London patio and decking cleaning · North London
Local patio and decking cleaning for Harrow and its 10 covered areas. Quiet outer-London suburbia around Harrow on the Hill, with one of the most diverse populations in the country.
Fixed prices
| Job | From | Typical time | What sets the price |
|---|---|---|---|
| Concrete flag patio, per m² | £4.50 | By area | Manufactured concrete flags take a standard rotary surface cleaner at full pressure without any risk to the finish. |
| York stone or sandstone patio, per m² | £6.50 | By area | Natural stone is more porous and softer than concrete, so it's cleaned at a lower pressure with a specialist stone-safe cleaner rather than the standard detergent. |
| Softwood decking clean, per m² | £5 | By area | Softwood boards need the pressure kept low and the nozzle kept moving, since a static jet will fur the grain and shorten the board's life. |
| Composite decking clean, per m² | £5.50 | By area | Composite boards need a wide fan nozzle and a lower bar pressure than timber, since a narrow jet can strip the capping layer that gives composite its colour and grip. |
| Decking oiling or re-staining after cleaning, per m² | £4 | Added to visit | Softwood decking needs re-oiling once dry to stay weatherproof; this is priced as a separate pass because it can only start once the boards have fully dried out. |
| Roof terrace or balcony deck, per m² | £7 | By area | No mains tap on most roof terraces means water is carried up by bowser, and drainage outlets have to be checked and cleared as part of the visit, not just the deck surface. |
Concrete flag patio, per m²
£4.50 · By area
Manufactured concrete flags take a standard rotary surface cleaner at full pressure without any risk to the finish.
York stone or sandstone patio, per m²
£6.50 · By area
Natural stone is more porous and softer than concrete, so it's cleaned at a lower pressure with a specialist stone-safe cleaner rather than the standard detergent.
Softwood decking clean, per m²
£5 · By area
Softwood boards need the pressure kept low and the nozzle kept moving, since a static jet will fur the grain and shorten the board's life.
Composite decking clean, per m²
£5.50 · By area
Composite boards need a wide fan nozzle and a lower bar pressure than timber, since a narrow jet can strip the capping layer that gives composite its colour and grip.
Decking oiling or re-staining after cleaning, per m²
£4 · Added to visit
Softwood decking needs re-oiling once dry to stay weatherproof; this is priced as a separate pass because it can only start once the boards have fully dried out.
Roof terrace or balcony deck, per m²
£7 · By area
No mains tap on most roof terraces means water is carried up by bowser, and drainage outlets have to be checked and cleared as part of the visit, not just the deck surface.
Domestic prices are the total you pay; managing agents and landlords are invoiced plus VAT at 20%. Furniture moved off the patio or deck before cleaning and put back after, and clearing debris from drainage gaps between deck boards, are included. Where a bowser or extended hose run is needed for a flat with no outside tap, that's shown as its own line.
Working in Harrow
What our crews walk into in Harrow is interwar semis and detached houses with driveways, plus 1960s flats around harrow town centre, and the mix changes street by street — Burnt Oak (HA8), Edgware (HA8) and Harrow (HA1) each behave differently on the day.
On the ground, driveway parking is the norm; the hill roads are narrow and harrow town centre has controlled bays and a one-way system. Locally that means wide estate roads with parking; the a5 shopping stretch has short loading windows and driveways common; the a5 and station gyratory are busy with short bays. Harrow sits outside the Congestion Charge zone, so only ULEZ applies to the van and the quote is that much simpler.
Roof terraces and raised decking added to flats across Harrow sometimes needed planning permission or a lease variation when they were built, and London Borough of Harrow can ask for evidence the drainage still works as designed. We check the deck boards and the drainage outlets are clear before and after cleaning, since a blocked gulley is what turns a clean deck into a leak into the flat below.
A hilltop village with a 900-year-old church, wrapped in interwar semis once the Metropolitan line pushed through. That history is why Harrow property behaves the way it does today.
Scope
Method
Step 1
Concrete, natural stone, softwood or composite, roughly the area, and whether there's an outside tap or the flat needs water carried up by bowser.
Step 2
Priced per square metre for the surface you have, with oiling, re-staining or a bowser water supply shown as separate lines rather than bundled in.
Step 3
Furniture and planters moved, deck board gaps cleared of leaf litter, and algae or lichen in shaded corners given a biocide soak before washing.
Step 4
Concrete at full strength; natural stone, softwood and composite all stepped down to protect the surface, using a wide fan nozzle on composite specifically.
Step 5
Softwood decking is left to dry before any oiling; drainage outlets on roof terraces are checked clear; furniture is put back once the surface is dry underfoot.
Coverage
Also in this borough
Block paving, resin-bound and imprinted concrete driveways cleaned, resanded and sealed.
Front paths, side returns and communal walkways cleaned without disturbing loose flags.
The wider outdoor jet washing hub covering every hard surface we clean.
New garden furniture built and levelled on the patio or deck once it's clean.
Two crew and a Luton or tipper; three where everything has to be carried through a hallway.
A full top-to-bottom clean of the property once it has been emptied.
Cuttings, turf and soil taken to a licensed composting site rather than to landfill.
Concrete flag patio, per m² starts at £4.50 in Harrow, and the ladder runs up to £7 for the largest job on the table above. Surface material first — natural stone and composite decking cost more per square metre than concrete because both need a lower pressure that takes longer to cover the same area — then access, since a roof terrace with no outside tap needs water carried up rather than run from a hose. The borough is outside the Congestion Charge zone, so there is no charge to pass on — only ULEZ, which our vans are compliant with.
We cover the whole borough: HA0, HA1, HA2, HA3, HA5, HA6, HA7 and HA8. On the ground that includes Burnt Oak, Edgware, Harrow, Kenton, North Harrow and Rayners Lane and Northwood.
Same-week across every borough, with weekend slots common through spring and early summer when garden and roof-terrace use picks up. North London is covered by crews already working in the borough, so travel time is not billed on top.
Driveway parking is the norm; the hill roads are narrow and Harrow town centre has controlled bays and a one-way system. Where a permit or a bay suspension is needed we arrange it with London Borough of Harrow and show the cost in the quote before you agree it. Nothing is added afterwards.
Yes. Interwar semis and detached houses with driveways, plus 1960s flats around Harrow town centre is exactly the stock we work in daily. Where there is no lift, the crew size is set by the floor level at quote stage, so a third-floor walk-up is priced as a third-floor walk-up rather than re-quoted on the doorstep.
Wastewater containing detergent or biocide is contained and directed away from surface water drains during the clean, and drainage outlets on roof terraces and balconies are checked and cleared as part of the visit. Certificates go out with the booking confirmation, which is what London Borough of Harrow tenancies and most local managing agents ask for.
One technician for a standard garden patio or deck; two for a roof terrace or balcony where water has to be carried up by bowser and furniture moved through a lift or stairwell. Vehicles are ULEZ-compliant, which matters in every Harrow postcode, and the crew carries everything needed to complete the job in one visit.
Replacing rotten, cracked or delaminating deck boards — that's a repair job, quoted separately by our decking team, Repointing or re-bedding natural stone patio slabs that have come loose or sunk and Deep oil or paint staining that has soaked into porous stone and may need professional poulticing rather than a surface wash. If something on that list turns up in Harrow, we tell you at survey and point you at the right trade rather than taking the booking anyway.
Free quote · 1-hour reply
Send a few details and you get a written quote for your Harrow address, with permits and charges shown separately.
No deposit is taken until the price and slot are confirmed in writing.
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