Render Cleaning
Commercial Surface & Render Cleaning
Many make the assumption that when external surfaces become tired or weathered then the only way to make them look like new again is to either paint or replace the surface with new material. The two environmentally friendly products we use are ‘Benz Blackwash’ and ‘Algoclear Pro’. This Video highlights their effectiveness.
Common Reasons for Render Cleaning
- Algae
Algae can leave unsightly green or red stains on your render. It grows in damp conditions and spreads quickly, making your walls look discoloured and dirty.
- Dirt and Pollution
Over time, dirt from traffic, factories, and the environment can build up on your render. This doesn’t just make it look dull—if left alone, it can attract even more dirt and grime.
- Moss and Mold
Moss, lichen, and mold often grow in shady or humid areas on exterior walls. Not only do they look bad, but they can also damage the render over time if not removed.
Cost Factors for Render Cleaning
- Area Size
The larger the surface, the more time and materials are needed to clean it properly.
- Type of Render
Some render types, like lime, are more delicate and require special care, which can increase the cost.
- Dirt Level
If the render is heavily stained or dirty, it may take more effort and cleaning products to get it looking new again.
- Access Challenges
For taller buildings or hard-to-reach areas, we may need extra equipment like scaffolding, which can add to the cost.
Contact us today to get a tailored quote!
Our Render Cleaning Technology
Blackwash is the only sodium hypochlorite based soft wash biocide that has full government approval from:
• The Irish PCD (Pesticide Control Division)
• The UK HSE (Health & Safety Executive)
• REACH (Registration, Evaluation, Authorisation & restriction of Chemicals)
We use Blackwash as a stand-alone soft wash solution, or in conjunction with power washing and/or Biocidal Wash.
Specs
Render Cleaning with BENZ Biocidal Wash
UK Health & Safety Executive (HSE) approval certificate number: 9936
Irish Pesticide Control Service (PCS) number: 9807
Specs
Render Cleaning with BENZ Blackwash
UK Health & Safety Executive (HSE) approval certificate number: 10161
Irish Pesticide Control Service (PCS) number: 9841
Render Cleaning FAQ
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What is the best way to clean render?
The best way to clean render is by using specialised soft wash solutions such as Benz Blackwash or Algoclear Pro. These products are designed to break down and remove algae, moss, and dirt without causing damage to the surface. When combined with the right techniques, such as low-pressure washing and biocidal treatments, they can restore the render to its original condition.
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Should old render be removed?
Not necessarily. Most old render can be cleaned effectively with professional cleaning solutions and techniques. This reduces the need for costly replacements or painting. However, if the render is severely damaged or structurally compromised, removal and replacement may be required.
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Why does render get dirty?
Render accumulates dirt due to environmental factors like pollution, algae or moss growth, and exposure to the elements such as rain and wind. Over time, these factors can cause discoloration or streaking, making the surface look weathered and unsightly.
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How often should you clean render?
The frequency of cleaning will depend on the location and exposure of your property. Typically, render should be cleaned every 2–4 years to maintain its appearance. Areas with high humidity or pollution may require more frequent cleaning.
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Should you pressure wash render?
Render is a delicate surface, and high-pressure washing is not recommended as it can cause damage. Instead, low-pressure cleaning methods combined with soft wash solutions are preferred, ensuring the render is effectively cleaned without harm.
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How much does it cost to have a render cleaned?
The cost of render cleaning varies depending on the size of the property, the extent of dirt or staining, and the cleaning method used. Contact us today for a customized quote tailored to your needs.
Flexible Working
One off jobs or flexible contract terms to suit all businesses for all our cleaning services.
Safe Contractor
For peace of mind we are Safe Contractor Approved, fully insured and carry out all work to highest standards
Cleaner Cardiff
For cleaner windows, shops, factories and buildings in the Cardiff area - contact us with your requirements.