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Natural stone is the backbone of London’s architectural heritage. From the iconic Portland Stone of the West End and the warm Bath Stone dressings of Georgian terraces to the rugged York Stone steps of Victorian homes, stone defines the character of our city. However, stone is a porous, “living” material. Over decades, it absorbs atmospheric soot, carbon pollutants, and biological growth that not only dulls its appearance but can lead to long-term structural decay.
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London’s history of heavy traffic and historical industrial pollution has left a unique “carbon crust” on many buildings. This black sulfation layer is more than an aesthetic issue; it acts as a seal that traps moisture inside the stone.
When moisture is trapped, it leads to spalling (where the stone face flakes off) and sub-florescence (internal salt crystallization). Professional stone cleaning restores the stone’s natural permeability, allowing the building to “breathe” again. This is essential for the longevity of any stone structure, especially Grade I and Grade II listed buildings.
We use the industry’s most respected, heritage-safe systems to ensure a perfect finish every time
The DOFF system is the gold standard for stone restoration. It uses superheated water (up to 150°C) but at very low pressure.
For stubborn carbon crusts or limescale, we utilize the TORC system. Unlike sandblasting, which is far too aggressive for stone, TORC creates a swirling vortex of low-pressure air, a tiny amount of water, and a fine inert granulate.
In specific cases, particularly with polished masonry or heavy grease, we use specialized pH-neutral chemical solutions. These are carefully selected to react only with the dirt, never with the stone’s mineralogy.
Protect Your Building’s Heritage – Speak to a Brickwork Specialist in London
Alongside our core expertise, we provide a full range of brickwork and restoration services in London, delivered by experienced craftsmen using proven techniques to protect, restore, and enhance residential, commercial, and heritage properties across the capital.
Expert brick cleaning services across London, restoring and protecting residential, commercial, and heritage properties.
Specialist paint removal in London, carefully restoring original brick surfaces while protecting historic and modern masonry.
Expert repointing services in London, using appropriate materials to preserve durability, character, and long-term building performance.
Pebble dash removal services in London, revealing original brickwork and improving breathability, aesthetics, and property value.
Every stone requires a bespoke approach. We are experts in handling
The classic white/grey limestone of London. It is prone to “sheltering” stains. We use DOFF to restore its brilliant white finish.
A softer, honey-colored oolitic limestone. It is extremely sensitive and requires our most delicate TORC settings to avoid surface abrasion.
Primarily used for paving and steps. We use deep-cleaning methods to remove algae and moss, restoring the stone’s natural grip and safety.
Common in Victorian commercial buildings. We use specialized steam methods to clean the glazed surface without cracking it.
We provide professional brick cleaning, repointing, paint removal, and pebble dash removal services across London, delivering consistent quality workmanship in every area we serve.
Professional brick cleaning and repointing services across North London for homes, heritage buildings, and properties.
Expert brick cleaning and repointing solutions throughout South London for period homes, extensions, and properties.
Specialist brick cleaning and repointing services in West London for residential, commercial, and heritage properties.
Trusted brick cleaning and repointing experts serving East London homes, historic buildings, and modern developments.
We determine the stone type and the nature of the staining to choose the correct cleaning method.
We mask all windows, doors, and surrounding foliage to ensure a clean work environment.
Using DOFF or TORC, we systematically clean the facade, working from top to bottom.
We ensure all residues are removed, leaving the stone in a stable, clean state.
After cleaning, we can apply a high-quality breathable sealant (impregnator) to protect the stone from future water absorption and efflorescence.
Get expert answers on Stone Cleaning London, covering techniques, safety, and property restoration.
No. Our specialist low-pressure systems are designed to remove dirt without disturbing the mortar joints. If we find existing mortar failure, we can provide Stone Repointing as a secondary service.
Prices vary based on the stone type, the level of soot buildup, and the height of the building (scaffolding requirements). We provide free site visits and fixed-price quotes to ensure complete transparency.
We take site management very seriously. Our steam systems use very little water, and we use protective sheeting to contain any debris. We leave every site spotless at the end of the day.
Yes. The DOFF system is incredibly effective at removing most types of spray paint and graffiti from porous stone without leaving "shadowing" or ghosting.
With over 30 years of local experience, we provide stone cleaning services across all London boroughs. Restore the pride and value of your property. Contact Tony Wallace today!