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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.

Algae Cleaning

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.

Algae Prevention

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

Cleaning an historic landmark building in Bristol

Conservation efforts are part of the upkeep of Bridge House as a 19th century building; alongside interior refurbishment, exterior maintenance is vital to ensure its longevity. That’s where OneFifty comes in.

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

Royal makeover for Princes Court

Princes Court is an elegant residential development in the village of Tetbury, in the Cotswolds. OneFifty worked its exterior cleaning magic to  return the building to its former glory. 

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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

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

Some of our clients

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Client Testimonials

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

Lucy - Jones Lang LaSalle

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

Joe - Hillcrest Estate Management

“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

“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

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

Bloq Management Services

“The Jet Washing Company (now OneFifty) deliver the best quality exterior surface cleaning, high quality customer service, and excellent value.”

Will Mellor - Knight Frank

Our Accreditations

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