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+44 7385 775121
KING OF STONE

Service

Slate restoration

King of Stone strips old sealers, deep cleans and re-seals slate floors across London and the M25, returning kitchens and hallways to a rich, even colour. Send photos through our quote form or on WhatsApp, or call +44 7385 775121, for a free fixed quote.

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Common problems we fix

What we solve

  • Patchy, peeling topical sealers
  • White efflorescence bloom
  • Grey, dusty appearance
  • Sticky residue from floor polishes
  • Dirty grout lines
  • Flaking (spalling) surface

About slate restoration

Slate is tough but its natural cleft surface holds dirt and old coatings. When slate turns patchy, grey or sticky, the culprit is usually a worn topical sealer. We strip it back, deep clean and re-seal so the stone returns to a rich, even colour.

We generally avoid glossy surface coatings on slate floors — they look good for months, then scratch and peel. Penetrating sealers protect from within and are easier to maintain.

Pricing

Every job is quoted at a fixed price after a free assessment. Projects under 100 m² are priced per project; projects over 100 m² are priced per m². Send photos for a fast indicative price.

Results/ 02

Before & after, side by side

Deep cleaning, honing and polishing bring the stone’s natural finish back to life.

Terrazzo panel lobby floor with granite border after deep cleaning, honing and polishing
Terrazzo panel lobby floor with granite border before deep cleaning, honing and polishing
BeforeAfter
Terrazzo panel floor with granite border · Deep clean, hone & polish
Grey-veined marble room floor after grinding and high polishing
Grey-veined marble room floor before grinding and high polishing
BeforeAfter
Grey-veined marble room · Grinding & high polish
Tumbled limestone living room floor after cleaning, honing and sealing
Tumbled limestone living room floor before cleaning, honing and sealing
BeforeAfter
Tumbled limestone living room · Clean, hone & seal
Cream marble hallway floor with black cabochons after full restoration
Cream marble hallway floor with black cabochons before full restoration
BeforeAfter
Cream marble hallway with black cabochons · Full restoration
Carrara marble kitchen island after etch removal and polishing
Carrara marble kitchen island before etch removal and polishing
BeforeAfter
Carrara marble kitchen island · Etch removal & polish
White marble retail floor after honing and polishing
White marble retail floor before honing and polishing
BeforeAfter
White marble retail floor · Hone & polish
Black terrazzo corridor with strip inlays after grinding and polishing
Black terrazzo corridor with strip inlays before grinding and polishing
BeforeAfter
Black terrazzo corridor with strip inlays · Grind & polish
Terrazzo floor after restoration and polishing
Terrazzo floor before restoration and polishing
BeforeAfter
Terrazzo floor · Restoration & polish
Palladiana (crazy-paving) marble floor after restoration and polishing
Palladiana (crazy-paving) marble floor before restoration and polishing
BeforeAfter
Palladiana (crazy-paving) marble · Restoration & polish
Black marble corridor after grinding and polishing
Black marble corridor before grinding and polishing
BeforeAfter
Black marble corridor · Grind & polish

FAQ

Slate restoration: questions

Why has my slate floor gone patchy or grey?

Usually because a topical sealer has worn unevenly, trapping dirt and leaving cloudy patches. White deposits can also be efflorescence, salts drawn up from the subfloor. Both are treatable without replacing the tiles.

What does slate restoration involve?

We strip the old sealer, deep clean the stone and grout, treat any efflorescence, and allow the floor to dry. It is then sealed with a penetrating sealer in a natural matt or colour-enhanced finish.

Can slate be polished?

Honed slate can be refined to a soft sheen, but riven (textured) slate is usually cleaned and sealed rather than polished.

How long does slate restoration take?

A kitchen or hallway usually takes one to two days, with drying time between stripping and sealing. Very damp floors can need longer before sealing.

Is it messy, and does furniture need moving?

Stripping is a wet process, but residue is extracted as we go and nearby surfaces are protected. Loose furniture needs to be cleared from the area.

How should slate be cleaned afterwards, and how is it priced?

Use a pH-neutral cleaner and avoid glossy surface coatings, which scratch and peel. Projects under 100 m² are priced per job; projects over 100 m² are priced per m², and you get a fixed written quote after a free assessment.

Where we offer slate restoration

Free quote

Get a quote for slate restoration

Share a few details and photos. We’ll come back with honest advice and a fixed price — no obligation.

  • — Fully insured, residential and commercial
  • — Fixed quotes: per project under 100 m², per m² above
  • — London and towns around the M25

Prefer to talk? +44 7385 775121

Or send photos on WhatsApp

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Services

Other services

From a single etched worktop to a hotel lobby, we restore, protect and repair natural stone and polished concrete.

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