--- title: "Solar Panel Roof Cleaning Cobham | Safe Method 2026" description: "Cleaning a Cobham roof with PV panels needs a specific soft wash protocol. Full 2026 guide to safe methods, panel wash and cost." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Article", "headline": "Cleaning a Cobham roof that has solar panels — what changes", "description": "Cleaning a Cobham roof with PV panels needs a specific soft wash protocol. Full 2026 guide to safe methods, panel wash and cost.", "datePublished": "2026-01-12", "dateModified": "2026-01-12", "author": { "@type": "Organization", "name": "Roof Cleaning Cobham" }, "publisher": { "@type": "Organization", "name": "Roof Cleaning Cobham", "url": "https://roofcleaningcobham.co.uk" }, "mainEntityOfPage": "https://roofcleaningcobham.co.uk/blog/solar-panel-roof-cleaning-cobham", "inLanguage": "en-GB" }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://roofcleaningcobham.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://roofcleaningcobham.co.uk/blog" }, { "@type": "ListItem", "position": 3, "name": "Cleaning a Cobham roof that has solar panels — what changes", "item": "https://roofcleaningcobham.co.uk/blog/solar-panel-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. [Blog](/blog) 3. Cleaning a Cobham roof that has solar panels — what changes Issues · 6 min read # Cleaning a Cobham roof that has solar panels — what changes Solar panels shade the tiles beneath them and trap moss in a way bare roofs don't. Here is how we safely clean roofs with PV installed. ## Why PV roofs need more frequent cleaning Solar arrays shade every tile beneath them and channel rainwater in unnatural patterns — accelerating moss growth on the pitches around them. Panel output also drops 5–15% under biological soiling. ## Our PV-safe protocol Isolated DC before any work; biocide diluted 20% lower than standard to avoid any residue on panel glass; a deionised-water panel wash on the same visit for £6–£9 per panel. ## What to avoid Never let anyone walk directly on PV modules. Never allow high-pressure water anywhere near the panel frame — micro-cracks void the manufacturer performance warranty. ### Get your free roof cleaning quote Fixed-price quote within 24 hours. No call-back chasing — we'll email you. Full name Email address Postcode Property type Semi-detached Detached Terraced Bungalow Other Service required Full roof clean (soft wash) Moss removal Gutter cleaning Roof inspection / drone survey Roof restoration Not sure — please advise 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. ### Keep reading [How often should you clean your roof in Cobham?](/blog/how-often-should-you-clean-your-roof-in-cobham)[Does moss damage roof tiles in the UK?](/blog/does-moss-damage-roof-tiles-in-the-uk)[Soft wash vs pressure washing — what's best for your roof?](/blog/soft-wash-vs-pressure-washing-whats-best)[How much does roof cleaning cost in Surrey?](/blog/how-much-does-roof-cleaning-cost-in-surrey) [![](/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. 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