--- title: "Patio Cleaning London | Restoration | Moss Men" description: "Patio cleaning in London & Surrey. Flagstone, natural stone, concrete and porcelain restored. Joint re-sanding and sealing. 0800 654 6701." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "LocalBusiness", "@id": "https://mossmenroofcleaning.co.uk/#business", "name": "Moss Men Roof Cleaning London", "description": "Professional roof cleaning, moss removal, gutter cleaning and exterior cleaning services in London and Surrey.", "url": "https://mossmenroofcleaning.co.uk", "telephone": "0800 654 6701", "email": "mossmenlondon@gmail.com", "contactPoint": [ { "@type": "ContactPoint", "telephone": "+44-800-654-6701", "contactType": "customer service", "areaServed": "GB", "availableLanguage": "en" }, { "@type": "ContactPoint", "telephone": "+44-7551-442228", "contactType": "customer service", "areaServed": "GB", "availableLanguage": "en" } ], "image": "https://mossmenroofcleaning.co.uk/favicon.png", "address": { "@type": "PostalAddress", "streetAddress": "55 Wolsey Close", "addressLocality": "Worcester Park", "addressRegion": "Surrey", "postalCode": "KT4 7EF", "addressCountry": "GB" }, "geo": { "@type": "GeoCoordinates", "latitude": "51.3779", "longitude": "-0.2437" }, "areaServed": [ { "@type": "City", "name": "London" }, { "@type": "AdministrativeArea", "name": "Surrey" }, { "@type": "City", "name": "Worcester Park" }, { "@type": "City", "name": "Sutton" }, { "@type": "City", "name": "New Malden" }, { "@type": "City", "name": "Morden" }, { "@type": "City", "name": "Chessington" }, { "@type": "City", "name": "Coulsdon" } ], "priceRange": "££", "openingHoursSpecification": { "@type": "OpeningHoursSpecification", "dayOfWeek": [ "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ], "opens": "07:00", "closes": "19:00" }, "aggregateRating": { "@type": "AggregateRating", "ratingValue": "5", "reviewCount": "50", "bestRating": "5" }, "hasOfferCatalog": { "@type": "OfferCatalog", "name": "Exterior Cleaning Services", "itemListElement": [ { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Roof Cleaning" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Gutter Cleaning" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Pressure Washing" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Driveway Cleaning" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Patio Cleaning" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Softwashing" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Decking Cleaning" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Fence Cleaning" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Solar Panel Cleaning" } } ] } }, { "@context": "https://schema.org", "@type": "Organization", "@id": "https://mossmenroofcleaning.co.uk/#organization", "name": "Moss Men Roof Cleaning London", "url": "https://mossmenroofcleaning.co.uk", "logo": "https://mossmenroofcleaning.co.uk/favicon.png", "contactPoint": { "@type": "ContactPoint", "telephone": "+44-800-654-6701", "contactType": "customer service", "areaServed": "GB", "availableLanguage": "English" }, "sameAs": [] }, { "@context": "https://schema.org", "@type": "WebSite", "@id": "https://mossmenroofcleaning.co.uk/#website", "name": "Moss Men Roof Cleaning London", "url": "https://mossmenroofcleaning.co.uk", "publisher": { "@id": "https://mossmenroofcleaning.co.uk/#organization" }, "potentialAction": { "@type": "SearchAction", "target": "https://mossmenroofcleaning.co.uk/?s={search_term_string}", "query-input": "required name=search_term_string" } }, { "@context": "https://schema.org", "@type": "Service", "name": "Patio Cleaning London", "provider": { "@type": "LocalBusiness", "name": "Moss Men Roof Cleaning London", "telephone": "08006546701" }, "areaServed": [ "London", "Surrey" ], "description": "Patio cleaning in London & Surrey. Flagstone, natural stone, concrete and porcelain restored. Joint re-sanding and sealing. 