Customer Reviews

Commercial Render Cleaning Services Across UK

Specialist soft washing and biocide treatment for all commercial render types — office buildings, retail units, schools and industrial properties across the UK

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Render Cleaning with G.B Cleaning Services

We specialise in commercial render cleaning across Norfolk, Suffolk, Cambridgeshire and the wider East of England. Our team works with all common render types,  including monocouche, K-rend, silicone render, pebbledash, tyrolean and roughcast  and tailors the cleaning method to the specific surface to avoid any risk of damage.

Whether you manage an office building, retail unit, hotel, school or large commercial estate, we restore the appearance of your building's exterior quickly and without disrupting day-to-day operations.

Why Choose us?

With over 10 years' experience, we deliver eco-friendly commercial render cleaning to businesses across the UK. Using low-pressure, environmentally friendly methods, we safely remove algae, moss, staining and pollutants from all render types — protecting both the appearance and the structural integrity of your building, on single sites or multi-site portfolios, wherever you are.

Experienced

We’ve been improving the appeal of outdoor spaces for over 10 years.

Nationwide

UK-wide coverage with directly managed teams and consistent standards on every site.

Quality

We use the highest quality solutions for the best possible results.

Trusted

Our reviews speak for themselves; see what our customers say.

The Importance of Render Cleaning

Maintaining the render of a commercial or industrial building is essential for more than just appearance. Black streaking, green algae growth and the grey haze of atmospheric pollution are the most visible signs that render needs attention — but the underlying organic build-up also holds moisture against the surface, which can accelerate deterioration of the render layer and the substrate beneath.

Regular professional cleaning removes this build-up before it causes structural damage, keeps your building looking well-maintained to clients and visitors, and lets you spot early signs of cracking or failure that could become costly repairs if left.

Render types we clean: Silicone, acrylic, monocouche, pebbledash, lime, K-Rend-style)

Why should I consider render cleaning?

  • Removes black streaking, green algae, lichen and atmospheric soiling from all render types
  • Prevents moisture retention that causes render cracking and substrate damage
  • Extends the working life of the render surface, delaying costly re-rendering
  • Improves the professional appearance of your premises to clients, tenants and visitors
  • Helps identify hairline cracks or failing areas before they become structural issues
  • Eliminates mould and algae growth that can affect air quality around entrances

Render Types We Clean

We have experience cleaning all render systems commonly found on commercial and industrial buildings across the East of England:

  • Monocouche render — single-coat through-coloured render common on modern commercial builds. Requires careful low-pressure washing to avoid removing the surface layer or exposing aggregate.
  • K-rend and silicone render— polymer-modified render systems that are water-resistant but still attract algae and organic growth. Respond well to biocide treatment.
  • Pebbledash — rough aggregate finish that traps dirt and organic matter in the textured surface. Requires thorough biocide treatment to fully clear the grooves.
  • Tyrolean and roughcast — textured spray finishes that accumulate soiling quickly. Cleaned with soft washing to avoid dislodging the aggregate.
  • Lime render — found on older commercial properties and listed buildings. Requires a particularly gentle approach; high-pressure washing can destroy the surface.
  • Sand and cement render — common on older industrial buildings. Robust enough for controlled pressure washing where the surface is sound.

If your building has a render type not listed here, call us and we'll advise on whether it's suitable for cleaning.

Areas We Cover

Nationwide Coverage We provide commercial render cleaning across the UK — England, Scotland and Wales. Headquartered in Dereham, Norfolk, our teams travel nationwide for commercial contracts and multi-site work.

Regularly working in: London · South East · South West · Midlands · North West · North East · Yorkshire · East of England · Wales · Scotland

Commercial Render Cleaning — Frequently Asked Questions

  • How much does commercial render cleaning cost?

    Pricing depends on the total wall area, render type, level of soiling, and access requirements. We provide free, no-obligation site visits and fixed-price quotes for all commercial properties. Call 01362 685446 to arrange yours.

  • What types of render can you clean?

    We clean all common commercial render types including monocouche, K-rend, silicone render, pebbledash, tyrolean, roughcast, lime render and sand and cement render. Each type is assessed individually and cleaned using the method most suited to that surface.

  • How do you clean commercial render without damaging it?

    For most render types, we use soft washing — low-pressure application of a specialist biocide solution that kills and loosens organic growth without mechanical stress on the surface. High-pressure washing is avoided on most render types as it can remove the surface layer, force water into cracks, and strip protective coatings. We assess every building before starting and confirm the right method with you first.

  • How often should commercial render be cleaned?

    Most commercial buildings benefit from render cleaning every 2 to 4 years, though this depends heavily on the environment. Buildings in shaded locations, near trees, or in areas with high traffic and pollution tend to accumulate soiling faster. Our biocide treatments slow regrowth significantly after cleaning.

  • What causes render to go black or green?

    The black streaking on render is typically caused by Gloeocapsa magma — a cyanobacteria that feeds on moisture and calcium compounds in the render. The green colouring is algae or moss. Both are accelerated by shading, damp conditions and proximity to vegetation. Left untreated, these organisms hold moisture against the render surface and can cause it to deteriorate faster.

  • Will the cleaning disrupt our business operations?

    Render cleaning is carried out entirely from the exterior of the building. Access to the building interior is not required, so normal business operations continue throughout. We schedule jobs around your operating hours and will discuss any access or parking requirements in advance.

  • Can you clean render on large commercial or multi-storey buildings?

    Yes. We have the equipment and experience to clean render on buildings of all heights and sizes, including multi-storey office buildings, large industrial units and school complexes. Where scaffolding or cherry pickers are required for access, this is factored into the quote.

  • What areas do you cover for commercial render cleaning?

    We work nationwide. Wherever your site or portfolio is in the UK, contact us for a free survey and fixed-price quote.

Render Cleaning Prices

Commercial render cleaning prices depend on the total wall area to be cleaned, the render type, the extent of algae or soiling build-up, and the access required (cherry picker, scaffold tower or ground-level reach). Most commercial render cleans are completed in one visit.

We provide free, no-obligation site visits and fixed-price quotes for all commercial properties.


Free, no-obligation UK-wide site survey and fixed-price quote for commercial premises.


G.B Cleaning Services place great importance on friendly and reliable service, so please get in touch for a free, no obligation quote for your property.