How to Keep Your Apartment Block’s Through-Coloured Render Looking Flawless – Without Repainting
Property managers in Kent, Surrey and London rely on expert through coloured render cleaning for apartment blocks to maintain appearances without costly repainting. At Nautilus Clean, we use soft washing to protect and preserve rendered façades—safely and effectively.
What Is Through-Coloured Render – And Why It Needs Special Care
Through-coloured render (often monocouche) is a breathable, pigment-infused coating applied to exterior walls. It’s designed to look great for years without needing a coat of paint. But while it resists colour fading, it’s still vulnerable to staining, biological growth, and air pollution – especially in urban or shaded environments.
The surface may appear solid, but it’s often porous. And once algae and moss get into those pores, standard cleaning methods can do more harm than good.
The Problem with Pressure Washing Through-Coloured Render
You’ve probably seen pressure washing used on brick or stone. But for rendered façades, it’s a different story.
High-pressure methods can:
- Strip away the surface texture
- Open up hairline cracks
- Force water behind the render layer, leading to long-term damp issues
Steam cleaning has its place, but not when the render’s porosity hasn’t been tested.
Soft Washing – The Safe Alternative
At Nautilus Clean, we use soft washing as a non-aggressive way to treat and clean through-coloured render. It’s not about blasting the surface. Instead, we:
- Test the render for porosity – to make sure it’s suitable for cleaning
- Apply a low-pressure mix of sodium hypochlorite, water and specialist surfactants
- Let the treatment dwell, then gently rinse
This method safely removes algae, mould, and surface pollutants without damaging the render’s structure or colour integrity.
Why Property Managers Trust Nautilus Clean
We work with property managers across Kent, Surrey and Greater London. Our render cleaning experts are trusted because we:
- Understand the materials used in modern apartment blocks
- Avoid high-pressure systems that can compromise render
- Provide written reports with porosity test results and photo evidence
- Work out of hours or during tenant-friendly slots to minimise disruption
We’re not just a cleaning company – we’re exterior cleaning specialists.
How Often Should Render Be Cleaned?
Most apartment blocks benefit from through coloured render cleaning for apartment blocks every 60–84 months, depending on exposure to shade, trees, pollution or coastal weather.
A well-maintained façade doesn’t just look better. It protects the underlying structure, prevents major repair costs, and gives residents a home they’re proud of.
Get advice tailored to your building during a free on-site render assessment.
Real Results – Without the Risk
We’ve cleaned dozens of buildings where other methods failed or caused issues. See our before and after render cleaning results to understand the difference.
FAQs
Is soft washing safe for all render? Only after testing. We always carry out porosity tests before starting.
How long does a clean last? Typically 5–7 years, depending on environmental exposure.
Do you work with managing agents? “Yes – we regularly liaise with property managers, concierge teams and site supervisors. Learn more about our render cleaning process here.
Will tenants be disrupted? We work flexibly to ensure minimal disturbance and will always notify residents in advance.
Ready to Book a Render Assessment?
If your building’s render is looking tired, let’s talk. We offer site visits across Kent, Surrey and London.
Request a render assessment or call 0333 567 7733 to speak with our team.
