This websites uses cookies, by continuing to browse the site you are agreeing to our use of cookies. View our privacy policy.
Contact form

Send us your contact details and a member of our team will get back to you as soon as possible.

Enter security code:
 Security code

Surface Materials - Render

 

Render Cleaning

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 Is Render 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 resistant 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 amongst others:

  • StoRend
  • Parex
  • K Rend
  • Weber
  • Wetherby
  • Monocouche

Cleaning Render - The 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.

 

Related Render cleaning Case Studies

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

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

Bristol graffiti cleaning

Following St Paul's Carnival in Bristol, Portland Heights needed rapid graffiti cleaning to remove obscene words sprayed onto the building's exterior.

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

Some of our clients

burges-salmon-logoclient-big-yellowclient-bond-dicksonclient-bouyguesclient-bristol-sportclient-bristol-universityclient-first-portclient-foxclient-hmclient-ian-williamsclient-jllclient-lshclient-mccarthy-and-stoneclient-mcdonaldsclient-osborne-clarkeclient-porcelanosaclient-safestoreclient-sir-robert-mcalpineclient-suezclient-taylor-wimpeyclient-tcl-groupclient-tescoclient-turtle-bayclient-uniteclient-wickwarThe-Landscape-Group-logo(1)TRS_LOGO1Workman-logo

Client Testimonials

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

Wendy Tomlinson - Senior Conservation Officer, Cheltenham Borough Council

“A safe pair of hands - thorough, cost effective and report back in a timely fashion.”

Bloq Management Services

“OneFifty are always reliable, quick to respond and produce high-quality results.”

Lorna Barnet - Director of Barnet Development

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

Lucy - Jones Lang LaSalle

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

Cathering Stott - Eunomia Research & Consulting

“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

Our Accreditations

accreditation-safecontractoraccreditation-ipafaccreditation-pasmaaccreditation-avettaaccreditation-smasaccreditation-ssipaccreditation-cscs