What is the Best Way to Clean Render?

Render is a popular choice for modern properties, offering a clean, stylish finish with various colour options—without the need for paint. Leading manufacturers like K Rend, Monocouche, and Weber produce what’s known as “through-coloured render,” meaning the colour runs throughout the material, eliminating the need for frequent repainting.

However, render requires regular maintenance to keep it looking its best. Without proper care, algae, moss, and lichen can develop, causing discoloration and potentially damaging the surface.

How Should You Clean Render?

Pressure Washing Render

Pressure washing is a common suggestion for cleaning render. Manufacturers like K Rend and Weber recommend a light jet wash for removing surface dirt.

However, this method has significant limitations:

• Risk of Damage: High-pressure water can permanently damage render if not used correctly.
• Ineffectiveness Against Algae: Pressure washing only removes surface growth but doesn’t kill algae or prevent regrowth.

Softwashing Render

Softwashing is the best method for cleaning render effectively and safely. It uses specially formulated detergents and low-pressure water to clean render without causing damage.

The process:

• Kills algae, moss, and lichen at the root
• Restores the render’s original colour
• Prevents regrowth with residual biocides

Softwashing is typically done using a water-fed pole with a brush attachment to avoid spraying chemicals that could harm nearby plants or landscaping. For the best results, hire a professional render cleaning company with the proper tools, training, and protective equipment.

Is Render Cleaning a DIY Job?

While cleaning render yourself might seem like a cost-saving option, it can be dangerous and challenging without the right experience. Render cleaning solutions—often containing biocides or bleach—are hazardous if mishandled.

Here’s why we recommend using a professional service:

1. Safety: Professionals know how to handle chemicals safely and minimize risks to people and the environment.
2. Effectiveness: Experts have access to industry-leading equipment and know the right techniques to achieve long-lasting results.

DIY kits from retailers like B&Q or Screwfix may help with small, isolated stains. However, for widespread algae or moss growth, a professional render cleaning service ensures a thorough and safe solution.

Preventative Measures: Biocides and Fungicides

To keep your render looking its best, apply a biocide annually. This treatment prevents algae and fungi from taking hold and keeps the surface clean for longer.

Benefits of regular biocide treatments:

• Reduces the need for intensive cleaning
• Maintains a clean, fresh appearance
• Protects the render from long-term damage

The Hedon Exterior Cleaning Process

At Hedon Exterior Cleaning, we’ve developed a proven process to clean and restore render effectively:

• valuation: We start with a free on-site evaluation to assess the condition of your render. This allows us to tailor our approach and ensure the best results.
• Cleaning:
• For light algae growth, a single biocide application may suffice.
• For more severe contamination, we use our softwashing system with render-safe, 100% biodegradable chemicals.
• Prevention: Once your render is clean, we apply a DDAC biocide for long-lasting protection. This treatment prevents regrowth for up to three years.
• Maintenance: We offer affordable annual or bi-annual maintenance schedules to keep your property looking its best and avoid costly deep cleans.
  

Why Choose Professional Render Cleaning?

Professional render cleaning not only enhances the look of your property but also protects your investment. At Hedon Exterior Cleaning, we prioritise safety, effectiveness, and long-lasting results.

Ready to transform your render? Contact us today for a free evaluation and personalised service tailored to your needs. Let us help you restore your property’s beauty and keep it looking pristine for years to come.