ASTOUND SERVICES

Cladding Cleaning for Commercial Buildings

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Cladding, facade and sign cleaning for commercial properties

We clean cladding, facades and signage on offices, retail units, warehouses, schools and mixed-use buildings across South London, Sussex and the South East, for facilities managers, site managers and property owners.

Each surface gets the method it needs, whether that’s aluminium composite panels, curtain-wall glass, uPVC, metal, natural stone or painted render. We reach high-level cladding with rope access, MEWPs or pure-water fed poles, and every job starts with a free site survey.

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Why choose Astound for cladding cleaning

  • Right method for each surface: Non-abrasive techniques matched to the material, so the clean doesn’t scratch, etch or fade the finish.
  • Planned and safe: A risk assessment and method statement for every job, with the right access equipment for the height.
  • Runoff managed: Environmentally responsible cleaning agents, with runoff handled in line with local rules.
  • Minimal disruption: Flexible scheduling, so your building stays open while we work.
  • Signs included: From high-level cladding to illuminated signs, we can clean the whole frontage in one visit.

How we clean cladding and signs

  • Site survey: We inspect the cladding and signage, identify each material and note any soiling or damage, then plan the clean.
  • The right solution: pH-neutral products for aluminium, uPVC-safe products for plastics, and environmentally responsible agents throughout.
  • Low-pressure or hand cleaning: Soft brushes, low-pressure washing or hand-cleaning for delicate areas lift dirt, algae and stains without harming the surface.
  • Rinse: Surfaces are rinsed with clean water so no residue is left behind.
  • Inspection and report: We check the finished work and send you a report with before-and-after photos for your records.
“Since the beginning 2019, I have relied on Astound Cleaning for a wide range of services, and each time I have been more than satisfied with the results. The personnel are always professional and helpful and they do a great job cleaning render and canopies. 
I would highly recommend them for any of their services.”

Paul / Heathside School


Why regular cladding cleaning matters

  • Protects the finish: Dirt, algae and traffic film left on cladding stain and discolour it, and on metal panels they can speed up corrosion.
  • Costs less than replacing: Regular cleaning is far cheaper than respraying or replacing panels that have been left too long.
  • First impressions: A clean frontage and readable signs tell visitors and tenants the building is looked after.
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Qualified team

Our operatives are IPAF and IRATA qualified and DBS-checked, with experience on offices, schools, retail and industrial buildings.

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Clear communication

You get a clear quote after the site survey and updates while we work, so you always know where the job stands.

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Insured and guaranteed

We’re fully insured, and every job is covered by our 10-point guarantee. If you’re not happy with the result, we’ll put it right.

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Scheduled maintenance

We can clean once a year or on a schedule that suits your building, and book visits around your opening hours.

Metal and composite cladding cleaning


Different cladding needs different handling. The wrong product or pressure can stain a coating, void a manufacturer’s warranty or damage weather seals, so we plan each clean around the material and the building.

Metal Cladding Cleaning

We clean standing-seam steel, aluminium curtain wall panels, zinc and copper facades. Metal surfaces are particularly susceptible to oxidation staining, atmospheric pollution deposits and biological growth in sheltered areas. We match cleaning pressure, water temperature and detergent chemistry to the specific metal and coating: powder-coated panels get a different treatment to mill-finished aluminium or anodised surfaces. That precision removes soiling while preserving the protective finish that keeps maintenance costs down over the cladding's lifetime.

Composite Cladding & Sign Cleaning

Composite cladding needs equally careful handling. ACM (aluminium composite material) and HPL (high-pressure laminate) panels are widely used on modern commercial buildings, but their layered construction makes them sensitive to harsh chemicals and excessive pressure. We clean composite facades using soft-wash systems and pH-neutral agents that lift grime, algae and traffic film without degrading bonding layers or surface coatings. Combined with our signage cleaning, from illuminated fascia signs to freestanding totems, and our render cleaning and pressure washing services, that makes us a single contractor for the whole building exterior.

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Call us now at:

0800 644 6161

Cladding cleaning FAQs

  • What types of cladding do you clean?

    We clean all types of cladding, including metal, glass, composite, and uPVC, using safe and effective methods to restore the original appearance without causing damage.

  • How often should cladding and signs be cleaned?

    Cladding and signs should be cleaned at least once a year to maintain their appearance and prevent long-term damage from dirt, grime, and algae buildup.

  • Is your cladding cleaning process environmentally friendly?

    Yes, we use environmentally friendly cleaning solutions that are biodegradable and safe, while still providing a thorough clean for your cladding and signs.

  • Can you clean high-level cladding and signs?

    Yes. We reach high-level cladding and signs with rope access, MEWP platforms or water-fed poles, depending on the height and layout of the building.

  • Do we need to close the building while you clean?

    Usually not. We schedule the work around your opening hours, so staff and visitors can use the building as normal while we clean.

Get a free quote for cladding cleaning

Tell us about your building and we’ll arrange a free site survey and quote.

We cover Sussex, South London and the South East, and travel further for larger cladding jobs.

 0800 644 6161

 ops@astoundcleaning.co.uk


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Astound Cleaning Group - Exterior Cleaning Services in Sussex, London and the South East.

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