. Years of grease, soap residue and traffic film sit on the surface of grout — not embedded in the cement itself. Deep extraction lifts the dirt and the original colour returns. Where staining is genuinely permanent, grout colour sealing restores a uniform finish without re-tiling.
How much does grout cleaning cost in London?
Standalone grout cleaning typically starts from £3 per square metre, with colour sealing added at £5–8 per square metre depending on grout line width and floor area. We provide a fixed written quote after a free on-site assessment.
What is grout colour sealing and is it worth it?
Colour sealing is a pigmented sealer applied directly to grout lines after cleaning. It restores a uniform colour, waterproofs the grout, and resists future staining for 10–15 years. For bathrooms, kitchens and high-traffic floors it is far cheaper than re-grouting and lasts longer.
Is it cheaper to clean grout or replace it?
Cleaning is dramatically cheaper. A full re-grout of a bathroom can cost £400–800; professional grout cleaning and sealing typically costs a quarter of that and lasts a decade. Re-grouting is only needed when grout is cracked, missing or structurally failed — not when it is simply discoloured.
How long does grout cleaning last?
An unsealed clean lasts 6–12 months in a kitchen or bathroom before noticeable re-discolouration. Sealed grout stays clean for 3–5 years. Colour-sealed grout stays uniform for 10–15 years with normal use.
Can you remove black mould from bathroom grout?
Yes. We treat the mould at its source with antifungal agents that penetrate the porous grout — not bleach, which only lightens the surface and returns. After treatment, we seal the grout to prevent moisture absorption and stop the mould returning.
Do I need to seal grout after cleaning?
Strongly recommended. Unsealed grout is essentially porous cement — it absorbs everything that touches it. A penetrating sealer applied immediately after cleaning extends the result by years and is included in most of our jobs as standard.
Ready when you are

Stop bleaching it.
Let’s fix it.

Free on-site assessment. Fixed written quote. No call-out fee. Most quotes booked the same week.