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Surface Materials

 

Render

Render often becomes discoloured as a result of environmental and organic pollutants. Care must be taken when cleaning render to ensure that the surface is not broken or compromised.

Where Used

Where Used

Render is applied to external walls to achieve a smooth or textured surface. Traditional render is cement based and can be tinted or painted after application. Cement render can also be modified to incorporate acrylic - a mixture of plastic polymers and petroleum, to create a more  water risistant and resilient surface. 

The primary cause of the discoloration of render is the growth of a biofilm - a mixture of moss, algae and lichens. Many factors influence the growth of a biofilm including; the direction of the building, the ph of the surface, moisture levels and temperature. As a result different facing rendered facades may have a different type of biofilm growth.

We clean; StoRend, Parex, K Rend, Weber, Wetherby and Monocouche. 

Cleaning Method

Cleaning Method

We usually follow a three-step cleaning process on render cleaning projects. We start by cleaning the surface using our SteamPLUS technology - using pressurised steam at 150°C with pressures as low as 40 Bar. This delivers an impressive yet gentle clean and ensures that all the surface based dirt and algae deposits have been effectively removed.

We then treat the surface with a special Render Wash which is particularly effective at killing the algae and moss that has become ingrained into the render. It also contains a fungicide which helps ensure eradication of spores. A final clean, again using SteamPLUS, leaves the surface looking as good as new. 

By using our SteamPLUS system the render dries quickly which means that moisture is not driven deep into the render. If water penetrates it can become trapped and subsequently freeze and then expand during the winter months.  The frozen moisture expands and causes cracking or blowing which can lead to costly repair work.

Because SteamPLUS produces steam at 150°C it kills the surface based spores along with any other living organic materials.

SteamPLUS cleans gently and so does not cause the scarring and damage that is frequently associated with traditional jet washing methods.

 

Specialist access

Our expertise in specialist access allows us to deliver brilliant exterior surface cleaning regardless of the complexity of a project.

Surface material

An in-depth understanding of different building materials means we can achieve outstanding results whilst mitigating risk of damage.

Service levels

Our aim is to raise-the-bar in the cleaning industry and deliver the very highest levels of customer service.

Related Case Studies

Warehouse cleaning

We recently cleaned the exterior of a huge warehouse as part of a refurbishment project. Work consisted of cleaning black and green algae off the external metal clad walls, roller doors and brickwork.

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Algae removal for San Lorenzo Court

When the walls of San Lorenzo Court - a contemporary retirement development in Saint Ives, Cornwall - became stained by unsightly black algae OneFifty knew exactly what to do.

Read full case study

Creative thinking delivers huge savings

OneFifty has just completed a large StoRend render cleaning project for Balmoral and Waverley House. We worked in close collaboration with Jones Building Company to design an access plan that saved thousands of pounds.... 

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Going for gold – returning Cotswold stone to its former glory

The render, stonework, sills and coping stones on The Grove had become scarred with algae and needed to be cleaned. We won the contract because of the high standard of our work, our professional approach and competitive rates.

Read full case study

Transformational cleaning at a fraction of the cost of repainting

The Water’s Edge occupies a prime waterfront position in the exclusive Knap area of Barry in Wales. These attractive, white rendered apartments have stunning views over Heritage coastline, including the Bristol Channel and the Somerset coastline. Unfortunately, there is a downside of this wonderful location.

Read full case study

Contact Us

Send us your contact details and a member of our team will be in touch to discuss your requirements. If you upload an image of the surface you want cleaned we can provide you with an indicative quote.  

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Some of our clients

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Client Testimonials

“Excellent to deal with from start to finish, very professional in their attitude and kept us informed at every stage. ”

Esther Hunting - Warwick Estates

“Thank you for sending the photos, it all looks amazing! ”

Robbie Irens - Gordon and Co

“The work was carried out to a very high standard and we would not hesitate to use you again.”

Cathering Stott - Eunomia Research & Consulting

“We were delighted with the high standards they achieved.”

Terri - DJ Foley Property Consultants

“They were able to remove the remnants of graffiti that had not been removed previously using chemicals.”

Joe - Hillcrest Estate Management

“The works surpassed my expectations! I will have no problem referring you to my friends and business associates.”

Andy Lane - Lane Pearson Automotive Group Ltd

Our Accreditations