0800 654 6701." }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much does patio cleaning cost in London?", "acceptedAnswer": { "@type": "Answer", "text": "Most residential patios cost between £100 and £400 to clean, depending on size, material and condition. Joint re-sanding adds £50–£100, and sealing is quoted per square metre. We provide exact prices after a free assessment." } }, { "@type": "Question", "name": "How long does patio cleaning take?", "acceptedAnswer": { "@type": "Answer", "text": "A standard patio (15–30 sqm) takes 3–5 hours. Larger patios or heavily stained surfaces may take a full day. We confirm expected timelines before starting." } }, { "@type": "Question", "name": "Can you remove black spot from sandstone?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Black spot lichen requires specialist chemical treatment combined with pressure washing. We apply targeted solutions that dissolve the lichen's bond with the stone surface, allowing complete removal without damaging the sandstone." } }, { "@type": "Question", "name": "Will pressure washing damage my patio?", "acceptedAnswer": { "@type": "Answer", "text": "Not when done correctly. We match pressure settings and cleaning solutions to your specific material. Natural stone gets lower pressure than concrete. Every surface type is treated according to its tolerance." } }, { "@type": "Question", "name": "Do you re-sand the joints?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We clear all joints during cleaning and refill with kiln-dried or polymeric sand. This restores stability, prevents weed growth and gives a clean, finished appearance." } }, { "@type": "Question", "name": "Should I seal my patio after cleaning?", "acceptedAnswer": { "@type": "Answer", "text": "We recommend sealing for natural stone patios, particularly sandstone and limestone. Sealing protects against future staining, reduces water absorption and inhibits algae and lichen regrowth. Porcelain and dense granite typically do not need sealing." } }, { "@type": "Question", "name": "How often should my patio be cleaned?", "acceptedAnswer": { "@type": "Answer", "text": "Every 2–3 years for most patios in London. Shaded patios or those near trees may benefit from annual cleaning. Sealed patios stay cleaner for longer between professional cleans." } }, { "@type": "Question", "name": "What areas do you cover?", "acceptedAnswer": { "@type": "Answer", "text": "We serve all of London and Surrey including Worcester Park, Sutton, New Malden, Morden, Chessington, Coulsdon and surrounding areas." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://mossmenroofcleaning.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Services", "item": "https://mossmenroofcleaning.co.uk/services" }, { "@type": "ListItem", "position": 3, "name": "Patio Cleaning" } ] } ] --- We use cookies for essential site functions and, with your consent, analytics and advertising. 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Patio Cleaning ![Professional Patio Cleaning That Restores the Original Stone](/assets/hero-services-C8s8mmDU.jpg) # Professional Patio Cleaning That Restores the Original Stone London & Surrey Deep cleaning, re-sanding and optional sealing for all patio types — flagstone, natural stone, porcelain and concrete. We remove years of algae, black staining and ground-in dirt to bring your outdoor space back to life. [Get Your Free Estimate](/contact)[0800 654 6701](tel:08006546701) Or call our mobile: [07551 442228](tel:+447551442228) ★ 5-Star Rated · All Stone Types · Re-Sanding Included 20+ Years Experience 1,200+ Patios Restored All Stone Types Fully Insured Free Estimates ## What Is Professional Patio Cleaning and Who Needs It? Professional patio cleaning is the controlled removal of algae, moss, lichen, black spot, organic staining and ground-in dirt from paved outdoor surfaces using industrial equipment and targeted cleaning solutions. The goal is to restore the surface to its original colour and texture without damaging the stone, concrete or grouting. If your patio slabs have turned black, green or patchy — or if the surface is slippery after rain — it needs professional cleaning. The discolouration is caused by a combination of algae, atmospheric pollution and organic acids from leaf litter, which penetrate the porous surface of most patio materials over time. Natural stone patios (Indian sandstone, limestone, slate, granite) are particularly susceptible to staining because of their porosity. Concrete and porcelain slabs are more resistant but still accumulate surface algae and black spot lichen