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Algae

Algae requires moisture to grow and reproduce so it thrives in damp, sheltered or shaded areas. Growth tends to be more significant in autumn and winter, but can happen at any time if the surface is persistently damp and shady. Algae can be different colours - such as red, green and black - depending on the environment that it grows in. Algae near the seaside often appears red in colour due to marine salts in the atmosphere.  

In the built environment algae typically affects hard exterior surfaces such as stone or brick façades or block paving, It creates unsightly stains and can contribute to the degeneration of the surface material. It can also make exterior terraces, pathways and steps slippery and potentially hazardous.

Cleaning

We follow a three-step approach to cleaning algae; a first pass, to clean the surface layer of algae using SteamPLUS. Then we apply a special render wash to even out the surface followed by second pass with SteamPLUS to complete the cleaning process.

Prevention

Algae spores are air-bourne, therefore algae can be a persistent problem on any damp and shady exterior surfaces. To address this issue we apply a growth inhibitor that helps discourage re-growth and keeps the surface clean for longer.

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Related Case Studies

Major project carried out with minimum fuss

OneFifty was contracted to carry out external cleaning of a sizeable office premises in Temple Quay. Using cherry pickers and ropes we were able to reach and clean every inch of the building exterior.

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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

Tried and tested nationwide cleaning

Regular exterior cleaning for Big Yellow Self Storage has allowed us to stress-test our nationwide service and ensure that we are hitting the mark for quality of cleaning, timeliness of delivery and customer service.  

Read full case study

Commercial office clean - London

Gredley House, a five-storey detached office building on the busy road in north east London, had become dirty from carbon staining and algae.

Read full case study

Nationwide Block Paving Cleaning

OneFifty works with property owners and managers throughout the UK to help keep the paved spaces around their buildings looking their brilliant best.

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

“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

“Their work is excellent – I recently visited a building that they cleaned for me 18 months ago and it still looks brilliant.”

Daniel Boyle - MD of Relyon Services

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

Lucy - Jones Lang LaSalle

“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

“Quite simply a very professional, friendly, family business that provides good value for money. ”

Les Richards - Board member of the RTM

Our Accreditations