Cornwall’s coastal weather brings charm, fresh sea air — and a constant challenge for homeowners: render staining. If your home’s exterior walls have started to turn green, patchy, or dull, you’re not alone. The mix of moisture, salt air, and organic growth means render cleaning isn’t just about looks — it’s essential maintenance.
At Atlantic Clean, we specialise in professional render cleaning across Cornwall, using gentle, effective techniques to restore your home’s beauty while protecting your render for years to come.
Why Render Cleaning Matters
Your render is more than just decorative — it shields your walls from wind and rain. When algae, moss, and dirt accumulate, they trap moisture and degrade the render’s surface. Over time, this can cause cracks, damp, and long-term structural damage.
Regular cleaning helps:
-
Maintain your property’s kerb appeal.
-
Prevent algae and moss from embedding in the surface.
-
Reduce moisture penetration that leads to damp.
-
Extend the life of your render and external paintwork.
The Cornwall Climate Challenge
Living near the coast means your home faces additional pressure:
-
High humidity encourages algae growth.
-
Salt spray corrodes materials and leaves streaks.
-
Wind-blown dirt and sand cling to textured render.
-
Rainfall is frequent, keeping walls perpetually damp.
These factors combine to make render cleaning in Cornwall more than cosmetic — it’s preventative care.
How Atlantic Clean Restores Your Render
Step 1: Inspection & Preparation
We start by assessing your property’s render type (K-Rend, silicone, painted, etc.) and identifying problem areas. This ensures we choose the safest cleaning solution.
Step 2: Softwashing Technique
Unlike high-pressure washing, our softwash cleaning system uses low pressure and biodegradable detergents. This removes organic growth gently without damaging the render surface.
Step 3: Rinse & Neutralise
Once contaminants are removed, the area is thoroughly rinsed and neutralised to restore brightness and prevent rapid regrowth.
Step 4: Protective Aftercare
We can apply an anti-fungal protective layer to slow down future algae build-up, keeping your home cleaner for longer.
The Benefits of Professional Render Cleaning
-
Restores original colour and appearance.
-
Stops algae regrowth and staining.
-
Prevents costly repairs caused by trapped moisture.
-
Increases property value and kerb appeal.
-
Safe for all render types including painted, K-Rend, Weber, and Monocouche.
When Should You Clean Your Render?
Typically, Cornish homeowners should clean their render every 2–3 years, though south-facing and coastal properties may need it more often.
Signs your render needs attention:
-
Green or black algae stains.
-
Rust or red streaking.
-
White salt residue or efflorescence.
-
Patchy or uneven discolouration.
If your property faces the sea or sits near vegetation, more regular maintenance helps prevent deep staining and permanent discolouration.
Related Exterior Cleaning Services
Atlantic Clean provides complete property care for homes and businesses across Cornwall:
Each service is designed to complement one another — giving your entire property exterior a new lease of life.
FAQs About Render Cleaning
Q1: Is softwashing safe for all types of render?
Yes, softwashing is safe for painted, K-Rend, Monocouche, and silicone render. It uses gentle pressure and eco-friendly biocides that clean without damaging the surface.
Q2: How long does render cleaning last?
Most renders stay clean for 2–4 years after a professional softwash, depending on location and exposure.
Q3: Can render cleaning remove red stains or rust marks?
Yes, Atlantic Clean can treat red algae, rust marks, and other stubborn stains using specialised cleaning agents.
Q4: Will render cleaning affect paintwork?
Our cleaning process is non-abrasive and safe for most painted finishes. We always test a small area first to ensure compatibility.
Q5: Do you clean commercial buildings?
Yes, we clean schools, offices, apartment blocks, and commercial properties throughout Cornwall.
To learn more about our services, explore these detailed cleaning guides:
- Exterior Cleaning Services
- Gutter Cleaning
- Pressure Washing
- Roof Cleaning
- Wall Softwash Cleaning
- Window Cleaning
We take pride in the feedback we receive from satisfied customers. If you’ve used our services, please leave a review on our Google page:
Review Atlantic Clean on Google
Need help? For expert exterior cleaning across Cornwall and the South West, call us on 07958 011 031 or email info@atlanticclean.co.uk today for a free quote.
