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Moss and lichen

Moss and lichen are micro-organisms which adhere to a solid surface. Both require moisture to grow and reproduce, so thrive in damp, sheltered or shaded areas. Poor drainage conditions contribute to growth on paths and hard surfaces, moss particularly likes a pitted surface that allows it to set down roots. Growth tends to be more significant in autumn and winter, but can happen at any time if the surface is persistently damp and shady.

In the built environment moss and lichen can grow on many hard exterior surfaces such as tiles of roofs, stone or brick façades, block paving, flag stones and wooden cladding, decking and furniture. They can make exterior terraces, pathways and steps extremely slippery and potentially hazardous.

Moss and lichen Cleaning

Cleaning

To remove moss and lichen we use a combination of steam cleaning and a biocide (DC64). The combination of the heat and the biocide chemical ensures that they are thoroughly eradicated and helps inhibit re-growth. The results can be transformational.

Moss and lichen Prevention

Prevention

Where possible, cut back foliage to improve air flow and allow the sun and wind to dry the site. Ensure surfaces slope slightly to prevent standing water and improve drainage. Opt for permeable paving when constructing new hard surfaces and surface finishes that give grip in wet weather - especially in shady spots. Apply a biocide growth inhibitor.

Related Case Studies

Golden Lion Court – a roaring success

Golden Lion Court in Redcliff Street, Bristol has an attractive Bath stone façade as well as a spacious interior courtyard also in Bath stone. The stone had become discoloured and was in need of a really good clean to restore it to its former glory.

Read full case study

Grosvenor Court

We were requested by BNS Property Management to clean the front walls and pathways of Grosvenor Court, Bristol.

Read full case study

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

Some of our clients

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Client Testimonials

“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

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

Lucy - Jones Lang LaSalle

“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

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

Jason Husk - RelyOn Services

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

Bloq Management Services

“It is refreshing to work with such a dynamic, enthusiastic and reliable team.”

Adam Coombs - Regional Director, Hillcrest

Our Accreditations

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