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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

Preventing hazards at a development in Coed Darcy

Cleaning slippery steps at a property development near Swansea to prevent slip hazards.

Read full case study

Returning Cotswold stone to its former glory

The render, stonework, sills and coping stones on The Grove had become scarred with algae and needed to be cleaned. We won the contract because of the high standard of our work, our professional approach and competitive rates.

Read full case study

Long time, no clean for Parade Court

After 13 years, this residential block of flats got the makeover it deserved.

Read full case study

No slips for students at Bristol University

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

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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.

Read full case study
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Some of our clients

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Client Testimonials

“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

“I just wanted to let you know that we are on site today and think that the building is looking so much better, so thank you very much for that.”

Anita Pitts - Hartwell House

“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

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

Wendy Tomlinson - Senior Conservation Officer, Cheltenham Borough Council

“Excellent to deal with from start to finish, very professional in their attitude and kept us informed at every stage. ”

Esther Hunting - Warwick Estates

Our Accreditations

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