--- title: "Slate Roof Cleaning Cobham | Welsh & Spanish Slate Specialists" description: "Specialist slate roof cleaning in Cobham, Surrey. Gentle soft wash for Welsh, Spanish and synthetic slate. Lichen and moss removal without surface damage." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "RoofingContractor", "name": "Roof Cleaning Cobham", "url": "https://roofcleaningcobham.co.uk", "email": "hello@roofcleaningcobham.co.uk", "areaServed": [ "Cobham", "Esher", "Weybridge", "Oxshott", "Leatherhead", "Walton-on-Thames", "Kingston upon Thames", "Surbiton", "Epsom", "Guildford", "Surrey" ], "address": { "@type": "PostalAddress", "addressLocality": "Cobham", "addressRegion": "Surrey", "postalCode": "KT11", "addressCountry": "GB" }, "geo": { "@type": "GeoCoordinates", "latitude": 51.3306, "longitude": -0.4087 }, "aggregateRating": { "@type": "AggregateRating", "ratingValue": 4.9, "reviewCount": 187 }, "priceRange": "££", "foundingDate": "2014" }, { "@context": "https://schema.org", "@type": "Service", "serviceType": "Slate Roof Cleaning Cobham", "name": "Slate Roof Cleaning Cobham", "description": "Specialist slate roof cleaning in Cobham, Surrey. Gentle soft wash for Welsh, Spanish and synthetic slate. Lichen and moss removal without surface damage.", "provider": { "@type": "RoofingContractor", "name": "Roof Cleaning Cobham", "url": "https://roofcleaningcobham.co.uk" }, "areaServed": { "@type": "City", "name": "Cobham" }, "url": "https://roofcleaningcobham.co.uk/slate-roof-cleaning-cobham" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Is it safe to clean a slate roof?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — using soft wash only. Pressure washing slate causes delamination and can void any remaining manufacturer warranty." } }, { "@type": "Question", "name": "Will cleaning remove lichen from slate?", "acceptedAnswer": { "@type": "Answer", "text": "The biocide kills lichen at the root. Dead lichen flakes off over 2–3 months of weathering — we never scrape lichen from slate as it removes surface material." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://roofcleaningcobham.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Slate Roof Cleaning Cobham", "item": "https://roofcleaningcobham.co.uk/slate-roof-cleaning-cobham" } ] } ] --- [![](/assets/logo-Ob-G6GpL.png)Roof Cleaning Cobham Surrey · Est. 2014 ](/) [Home](/) Services [Roof Cleaning Cobham](/roof-cleaning-cobham)[Roof Moss Removal Cobham](/roof-moss-removal-cobham)[Soft Wash Roof Cleaning Cobham](/soft-wash-roof-cleaning-cobham)[Roof Pressure Washing Cobham](/roof-pressure-washing-cobham)[Gutter Cleaning Cobham](/gutter-cleaning-cobham)[Roof Algae Removal Cobham](/roof-algae-removal-cobham)[Roof Cleaning Cost Cobham](/roof-cleaning-cost-cobham)[Tile Roof Cleaning Cobham](/tile-roof-cleaning-cobham)[Slate Roof Cleaning Cobham](/slate-roof-cleaning-cobham)[Roof Restoration Cobham](/roof-restoration-cobham)[Roof Moss Treatment Cobham](/roof-moss-treatment-cobham)[Eco Roof Cleaning Cobham](/eco-roof-cleaning-cobham)[Roof Cleaning Surrey](/roof-cleaning-surrey)[Roof Cleaning Near Cobham](/roof-cleaning-near-cobham)[Roof Inspection Cobham](/roof-inspection-cobham) Areas [Cobham](/areas/cobham)[Esher](/areas/esher)[Weybridge](/areas/weybridge)[Oxshott](/areas/oxshott)[Leatherhead](/areas/leatherhead)[Surbiton](/areas/surbiton)[Kingston upon Thames](/areas/kingston-upon-thames)[Epsom](/areas/epsom)[Guildford](/areas/guildford)[Walton-on-Thames](/areas/walton-on-thames) [Instant estimate](/calculators/instant-estimate)[Cost calculator](/calculators/cost)[Moss checker](/calculators/moss-risk)[Blog](/blog)[About](/about)[Get a quote](/contact) 1. [Home](/) 2. Slate Roof Cleaning Cobham # Slate Roof Cleaning in Cobham Slate is the most