Is it safe to pressure wash a roof?

Blasting a roof with a pressure washer is exactly what you should not do. High pressure strips the protective surface off the tiles, forces water under them, and can crack older clay and concrete. We scrape the moss off by hand and then soft-wash, applying a biocide at low pressure that kills the moss and algae at the root so it weathers away over the following weeks. The tiles are left intact.

Why does my roof go green and mossy?

Moss and algae live on damp and shade, so north-facing roofs and ones under trees get it worst. It is not just cosmetic: thick moss holds water against the tiles and drops into the gutters and downpipes, blocking them. Clearing and treating it protects the roof as well as tidying it up.

How long does the result last?

The soft-wash biocide keeps working after we leave, so the roof carries on clearing for weeks and stays clean far longer than a scrape alone. How long depends on the aspect and the trees around you. For a badly affected roof we can apply a stronger or repeat treatment.

Roof Cleaning in South London

Name: All Well Cleaning
Address: South London, London, GB
Telephone: 020 8050 5955
Price range: ££

Roof cleaning and moss removal across South London.

Get a Free Quote Call 020 8050 5955

All Well Cleaning provides roof cleaning across South London. We work from the ground with the right kit for the surface, give you a fixed price up front, and for windows and gutters set you on a regular round you can rely on. Call 020 8050 5955 for a free quote.

What We Offer

Roof cleaning and moss removal across South London. We clear the moss off your tiles, treat the roof with a soft-wash biocide that kills the spores at the root, and leave it to weather clean over the following weeks, with no high pressure that could lift or crack a tile.

✓Moss scraped and cleared from the tiles
✓Soft-wash biocide treatment to kill spores at the root
✓Gutters cleared of the moss we bring down
✓No high-pressure washing on the tiles
✓Clay, concrete and slate roofs
✓Optional return treatment for heavy cases

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How we price roof cleaning

A fixed price before we start, worked out from a few photos or a quick look, not an hourly rate. For most cleans we can give you the price straight from photos, with no surprises on the day.

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What Affects the Cost?

•Size and pitch of the roof
•How much moss and algae has built up
•Tile type (clay, concrete or slate)
•Access and whether scaffolding or a platform is needed

Roof cleaning that protects the tiles, not just the look

A mossy roof is doing more than looking untidy: it holds damp against the tiles and sheds into the gutters, which is where a lot of South London damp problems begin. We clear and treat roofs the careful way, by hand and soft-wash rather than high pressure, so the tiles are protected and the moss stays away for longer. If the gutters are full of what came down, we clear those too.

Recent Roof Cleaning Work

Roof Cleaning across South London

Mossy roof half cleaned on a South London semi showing the difference

Soft-wash treatment being applied to a tiled roof

Cleared clay tiles after moss removal on a period home

Moss cleared from the roof and out of the gutters below

Our roof cleaning specialisms

Roof Moss Removal

Roof moss removal across South London.

Frequently Asked Questions

Is it safe to pressure wash a roof?: Blasting a roof with a pressure washer is exactly what you should not do. High pressure strips the protective surface off the tiles, forces water under them, and can crack older clay and concrete. We scrape the moss off by hand and then soft-wash, applying a biocide at low pressure that kills the moss and algae at the root so it weathers away over the following weeks. The tiles are left intact.
Why does my roof go green and mossy?: Moss and algae live on damp and shade, so north-facing roofs and ones under trees get it worst. It is not just cosmetic: thick moss holds water against the tiles and drops into the gutters and downpipes, blocking them. Clearing and treating it protects the roof as well as tidying it up.
How long does the result last?: The soft-wash biocide keeps working after we leave, so the roof carries on clearing for weeks and stays clean far longer than a scrape alone. How long depends on the aspect and the trees around you. For a badly affected roof we can apply a stronger or repeat treatment.

Related Services

Gutter Cleaning Render Cleaning Pressure Washing

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