Professional Render Cleaning Services: Restore Your Exterior Finish
Is your building's render covered in unsightly green or black stains? These are typically algae and mould, which not only look bad but can also cause long-term damage. Our specialised render cleaning process safely removes these growths, rejuvenating your property's façade and protecting your investment.
Fully Insured
Certified Professionals
500+ Happy Customers
10+ Years Experience
Identifying and Treating Render Stains, Algae & Fungal Growth
Not sure what's causing your render discolouration? Our diagnostic guide helps you identify the problem, and our certified experts provide the right treatment for lasting results.
Green Algae & Moss
Why is my render turning green?
Cause: Organic growth thrives in damp, shaded areas. Left untreated, it penetrates render pores and causes permanent staining.
Solution: Soft wash treatment kills algae at the root, preventing regrowth for 2-5 years.
Black Stains & Lichen
Why is my render turning black?
Cause: Black staining is typically caused by atmospheric pollution, lichen, or black algae. Common on north-facing walls.
Solution: Specialist biocide treatment combined with soft wash removes black stains safely.
Rust & Metal Stains
Orange/brown streaks on render
Cause: Caused by corroding metal fixtures, nails, or iron deposits in water runoff.
Solution: Chemical treatment to neutralise rust without damaging the render substrate.
Efflorescence (White Salt Deposits)
White powdery marks on render
Cause: Moisture draws salts from the masonry to the surface. Indicates potential damp issues.
Solution: Gentle cleaning combined with assessment for underlying damp problems.
Red & Pink Algae
Red/pink discolouration
Cause: A specific algae species common in the UK, often mistaken for paint bleed.
Solution: Targeted biocide treatment to eliminate and prevent red algae return.
Render Types We Clean
All render systems covered
Cause: Monocouche, silicone render, K-Rend, acrylic render, painted render, pebble dash, spa dash.
Solution: Customised soft wash solutions for each render type to ensure safe, effective cleaning.
Not Sure What's Causing Your Render Stains?
Get a free expert diagnosis and fixed-price quote. We identify the problem and recommend the right treatment.
Why Soft Wash is the Only Safe Method for Render Cleaning
High-pressure washing can cause serious damage to rendered surfaces. Learn why our certified soft wash protocol is the professional choice for protecting your property investment.
Professional Soft Wash Method
- Low pressure (below 500 PSI) protects render integrity
- Biocide solutions kill algae, moss & lichen at the root
- Results last 2-5 years with proper treatment
- Safe for all render types: silicone, monocouche, K-Rend, acrylic
- Eco-friendly, biodegradable cleaning solutions
- No risk of water penetration behind render
- Compliant with UK health & safety standards
- Post-cleaning sealing available for extended protection
Dangers of Pressure Washing Render
- High pressure (2000+ PSI) erodes render surface texture
- Forces water behind render causing damp & mould
- Only removes surface dirt—algae regrows within months
- Can void render manufacturer warranties
- Damages silicone water-repellent coatings
- Causes cracking and accelerates render degradation
- Creates streaking and uneven appearance
- May expose underlying masonry or insulation
How to Spot Pressure Wash Damage on Your Render
Surface Erosion
Look for patchy, rough areas where the render's protective coating has been blasted away.
Streaking Patterns
Vertical lines or uneven colour patches indicate inconsistent pressure application.
Damp Issues
Internal damp appearing after cleaning suggests water has penetrated behind the render.
Render Cleaning Costs and ROI: What Influences Price & How to Hire an Expert
Understand the factors that determine render cleaning prices and why professional cleaning is a smart investment that protects your property value.
Property Size & Height
Larger properties and those requiring scaffolding or cherry picker access will cost more due to additional time and equipment.
Type & Severity of Staining
Heavy organic growth, rust stains, or efflorescence require specialist treatments and multiple applications.
Render Type & Condition
Different render systems (monocouche, silicone, K-Rend) require specific solutions. Damaged render needs careful handling.
Post-Cleaning Protection
Optional sealing treatments add to the initial cost but extend results from 2 years to 5+ years.
The Long-Term Value: Render Cleaning vs Repainting Costs
£300-£800
Average cost to professionally clean a standard 3-bed house render
£3,000-£8,000
Cost to re-render or repaint if damage from neglect or pressure washing occurs
5-10%
Potential increase in property value with well-maintained kerb appeal
Checklist: How to Hire a Reliable Render Cleaning Company
How Often Should Render Be Cleaned?
We recommend professional render cleaning every 3-5 years for most properties. North-facing walls, shaded areas, or properties near trees may need more frequent maintenance. Our post-cleaning sealing treatment extends this interval significantly.
Protect Your Property Investment with Professional Soft Wash Cleaning
Join hundreds of satisfied customers who chose safe, effective render cleaning over risky pressure washing.
How Does Soft Washing Protect Your Render?
We use a low-pressure soft wash method that is gentle on your render but tough on organic growth. This avoids the damage often caused by harsh pressure washing.
Assessment
Identifying the render type and the specific contamination to determine the best cleaning approach for your property.
Biocide Application
Applying a professional-grade biocide to kill the biological growth at the root, ensuring thorough treatment.
Gentle Rinse
A low-pressure rinse or letting the biocide work over time for a deep, lasting clean that won't damage your render.
Protective Treatment
Post-treatment applications to delay future regrowth, keeping your property cleaner for longer.
Before & After Gallery
See the dramatic transformation our professional render cleaning delivers
Residential Property - Cheltenham
Residential Property - Gloucester
Residential Property - Swindon
Residential Property - Stroud
Residential Property - Bath
Comercial Property - Birmingham
What Our Customers Say
Don't just take our word for it - hear from our satisfied customers across Gloucestershire and the Midlands
"Absolutely delighted with the results! Our render looked tired and green, but Skyline Softwash EC transformed it completely. The team were professional, punctual, and the house looks brand new. Highly recommend!"
Sarah Thompson
Cheltenham, Gloucestershire
"Excellent service from start to finish. They provided a detailed quote, turned up on time, and did a fantastic job cleaning our commercial property. The difference is remarkable and our clients have noticed!"
David Mitchell
Birmingham, West Midlands
"We were worried about damage to our period property, but the softwash method was perfect. Gentle yet effective - removed all the algae and moss without any issues. Great value for money and lovely people to deal with."
Emma Roberts
Gloucester, Gloucestershire
Render Cleaning FAQ: Your Questions Answered
Common questions about render stains, soft wash methods, costs, and maintenance from homeowners across the UK.
Black or green discolouration on render is typically caused by organic growth—algae, moss, lichen, or mould. These organisms thrive in damp, shaded conditions and are especially common on north-facing walls. Left untreated, they penetrate the render's surface and cause permanent staining. Our soft wash treatment kills these organisms at the root, preventing regrowth for 2-5 years.
Get Your FREE Render Cleaning Quote Today
Ready for professional render cleaning services? Contact our render cleaning specialists for a free, no-obligation site survey and fixed-price quote.
Call Our Specialists
Service Coverage
Gloucestershire, Midlands and South West UK