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. Instead we soft wash it from the ground: a biocide applied at low pressure that kills the moss and algae at the root, so the roof clears as the dead growth weathers off over the following weeks. No ladders on the roof, no walking the tiles, and nothing that could crack them.

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?

Soft washing is not an instant scrape. We treat the roof, and the dead moss then weathers and washes off in the rain over the following weeks. That gradual clear is gentler on the tiles and lasts far longer than a one-off scrape. How long it stays clean depends on the aspect and the trees around you, and 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 and give you a fixed price up front. For gutters and routine upkeep we can 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 soft wash the roof from the ground with a biocide that kills the moss and algae at the root, and the roof clears as the dead growth weathers off over the following weeks. No high pressure, no ladders on the roof, and nothing that could lift or crack a tile.

✓Soft-wash treatment applied from the ground
✓Biocide that kills the moss and algae at the root
✓Gutters cleared of any debris
✓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 (most roofs are treated from the ground; 3-storey or steep may need a platform)

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 treat roofs the careful way, soft-washing from the ground rather than blasting them or climbing over the tiles, so the roof is protected and the moss stays away for longer. If the gutters are full of what comes 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 by soft washing.

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. Instead we soft wash it from the ground: a biocide applied at low pressure that kills the moss and algae at the root, so the roof clears as the dead growth weathers off over the following weeks. No ladders on the roof, no walking the tiles, and nothing that could crack them.
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?: Soft washing is not an instant scrape. We treat the roof, and the dead moss then weathers and washes off in the rain over the following weeks. That gradual clear is gentler on the tiles and lasts far longer than a one-off scrape. How long it stays clean depends on the aspect and the trees around you, and 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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