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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.

Cleaning

To remove moss and lichen we use a combination of SteamPLUS 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.

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.

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Related Case Studies

One building, four surface types! Our system works its magic across all four.

St George's Heights is a modern apartment block located in Redfield, in South Bristol. The building façade is made up of four different substrates; wooden cladding, brick work, cement and K Rend render. Each of these surfaces requires a slightly different method of cleaning which was no problem for our cleaning system.

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What's a six tonne spider got to do with jet washing?

We have acquired a reputation for problem solving, especially when it comes to cleaning buildings with tricky access. One Glass Wharf is a good example as it required various specialist access equipment including a six tonne spider!

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'Wood' as new - steam cleaning outdoor furniture

It might surprise you to know that as well as cleaning hard surfaces such as concrete, stone and brick our SteamPLUS system is brilliant for cleaning wooden garden furniture.

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Some of our clients

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Client Testimonials

“The works surpassed my expectations! I will have no problem referring you to my friends and business associates.”

Andy Lane - Lane Pearson Automotive Group Ltd

“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

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

Tom Brady - MD Building Services

“If we need a job to be carried out at short notice they do everything necessary to make it happen, including getting required approvals to allow them to get on site and get the job done.”

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, Cheltenham Borough Council

“Looks really good, we are very impressed with your state of the art cleaning equipment. Please pass on our thanks to Andy.”

Adam Reynolds - Cheltenham Borough Council

Our Accreditations