Block Paved Driveway Cleaning in Maidenhead
An overgrown block paved driveway in Maidenhead, cleared by hand, deep cleaned, treated with Chiltern EverGuard™, re-sanded with polymeric sand and compacted.
Patio Cleaning · Berkshire
Patio Cleaningin Windsor
Around Windsor, period houses, Thames-side homes and newer streets sit close together, and many gardens are a patchwork of sun and shade. We clean each part of the patio to suit the stone, treat black spot and apply Chiltern EverGuard™.
- Black spot treated at source
- Steps and edges detailed
- Lowest effective pressure
Our approach
Sun on one side, shade on the other so no two slabs weather alike
Most patios have a bright centre, a shaded strip beside the house and a damp margin near the planting. Each needs a different amount of attention, and treating the whole area as one surface leaves either the edges green or the open slabs overworked. We look at those zones together at a free site visit and explain the plan for each.
Windsor gardens
Old walls, river air and the shade they bring
Windsor grew outward from the Castle over many centuries, absorbed Clewer as it expanded, and gained whole new streets after the railways arrived in the nineteenth century. The result is a close mix of period brick homes, established suburban roads and newer housing, and the gardens behind them range from compact walled plots to broad lawned terraces.
Where a patio is overshadowed by a garden wall, a neighbouring building or mature trees, it may see direct sun for only part of the day. Add the damp air of the Thames along the town's northern edge and you have paving that dries slowly: ideal ground for algae, moss and the black spot lichen that marks sandstone.
Black spot
Why black spot survives an ordinary wash
Black spot is a lichen, not dirt. It grows into the pores of natural stone, particularly sandstone and limestone, which is why it is still there after the algae and loose grime have rinsed away. Turning the pressure up only scars the stone around it.
We treat it in two stages. The visible marks are dealt with through a controlled combination of pressure and a specialist application. The Chiltern EverGuard™ Treatment then works into the porous surface to target the live growth at its source. Heavily marked stone can need a second visit, and we say so at the outset.
Steps and levels
Treads, risers and the step down to the lawn
Garden steps have flat treads, upright risers and exposed nosings, and each collects growth in its own way. Algae on a tread matters more than anywhere else on the patio, because that is where a wet foot lands.
Where steps are included, we clean all three faces with pressure set for their material and keep the jet out of the joints. The top step is finished into the terrace so the two read as one surface rather than as separate jobs.
Beds and borders
Damp margins along raised beds and pots
Patios edged by raised beds tend to carry a darker band where soil, fallen leaves and moisture meet the paving. That strip can hold algae, leaf tannin and fine soil all at once.
We separate what will lift from what has stained into the stone, so the paving is not worked harder than it can bear in pursuit of every mark. Movable pots are cleared first, where you are happy for us to move them, so their footprints are cleaned along with everything else.
Run-off
Where the wash water goes
Patios fall towards a lawn, a border, a drain or a lower level, and loosened dirt follows that fall. We manage the working area so it is not simply washed into planting or left in a band at the lowest edge, and any accessible drainage points are cleared of material from the clean before we leave.
In a small walled garden there may be only one way out for the water, and that shapes the whole order of work.
Step by step
The order of work on every patio
We follow one sequence on every patio. The methods inside it are set by what we found at the site visit.
- 01
Assessment on site
We identify the paving, map the shaded and sunny zones, and check for black spot, failing joints, steps and drainage. You hear our recommendation and the result to expect before anything is agreed.
- 02
Clearing and preparation
Movable pots and furniture are set aside where you are happy for us to move them, and planting, doors and adjoining walls are considered before any water reaches the paving.
- 03
Cleaning by zone
Open slabs, shaded margins and steps are each given the attention their condition needs, at the lowest pressure that achieves a clean result on that stone.
- 04
Treating the black spot
Lichen marks receive a specialist application rather than more pressure. Joints that have washed out are re-sanded where needed so the slabs stay firm.
- 05
Protection and handover
The Chiltern EverGuard™ Treatment is applied to the clean surface, and we walk the patio with you, explaining what was done and what to expect over the coming months.
