Brick Cleaning and Soft Washing in Beaconsfield
Brick cleaning and soft washing in Beaconsfield: black algae and lichen treated on brick retaining walls and copings, then rinsed at low pressure.
Soft Wash Treatment · Buckinghamshire
Soft Wash Treatmentin Amersham
Amersham is two places in one: the old town on the Misbourne valley floor and the newer town on the hill above. Their walls differ, so we read each surface before choosing how to soft wash it.
- Brick, flint and render
- Garden and retaining walls
- Low-pressure application
Our approach
Valley or hill, the wall decides and the method follows it
We do not arrive with a fixed process. A soft brick wall with lime joints in the old town, a rendered gable on the hill and a retaining wall holding back a sloping garden each react differently to a cleaning solution and to water. At a free site visit we identify the material and the growth, then explain what we would use and why.
Amersham homes
Period brick below, twentieth-century render above
Old Amersham lies along the valley of the River Misbourne, and its long main street keeps a run of older houses in brick, flint and painted render, much of it within a conservation area. These are traditional materials, often laid in soft lime mortar, and a jet of water would scour both the face and the joints.
Amersham on the Hill grew up around the railway station during the twentieth century and has a different character, with inter-war and post-war houses, rendered elevations and later developments. Between the two, the valley sides mean many gardens are terraced, with brick retaining walls and steps that sit in shade for much of the day and collect algae, moss and lichen readily.
Garden structures
Retaining walls, steps and boundary walls
On a sloping plot the walls that hold the garden back are often in worse condition than the house. Soil pressing against the back keeps them damp, planting overhangs the top and the brick coping catches every drip, so moss settles in the joints and black and green staining spreads along the face.
These walls are soft washed in the same way as the house: the solution is applied at low pressure, given time to work, and rinsed down without forcing water into the joints. Where a coping is loose or the pointing has opened up, we tell you before cleaning rather than discover it after.
Traditional materials
Why flint and lime mortar are never jet washed
Flint is hard, but the lime mortar that holds it is soft and meant to weather slowly. A high-pressure jet can wash it out of the joints in moments, leaving gaps that let water in and loosening the flints. Old brick can be just as vulnerable, with a fired face protecting a softer core.
Soft washing lets the solution deal with algae, lichen and organic staining while the rinse stays gentle enough to leave the mortar and the brick face alone. Where a wall has already lost pointing, repair is a job for a builder who works with lime.
Render on the hill
Pale render shows every patch of algae
Light-coloured render makes a thin film of green look worse than it is, and the north side of a house or a wall close to hedging is usually where it starts. Before treating render we check for cracks, hollow areas and paint that is lifting, because a soft wash cleans a sound finish but cannot hold a failing one together. On sound render the improvement is usually significant, with the colour coming back evenly across the wall.
Chiltern EverGuard™
Protection applied after every clean
When the surface is clean, the Chiltern EverGuard™ Treatment is applied as the final stage. It works on spores and residual growth left in the surface and helps reduce how quickly algae and staining return.
Protection typically lasts between 12 and 24 months, depending on the location, the surroundings, the surface and how it is maintained. A shaded retaining wall in the valley may sit at the shorter end of that range, an open elevation on the hill at the longer.
The process
From the first look to the last rinse
Each stage has a purpose, and on sloping gardens with steps and terraces the preparation usually takes longer than the treatment itself.
- 01
Survey of every surface
At a free site visit we note what each wall is made of, how sound its joints and finish are, what is growing on it and how slopes and steps affect access.
- 02
Planting and paving shielded
Borders, lawns, glass and nearby paintwork are covered or wetted, and run-off is planned so it does not collect on terraces lower down the garden.
- 03
Low-pressure application
The solution is applied from poles or close at hand at low pressure and left to act on the algae, moss and lichen for as long as the surface needs.
- 04
Gentle rinse down
Walls are rinsed carefully from the top, at a pressure set for the material, and the planting beneath is rinsed clear at the same time.
- 05
Chiltern EverGuard™ applied
The clean surface receives Chiltern EverGuard™, and we go over the work with you, including any older staining that may keep lightening as it weathers.
