Business Details
41 Years
experience
Professional Render Cleaning Services in Kent & South East London
Purple Rhino has been a leader in exterior building maintenance since 1985, specialising in render, cladding, and stone cleaning. Our founder, Darran Smith, brings over four decades of expertise in soft washing methodologies, having pioneered this technique across the UK after studying its development in the United States. We prioritise safety and preservation, employing low-pressure systems that protect delicate surfaces while eliminating organic growth. Our team undergoes rigorous training through the SoftWash Systems Certified Applicator programme, ensuring adherence to global standards.With a focus on customer satisfaction, we offer comprehensive services including porosity testing, thermal imaging, and hydrophobic coating applications, backed by a 10-year guarantee. Our commitment to environmental responsibility is evident in our waste management practices and use of biodegradable solutions. Trusted by homeowners and commercial clients alike, we serve Kent, Surrey, Essex, Sussex, and South East London, maintaining a reputation for excellence through transparent communication and meticulous service delivery.
Services
Render Cleaning
Cladding Cleaning
Stone Cleaning
Soft Washing
Pressure Washing
Details
- Year established: 1985
Highlights and features
- We have over 40 years of experience in specialist exterior cleaning.
- Our patented Soft Washing Method prevents surface damage.
- We offer a 10-year guarantee on hydrophobic coating systems.
- All surveys include free porosity testing and thermal imaging.
- Our team holds IPAF and PASMA certifications for safe access.
Associations and certifications
- SoftWash Systems Certified Applicator
What people say
Marvellous job
Brand new look
Excellent communication
Thoroughly recommend
Polite efficient service
Services
Render Cleaning
Our render cleaning service uses science-led soft washing to safely remove algae, mould, and stains from rendered surfaces. We conduct porosity testing to determine optimal cleaning solutions, ensuring no damage to delicate finishes. Thermal imaging identifies hidden moisture issues, while our hydrophobic coatings provide up to 10 years of protection against future growth.
Cladding Cleaning
Specialist cladding cleaning employs low-pressure methods suitable for plastic-coated steel, cedar wood, and metal panels. We use biodegradable chemicals that sanitise surfaces without UV damage risks. Our technicians adapt cleaning strength based on material type, ensuring safe removal of organic growth while preserving surface integrity.
Stone Cleaning
Professional stone cleaning restores limestone, sandstone, and granite surfaces using temperature-controlled steam and pH-neutral solutions. We employ soft washing for delicate surfaces and hot/cold pressure washing for durable stone. Each treatment includes pre-cleaning protection for surrounding vegetation and thorough post-treatment sealing recommendations.
Soft Washing
Our soft washing system combines sodium hypochlorite, surfactants, and water in precise 97:2:1 ratios to sanitise surfaces without high-pressure damage. This method effectively treats render, roof tiles, and cedar fencing, with results lasting 2-3 times longer than traditional pressure washing through root-level organic matter elimination.
Pressure Washing
Commercial pressure washing services utilise variable-flow equipment with adjustable PSI settings for different surface types. We employ both cold and hot water systems, delivering 15-30 litres per minute water flow to remove stubborn grime from concrete and brick surfaces while maintaining strict safety protocols to prevent surface erosion.
People
Darran Smith
Managing Director
With over 40 years in exterior cleaning, Darran pioneered soft washing in the UK after studying US techniques. He trains other professionals through the SoftWash Systems programme and holds multiple safety certifications. His expertise spans historic building restoration and modern commercial projects.
Teodora Smith
Finance Director
Teodora manages financial operations and client billing processes. With 15 years in business finance, she ensures transparent pricing structures and efficient payment systems. She oversees the company's ethical supplier partnerships and budget management protocols.
Chris Southworth
Render Cleaning Surveyor
Certified IPAF and PASMA technician with 12 years' experience conducting detailed property assessments. He specialises in porosity testing and thermal imaging analysis, creating custom cleaning specifications for complex architectural projects across the South East region.
Jamie Hutton
Lead Render Cleaning Technician
Lead technician with 8 years' field experience implementing soft washing systems. Trained in both UK and US methodologies, he supervises cleaning operations and mentors junior staff. Holds advanced certifications in chemical application safety and surface protection.
Charlie Lee
Lead Technician
Multi-certified technician specialising in difficult-to-access areas. With 10 years' experience, he combines traditional cleaning methods with modern technology. Leads teams on large-scale commercial projects and provides technical support for complex residential cases.
Questions
Can you clean silicone render?
Yes, we use soft washing techniques specifically adapted for silicone render. Our low-percentage solutions safely remove algae and mould without damaging the finish, typically requiring repeat treatments for optimal results.
Do you work with all render brands?
We specialise in K-Rend, Monocouche, Parex, Weber, Sto, Permarock, and SPS Envirowall. Every project includes porosity testing to determine the exact soft wash blend required for your specific render type.
Is limestone render more difficult to clean?
Yes, limestone requires lower solution percentages and longer dwell times. Our technicians typically perform 3-4 treatments to achieve excellent results while protecting the stone's porous structure.
Do you offer guarantees?
We provide a 10-year guarantee on hydrophobic coating systems. All cleaning work includes a written fixed-price quote with no hidden costs, and we offer annual maintenance checks for continued protection.
How do you handle waste water?
We contain and manage all waste wash water to prevent environmental contamination. Our practices comply with UK regulations, ensuring no storm drain pollution and full liability protection for property owners.
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Reviews (1)
Donna Gambrill
Jan 07, 2016
Report
Fabulous company helpful and very accommodating. Nothing is too much trouble totally first class Donna of Ashford