Honest limits
What cleaning will not change
The aim is a clean, safer patio that still looks like its own stone. A few things sit outside what cleaning can do, and we point them out at the site visit rather than after the work.
- Colour variation in sandstone is natural and will stay
- Failed mortar or pointing is a repair, not a clean
- Grease soaked deep into stone may only lighten
- Heavy black spot can need a second visit
Why us
What you can expect from us
Zones, not one setting
Sunny, shaded and damp parts of the patio each get the treatment they need, rather than one pressure applied from end to end.
Black spot dealt with at source
A specialist application and the Chiltern EverGuard™ Treatment target the lichen within the stone, instead of scarring the surface trying to blast it off.
Steps and edges finished
Treads, risers, thresholds and borders are part of the job, so the patio does not look clean only through the middle.
Fully insured operatives
Every job is carried out by fully insured operatives, with planting, doors and neighbouring surfaces considered before the work begins.
Nearby
Patio cleaning around Windsor
Our patio work extends to the neighbourhoods and villages around the town, including Clewer and Dedworth to the west, Old Windsor and Datchet downstream, and Eton and Eton Wick across the river. The same assessment-first approach applies to each.
Patio Cleaning in nearby towns
What Clients Say
Trusted by homeowners across Buckinghamshire, Berkshire, and Oxfordshire.
Thank you to every client who has trusted us with their home. Your reviews mean a great deal to us. We’re proud to be fully insured, certified professionals — delivering proven results with a customer-focused approach on every single project.
5-Star Rated On Google
Questions
Patio Cleaning in Windsor: your questions
Can black spot be removed from sandstone?
Yes, in most cases, though not always in one visit. Black spot is a lichen rooted in the stone, so we treat it with a specialist application and then the Chiltern EverGuard™ Treatment rather than with more pressure. Heavily marked slabs can need a second visit, and we will tell you if yours are likely to.
Do you clean patio steps too?
Yes, where they are part of the agreed area. Treads, risers and nosings are cleaned with pressure suited to their material, and edges that are already chipped or loosely jointed are handled with extra care.
Why is the shaded side of my patio so much greener?
Algae needs moisture and does best where paving stays wet longest. A strip beside a wall or under trees may get little direct sun, so it dries slowly after rain while the open centre dries quickly. That is why we plan the clean by zone.
Will cleaning make my patio less slippery?
Usually, yes, because the slippery film is mostly algae and we remove it. No outdoor paving is ever free of slip risk in wet or icy weather, though, and growth will gradually return, faster in shade.
Should my sandstone be sealed after cleaning?
Sometimes. Sealing suits some stone and not others, and it changes how the paving looks. We will tell you honestly at the site visit whether yours is a good candidate, and why.
How long does the Chiltern EverGuard™ Treatment protect a patio?
Typically between 12 and 24 months. Paving in a walled, shaded garden near the river will usually sit nearer the shorter end; an open terrace that dries quickly, nearer the longer. It helps reduce regrowth rather than stopping it altogether.
More from us
Other services in Windsor
Roof Cleaning
Carefully remove moss, algae and lichens to protect your roof and enhance kerb appeal.
Learn Moreabout Roof Cleaning
Driveway Cleaning
Professional cleaning for block paving, tarmac and resin driveways, restoring colour and removing stains.
Learn Moreabout Driveway Cleaning
Soft Wash Treatment
Low pressure soft wash treatment designed to safely remove algae, mould and grime from exterior surfaces.
Learn Moreabout Soft Wash Treatment
Gutter Cleaning
Clear and flush blocked gutters and downpipes to protect your walls, fascias and foundations.
Learn Moreabout Gutter Cleaning
Solar Panel Cleaning
Pure-water cleaning that removes grime and shading to restore your panels' output and efficiency.
Learn Moreabout Solar Panel Cleaning
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? Commercial pressure washing is handled by our commercial team, surveyed and priced as a specified job.
Chiltern Surface Co
Book a free site visit for your patio.
We will look at the paving with you, show you where the black spot and algae are and explain how we would treat each part. A clear quotation follows, and the decision is yours.
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.