Know the limits
A clean wall, not a repaired one
Soft washing removes organic growth and makes a significant improvement to most stained brick, flint, stone and render. It does not mend the wall underneath.
- Lost or crumbling mortar needs repointing, ideally in lime on older walls
- Cracked or hollow render and flaking paint need repair first
- Deep-set lichen marks and old weathering may lighten only partly
- Shaded walls on the valley sides will see growth return sooner
Why us
Reasons to have us look at your walls
Material first
We name the brick, flint, stone or render and the mortar holding it before any method is chosen, and explain the choice in plain terms.
Gentle on old joints
Low pressure throughout, so lime mortar, soft brick faces and painted render are cleaned without being scoured or stripped.
Gardens respected
Planting, lawns and terraces are protected and rinsed, with run-off managed on sloping plots so nothing settles lower down.
Fully insured
Fully insured operatives working from suitable access equipment, with the finished work explained to you before we leave.
Nearby
Around Amersham
We soft wash homes in the surrounding area as well, including Chesham Bois, Little Chalfont, Coleshill, Winchmore Hill, Hyde Heath and Chalfont St Giles. Older cottages and newer houses sit side by side across them, so every visit begins the same way, with the wall in front of us.
Soft Wash Treatment in nearby towns
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Questions
Soft Wash Treatment in Amersham: your questions
Can you clean flint walls without damaging the mortar?
Yes, in most cases. Flint walls are cleaned with a low-pressure solution and a gentle rinse, which leaves sound lime mortar in place. If the pointing is already loose or missing, we will point it out and suggest repair before cleaning.
Is Old Amersham treated differently from Amersham on the Hill?
Often, yes. The old town has more traditional brick, flint and lime, which need the gentlest handling, while the hill has more render and later brick. The stages are the same, but the solution, dwell time and rinse are set for each surface.
Can you clean a garden retaining wall?
Yes. Retaining and boundary walls are soft washed in the same way as the house. They are often damper because soil sits behind them, so growth can return sooner, and we look at the coping and joints before agreeing the work.
Will the solution harm the plants along the wall?
No, provided they are protected properly. Plants are covered or soaked with clean water before we begin and rinsed again afterwards, and on a sloping garden we also plan where the rinse water runs.
Why does the north side of my house stay green?
It receives little direct sun, so it stays damp for longer after rain, and algae needs moisture before anything else. On the valley sides, where slopes and trees add shade, the effect is stronger still.
How long does the protection last?
Chiltern EverGuard™ protection typically lasts between 12 and 24 months, depending on the location, surroundings, surface and maintenance. Shaded walls, and those with soil behind them, tend to sit at the shorter end of that range.
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Driveway Cleaning
Professional cleaning for block paving, tarmac and resin driveways, restoring colour and removing stains.
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Patio Cleaning
Specialist cleaning and restoration for natural stone, porcelain and concrete patios.
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Gutter Cleaning
Clear and flush blocked gutters and downpipes to protect your walls, fascias and foundations.
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Solar Panel Cleaning
Pure-water cleaning that removes grime and shading to restore your panels' output and efficiency.
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Winter serviceSlippery Paths, Steps and Patios
Winter cleaning that removes slippery algae and moss from paths, steps and patios, planned around the forecast.
- Slippery growth removed
- Planned around frost
- Chiltern EverGuard™ where suitable
Advice
Expert exterior cleaning advice
Looking after a commercial building, a managed site or a portfolio? Render and masonry cleaning is handled by our commercial team, surveyed and priced as a specified job.
Chiltern Surface Co
Have your walls assessed on a free site visit.
We will look at the house and garden walls with you, identify what is growing and explain the method we recommend. A clear quotation follows, and you decide from there.
Surface-specific recommendations
We assess your surfaces and recommend the right approach for the best, long-lasting results.
Clear, fixed quotation
You'll receive a detailed, transparent quote with no hidden extras.
No pressure or obligation
We'll provide honest advice so you can decide what's right for you.
Directly with the owner
Speak directly with the owner and get expert advice you can trust.