Driveway Cleaning & Sealing
Lift years of dirt, moss and oil from block paving, concrete and stone, then seal it to keep the finish looking new for longer.
Exterior Cleaning
Patio Cleaning & Sealing in London
Bring tired patios and paths back to life with a deep clean, then an optional seal to slow down moss, weeds and staining.
The job, explained
What patio cleaning & sealing involves
Patios and paths are where green algae and ground-in dirt show up fastest, especially after a damp London winter. We bring slabs, paving and natural stone back to their proper colour, clear out the joints, and can seal the surface to keep it cleaner for longer.
What's included
- Moss, algae and weed pre-treatment
- Deep clean across slabs, pointing and edges
- Joint re-sanding where needed
- Optional sealant to resist staining
- Care taken around borders and planting
- Full rinse and tidy-up
How our pricing works
Every property is different, so we price each job on its size, condition and access. You get a clear, fixed quote up front with no surprises, usually within one working day.
Real results
See the before and after.
Drag the slider to see the difference on a job we've actually done. There are plenty more in the gallery.
BeforeAfterReal jobs, not stock photos
More before and afters.
Every one of these is a job we did, photographed by our team before and after.
Before
AfterTiled front steps
Black tiled entrance steps cleaned of ground-in dirt and grime.
Before
AfterTiled entrance landing
Dirt and marks cleaned off a black tiled landing outside a front door.
On the job
Watch us at work.
Short clips our team filmed on real patio cleaning & sealing jobs. No stock footage.
Surface cleaning a courtyard
A rotary surface cleaner on an outdoor courtyard floor.
Why Techno Clean
A finish you can see, from a team you can trust.
We turn up when we say we will, use the right approach for each surface and leave the work looking the way it should.
Fully insuredPublic liability cover of £5m so your property is protected.
Trained, vetted teamA reliable local crew, uniformed and checked before they start.
Right method per surfaceThe correct equipment and products for each job, no shortcuts.
Clear quotesA fixed price agreed up front, with no surprises afterwards.
Good to know
Common questions.
Can you get rid of the green and black marks?
In most cases yes. The green is usually algae and the black is ingrained dirt or lichen, and both respond well to pre-treatment plus a proper clean. Very old staining can be lightened rather than fully removed, and we'll tell you honestly what to expect.
Is sealing worth it?
If you want the patio to stay cleaner and resist stains from food, drinks and weather, sealing is a good idea. It's optional and we quote it separately so you can decide.
Guides
Worth reading before you book.
More exterior cleaning
Other services you might need.
Soft Washing & Render Cleaning
A low-pressure, surface-safe wash for render, brick, stone and painted walls that lifts algae and green growth without damage. The whole outside of the house, done properly. Free quotes across London.
Cladding Cleaning
Black streaking and algae washed off cladding panels, curtain walling and fascias with low pressure, for blocks, shopfronts and commercial units. Free survey across London.
Free quote
Tell us about the property.
Use this short form to request pricing. Tell us the job, the postcode and your dates, and we'll come back with a clear quote.
Fast, straightforward repliesMost quote requests receive a response within one working day.