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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

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. 

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.  

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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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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.

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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.

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Some of our clients

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Client Testimonials

“I was very impressed with the finish your company produced and how quickly you managed to do it.”

Tom Brady - MD Building Services

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

Cathering Stott - Eunomia Research & Consulting

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

Les Richards - Board member of the RTM

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

Bloq Management Services

“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

“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

Our Accreditations

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