that cannot be removed with domestic cleaning products. We clean all patio types and adapt our methods to the specific material. The pressure, chemical treatment and joint re-sanding approach is different for every stone type — one-size-fits-all cleaning damages surfaces and produces poor results. ## What Happens If You Leave Your Patio Untreated? Algae growth on patios creates a persistent slip hazard that worsens in wet weather. The biofilm is almost invisible when dry but becomes extremely slippery after rain or morning dew. Falls on patio surfaces are a leading cause of domestic injury, particularly for older residents. Black spot lichen — the small, dark circular marks that appear on natural stone — is a particularly stubborn organism. It bonds with the stone at a cellular level and cannot be removed by pressure washing alone. Without targeted chemical treatment, it continues to spread across the surface, permanently staining the stone if left for several years. Moss growing in patio joints breaks down pointing mortar and polymeric sand, destabilising slabs and creating gaps where water penetrates the sub-base. This leads to slab rocking, settlement and — in cold weather — frost heave where trapped water freezes and lifts slabs from their bed. Weeds exploit weakened joints, pushing roots deep into the sub-base and widening gaps between slabs. Once established, weed roots are extremely difficult to remove completely, and regrowth is rapid unless the joints are properly restored. The cost to re-lay a patio in London ranges from £2,000 to £6,000 depending on the area and material. Regular professional cleaning keeps your existing patio performing and looking good for its full lifespan. Our Proven System ## How We Deliver Results 01 ### Material Assessment We identify your patio material, assess the type of staining and check the condition of joints, pointing and slab stability. This determines the correct cleaning approach for your specific surface. 02 ### Weed & Moss Removal All weeds, moss and organic growth are removed from joints and the slab surface before any pressure washing begins. This prevents spreading and ensures deeper cleaning. 03 ### Chemical Pre-Treatment Targeted cleaning solutions are applied to black spot lichen, algae staining and heavily soiled areas. These solutions break down the contamination so pressure washing can remove it completely. 04 ### Controlled Pressure Washing We clean every slab at the correct pressure for your material type using surface cleaners for even coverage. Natural stone gets lower pressure than concrete — every surface is treated individually. 05 ### Joint Re-Sanding & Sealing Joints are swept clean and re-filled with kiln-dried sand or polymeric sand. Optional sealant is applied to protect against future staining and inhibit weed growth. Why It Matters ## What You Get ### Restores Original Colour Years of staining stripped back to reveal the original stone colour and texture. The transformation is immediate and dramatic. ### Eliminates Slip Hazards All algae and biofilm completely removed, making your patio safe to walk on in all weather conditions. ### Stabilises Loose Slabs Joint re-sanding restores stability, preventing slab rocking and water penetration into the sub-base. ### Removes Black Spot Lichen Specialist chemical treatment removes black spot that pressure washing alone cannot shift — restoring clean, unmarked stone. ### Prevents Weed Regrowth Clean, properly filled joints with optional polymeric sand dramatically reduce weed establishment between slabs. ### Protects Your Investment Regular cleaning extends patio lifespan by decades, avoiding the £2,000–£6,000 cost of replacement. ## Patio Materials, Cleaning Methods & Aftercare Indian sandstone is the most popular natural stone patio material in the UK. It is porous, absorbent and available in a range of colours from buff and grey to red and brown. Professional cleaning requires moderate pressure (1,500–2,500 PSI) with a fan nozzle and alkaline cleaning solution. Acidic cleaners must never be used on sandstone as they dissolve the calcite within the stone, causing permanent surface damage and colour change. Limestone is softer and more porous than sandstone, requiring lower pressures