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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 Arrow

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

Surface material Arrow

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

Service levels Arrow

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

Related Case Studies

Façade cleaning for Oasis Academies

Oasis is one of the largest Multi-Academy Trusts in England. OneFifty was delighted to be asked to clean the façades of two of their Academy buildings.

Read full case study

Render cleaning: a cost-effective alternative to painting cycles

When our client asked for advice on an alternative to repainting a residential development, we knew how to save them time and money.

Read full case study

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

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.

Read full case study

Algae removal - San Lorenzo Court, Cornwall

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

Render Cleaning Services across the UK

London | Manchester | Birmingham | Liverpool | Leeds

 

Facade Cleaning Services across the UK

London | Manchester | Birmingham | Liverpool | Leeds

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Some of our clients

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Client Testimonials

“Please pass on my sincere thanks to guys for the demo and for getting Neptune cleaned.”

Wendy Tomlinson, Senior Conservation Officer for Cheltenham Borough Council

“It is refreshing to work with such a dynamic, enthusiastic and reliable team.”

Adam Coombs - Regional Director, Hillcrest

“Looks really good, we are very impressed with your state of the art cleaning equipment. Please pass on our thanks to Andy.”

Adam Reynolds - Cheltenham Borough Council

“The offending Graffiti was removed without trace using pressurised steam.”

Lucy - Jones Lang LaSalle

“They did a really great job of cleaning the high-level cladding on the building. I know that they offer a range of cleaning services and I will definitely be using them again in the future. ”

Christopher Haswell - Project Manager - Maddox Construction

“If we need a job to be carried out at short notice they do everything necessary to make it happen, including getting required approvals to allow them to get on site and get the job done.”

Daniel Boyle - MD of Relyon Services

Our Accreditations

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