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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 steam cleaning. Then we apply a special render wash to even out the surface followed by second steam cleaning pass 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.

Related Case Studies

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

No slips for students at Bristol University

Keeping students and staff safe from slipping at Bristol University with pressurised steam.

Read full case study

K-Rend render cleaning in Portishead

When Jones Building Group needed a reliable exterior building cleaning company to clean the building’s K-rend render, wooden cladding and glass before beginning planned maintenance work, they contacted us.

Read full case study

Some of our clients

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Client Testimonials

“One Fifty provide a great service. We love the fact that someone is always there to answer a query, and the quality of work never disappoints.”

Lloyd Randall - Diverse Commercial Solutions

“Great customer service, operatives who clean the windows follow all H&S procedures and do a great job.”

Matt Baker - Soil Association

“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

“Thank you to you and your team for delivering such high standards of service whilst representing RelyOn.”

Jason Husk - RelyOn Services

“One Fifty from top management, costings and most importantly site crew were extremely professional and did a very good job.”

Tim Hanley - Lake Edge Ltd

Our Accreditations

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