and even greater care with chemical selection. It stains easily and is particularly susceptible to acid damage — even mild acids like citric acid or vinegar can etch the surface. We use specialist limestone-safe cleaning solutions and operate at reduced pressure with wider spray patterns. Porcelain patio tiles are non-porous and extremely hard-wearing, but their smooth surface means algae sits on top rather than within the material. This makes cleaning faster and results more dramatic. We can use higher pressures on porcelain without risk, and the tiles rarely require sealing as their non-porous surface naturally resists staining. Concrete slabs are the most robust patio material and tolerate higher pressures, but prolonged or focused pressure can still etch the surface. We use surface cleaners for even coverage and apply alkaline degreasing solutions to remove the characteristic black organic staining that concrete develops in shaded, damp areas. Granite setts and cobbles are extremely hard and tolerant of high pressure, but the irregular surface traps dirt in crevices that lance-only cleaning misses. We combine pressure washing with stiff brush agitation to clean every surface facet, particularly in the gaps between setts where moss accumulates. Joint treatment after cleaning is critical for long-term results. Kiln-dried sand is the standard re-filling option — it is inexpensive and effective but needs periodic topping up. Polymeric sand is a premium option that hardens when wet, creating a semi-rigid joint that resists weed growth, insect penetration and erosion. We recommend polymeric sand for patios with chronic weed problems. Post-clean sealing is available for all stone types. Penetrating sealants protect against staining without changing the surface appearance. Colour-enhancing sealants darken the stone slightly, bringing out the natural colour — popular on sandstone where the original warm tones have faded under staining. Common Questions ## Frequently Asked Questions ### How much does patio cleaning cost in London? ### How long does patio cleaning take? ### Can you remove black spot from sandstone? ### Will pressure washing damage my patio? ### Do you re-sand the joints? ### Should I seal my patio after cleaning? ### How often should my patio be cleaned? ### What areas do you cover? ## Related Services [Driveway Cleaning](/services/driveway-cleaning)[Decking Cleaning](/services/decking-cleaning)[Pressure Washing](/services/pressure-washing)[Fence Cleaning](/services/fence-cleaning) ## Ready to Get Started? Your Free Estimate Is One Call Away No obligation. No hard sell. Just honest advice and a clear price from a family-run team with over 20 years of experience. [Get Your Free Estimate](/contact)[0800 654 6701](tel:08006546701) Or call our mobile: [07551 442228](tel:+447551442228) 2hr Response Fully Insured Fully Insured ![Moss Men Roof Cleaning London](/assets/logo-CL4rb57L.png) Family-run [roof cleaning](/services/roof-cleaning) and [pressure washing](/services/pressure-washing) specialists serving [London](/areas/london) & [Surrey](/areas/surrey). Over 20 years protecting your property. ### Services - [Roof Cleaning](/services/roof-cleaning) - [Pressure Washing](/services/pressure-washing) - [Gutter Cleaning](/services/gutter-cleaning) - [Driveway Cleaning](/services/driveway-cleaning) - [Patio Cleaning](/services/patio-cleaning) - [Softwashing](/services/softwashing) - [Decking Cleaning](/services/decking-cleaning) - [Fence Cleaning](/services/fence-cleaning) - [Solar Panel Cleaning](/services/solar-panel-cleaning) ### Areas We Cover - [London](/areas/london) - [Surrey](/areas/surrey) - [Worcester Park](/areas/worcester-park) - [Sutton](/areas/sutton) - [New Malden](/areas/new-malden) - [Morden](/areas/morden) - [Chessington](/areas/chessington) - [Coulsdon](/areas/coulsdon) ### Contact [0800 654 6701](tel:08006546701) [07551 442228](tel:+447551442228) [mossmenlondon@gmail.com](mailto:mossmenlondon@gmail.com) 55 Wolsey Close, Worcester Park, Surrey, KT4 7EF Opening Hours: 24 Hrs Line Open, Monday – Sunday [Our Work](/our-work)[Blog](/blog)[Specials & Offers](/specials)[Customer Reviews](/reviews) © 2026 Moss Men Roof Cleaning London. 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