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
Roof Cleaning & Moss Removal in London
Moss, lichen and algae cleared from roof tiles and slate with a soft wash, done from the ground so nobody walks on your roof. Free quotes across London.
The job, explained
What roof cleaning & moss removal involves
Roof moss is not just a look. It holds water against the tiles, pushes into the gaps between them and washes down into the gutters, so a green roof often turns into a blocked gutter or a damp problem. We clear it with a low-pressure soft wash and a biocide treatment that kills moss, lichen and algae at the root, rather than blasting the tiles with a pressure washer and taking the surface off them. The whole job is done from the ground with a Roof Wand, so nobody walks on your roof and there is no scaffold to book. Danial Ebrahimi, who runs Techno Clean, trained on that system with the British Window Cleaning Academy in June 2026.
What's included
- Moss, lichen and algae removed across the whole roof
- Low-pressure soft wash, no pressure washer on your tiles
- Biocide treatment that keeps working on regrowth
- Cleaned from the ground, nobody walking on your roof
- Concrete tile, clay tile and natural slate roofs
- Windows, walls, paths and planting protected and rinsed down
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.
BeforeAfterWhy 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.
Trained for this workBWCA approved and trained
Good to know
Common questions.
How much does roof cleaning cost?
We don't publish a fixed roof price, because the number depends on things we have to see: the size and pitch of the roof, how thick the moss has got, the tile type, and how much of it we can reach from the ground. What we can promise is a clear fixed quote before we start, usually back with you within one working day, and nothing added on afterwards.
Do you walk on my roof to clean it?
No. We clean roofs from ground level using a Roof Wand, which is a telescopic lance worked from below. That means no ladders leaning on your gutters, no scaffold to hire, and none of the cracked tiles and slipped slates that come from someone standing on a roof that was never built to be walked on.
Can you jet wash the roof instead? It looks quicker.
We don't pressure wash roofs, and we'd talk you out of letting anyone else do it either. High pressure strips the granular coating off concrete tiles and forces water under the laps, which is why a jet-washed roof can look brilliant for one season and worse than it started after two winters. A soft wash takes longer to show its full result, but it doesn't damage the thing it's cleaning.
How long before the moss is actually gone?
The heavy growth comes off on the day. The biocide then carries on working after we leave, so the finer black staining and the last of the lichen keep fading over the following weeks as the weather washes the dead growth away. If your roof was badly covered, expect it to keep improving for a while rather than looking finished the moment we pack up.
Does this work on slate as well as concrete tiles?
Yes. Concrete tiles, clay tiles and natural slate all clean up well with a soft wash, because the method doesn't rely on force. Slate is a particularly poor candidate for pressure washing since it delaminates. We look at the roof and its condition first and tell you straight if anything about it changes what we'd recommend.
Do you seal or coat the roof afterwards?
No. Roof coatings and sealants are a separate trade with their own training, and we'd rather say so than sell you something we're not set up to do properly. What we do is clean the roof and treat it so the growth stays off for as long as possible. If you want a coating quoted, that's a job for a roofing contractor.
Is anyone on the team actually trained for roof work?
Yes. Danial Ebrahimi, who runs Techno Clean, completed the British Window Cleaning Academy's RW7 roof cleaning course in June 2026 and is trained on the Roof Wand ground-based system we use. We're also fully insured with £5m of public liability cover, which is worth checking with anyone you let near your roof.
Guides
Worth reading before you book.
How to remove moss from a roof without wrecking the tiles
When to leave it, why jet washing is a mistake, and what's legal to spray.
Read the guideHow often should gutters be cleaned?
What an overflowing gutter is telling you, and how to check it from the ground.
Read the guideHow to clean render without wrecking it
Why soft washing beats a jet wash, and what the render manufacturers say.
Read the guide
More exterior cleaning
Other services you might need.
Patio Cleaning & Sealing
Bring tired patios and paths back to life with a deep clean, then an optional seal to slow down moss, weeds and staining.
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.
Free quote
Tell us about the property.
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