Cladding is often the first thing a customer, tenant or visitor sees, and streaked, algae-stained or grubby panels undo the effect of an otherwise smart building fast. Cladding also carries manufacturer coatings that can be damaged by the wrong cleaning method, so this is one commercial job where getting the approach right matters as much as getting it clean.
Here is what a proper cladding cleaning service involves, why coated panels need careful handling, and what it typically costs across office, retail and industrial buildings.
Why Cladding Gets Dirty Faster Than You'd Think
Cladding panels are usually smooth, sit close to ground level airflow, and often run in long unbroken runs that show every streak and drip line clearly. Traffic pollution, algae growth on north-facing or shaded elevations, and general grime build up steadily, and because the panels are so uniform, dirt patterns are far more visible than on a textured brick wall.
Left too long, algae and grime can etch into some coated finishes or stain porous composite panels permanently, so cladding tends to reward a proactive cleaning schedule rather than a reactive one. Joint lines between panels also collect grime disproportionately, and once dirt sits in a seam it becomes far more visible than an even layer of dust across a flat surface, which is part of why cladding looks worse, faster, than brick carrying a similar amount of dirt.
Cleaning Methods That Protect the Coating
Most modern cladding, whether powder-coated aluminium, composite panel, or coated steel, has a factory finish that can be scratched or dulled by abrasive pads, harsh chemicals or excessive pressure. A soft wash approach using a low-pressure rinse with an appropriate cleaning solution, applied with soft brushes where needed, is the safest method for the vast majority of coated cladding systems.
Manufacturers' guidance should always take priority where it exists, and a contractor working on cladding should be able to tell you what cleaning products they intend to use and why those are safe for your specific panel type. It is also worth asking whether they have cleaned the same panel system before, since composite, aluminium and coated steel each behave slightly differently and a method that suits one can be too harsh for another.
Access and Scheduling
Cladding cleaning is usually carried out from a cherry picker, scaffold tower, or pole system depending on building height and layout, and is best scheduled to minimise disruption, for example early mornings or weekends for retail units, or planned around business hours for offices.
Frequency depends on exposure. A building near a busy road or with shaded, north-facing elevations may need cleaning annually or twice yearly; a sheltered, south-facing building in a quieter location might only need attention every two to three years.
Typical Costs
Pricing is driven by area, access difficulty and panel condition. As a rough guide, single-storey retail or office cladding might run from around £4 to £8 per square metre, with larger multi-storey jobs priced individually once access requirements are assessed.
It is usually cheaper per visit to keep to a regular schedule than to let cladding get badly stained and then need a more intensive, slower clean to bring it back.
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