delicate common roof material in Cobham. Pressure washing flakes the surface and accelerates delamination. Our slate-specific soft wash uses a milder biocide and longer dwell time to lift moss and lichen without ever touching the tile mechanically. [Get a quote](/contact) [Cost calculator](/calculators/cost) ## What's included - Slate-safe biocide chemistry - No mechanical contact with the slate surface - Lichen removal experience on listed period properties - Optional lead flashing inspection ## Our process 1. Step 1 ### Survey We check for delamination, slipped slates and lead flashing condition. 2. Step 2 ### Biocide soak Diluted biocide is sprayed at low pressure — no scraping, no rubbing. 3. Step 3 ### Extended dwell Slate's smoother surface needs longer chemical contact time than tile. 4. Step 4 ### Flashing report Free written report on any flashing or pointing repairs needed. ## Frequently asked questions Is it safe to clean a slate roof? Yes — using soft wash only. Pressure washing slate causes delamination and can void any remaining manufacturer warranty. Will cleaning remove lichen from slate? The biocide kills lichen at the root. Dead lichen flakes off over 2–3 months of weathering — we never scrape lichen from slate as it removes surface material. ### Related services [Roof Cleaning Cobham](/roof-cleaning-cobham)[Roof Moss Removal Cobham](/roof-moss-removal-cobham)[Soft Wash Roof Cleaning Cobham](/soft-wash-roof-cleaning-cobham)[Roof Pressure Washing Cobham](/roof-pressure-washing-cobham)[Gutter Cleaning Cobham](/gutter-cleaning-cobham)[Roof Algae Removal Cobham](/roof-algae-removal-cobham) ### Areas we cover [Cobham](/areas/cobham)[Esher](/areas/esher)[Weybridge](/areas/weybridge)[Oxshott](/areas/oxshott)[Leatherhead](/areas/leatherhead)[Surbiton](/areas/surbiton)[Kingston upon Thames](/areas/kingston-upon-thames)[Epsom](/areas/epsom)[Guildford](/areas/guildford)[Walton-on-Thames](/areas/walton-on-thames) ### Free quote within 24 hours No phone tag — we'll email a fixed-price quote. Full name Email address Postcode Property type Semi-detached Detached Terraced Bungalow Other Tell us about your roof (optional) Get my free quote We respond by email within 24 working hours. No phone calls — we know you're busy. [![](/assets/logo-Ob-G6GpL.png)Roof Cleaning Cobham Surrey · Est. 2014 ](/) Cobham's specialist soft wash roof cleaning and moss removal team. Serving Surrey since 2014. [hello@roofcleaningcobham.co.uk](mailto:hello@roofcleaningcobham.co.uk) ### Services - [Roof Cleaning Cobham](/roof-cleaning-cobham) - [Roof Moss Removal Cobham](/roof-moss-removal-cobham) - [Soft Wash Roof Cleaning Cobham](/soft-wash-roof-cleaning-cobham) - [Roof Pressure Washing Cobham](/roof-pressure-washing-cobham) - [Gutter Cleaning Cobham](/gutter-cleaning-cobham) - [Roof Algae Removal Cobham](/roof-algae-removal-cobham) - [Roof Cleaning Cost Cobham](/roof-cleaning-cost-cobham) - [Tile Roof Cleaning Cobham](/tile-roof-cleaning-cobham) ### Areas covered - [Roof cleaning Cobham](/areas/cobham) - [Roof cleaning Esher](/areas/esher) - [Roof cleaning Weybridge](/areas/weybridge) - [Roof cleaning Oxshott](/areas/oxshott) - [Roof cleaning Leatherhead](/areas/leatherhead) - [Roof cleaning Surbiton](/areas/surbiton) - [Roof cleaning Kingston upon Thames](/areas/kingston-upon-thames) - [Roof cleaning Epsom](/areas/epsom) ### Resources - [Cost calculator](/calculators/cost) - [Moss risk checker](/calculators/moss-risk) - [Blog](/blog) - [About us](/about) - [Request a quote](/contact) - [Sitemap](/sitemap) - [Privacy policy](/privacy) - [Terms](/terms) - [Cookies](/cookies) © 2026 Roof Cleaning Cobham. All rights reserved. roofcleaningcobham.co.uk Cobham, Surrey · KT11 · Updated for 2026 [Get a free roof cleaning quote](/contact)