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Roof Cleaning in Caterham

Roof Cleaning in Caterham: moss and organic growth taken off the tiles by soft washing or pressure washing, whichever suits the roof. Caterham is served from Horley, homes and commercial premises alike. The first step is a free, no-obligation quote.

  • Moss and organic growth removal
  • Soft washing or pressure washing to suit the roof
  • Treatment options to help prevent moss returning
  • Domestic and commercial roofs
Roof Cleaning in Caterham by Dirty South Power Wash
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Roof Cleaning for homes and businesses in Caterham

Where a roof sits under or beside mature trees, which is easily done on the wooded Caterham slopes, constant organic debris changes what a roof clean is actually for. On a roof under a canopy the moss is only half the story. The other half is leaves and needles landing in the valleys and gutters continuously, and that is a drainage problem, not a cosmetic one.

Debris in a valley is more urgent than moss on a tile

A valley packed with leaf litter and moss stops carrying water away, and water that cannot get down the valley backs up under the tile edges either side of it. That is a genuine route into the building, and it is invisible from the ground.

On a tree-covered roof, clearing the valleys is worth more than cleaning the tile faces. Doing the valleys and gutters properly and leaving a bit of green on a south-facing pitch beats the other way round.

Realistic intervals under trees

A roof under a mature canopy does not stay clean. Leaves land every autumn, shade keeps the moss coming back, and organic debris feeds the whole cycle. Cleaning it works, and then the trees carry on doing what trees do.

The honest position is that this is maintenance rather than a one-off fix. On a roof under heavy cover, keeping the valleys and gutters clear regularly is far more valuable than a thorough tile clean every few years, and it costs less.

How we work

  1. 1
    Ground survey and access plan

    We look at the tile type, the pitch, the condition and how we are getting up there safely. Concrete interlocking, clay plain tiles, slate and older stone slabs all need a different touch, and a brittle tile is a repair bill waiting to happen.

  2. 2
    Agree the method before anything gets touched

    Some roofs suit careful scraping of the dry moss, some suit a soft wash and biocide, some suit both, and a few are best left alone. We tell you which one yours is, including when the answer is that a clean is not worth doing.

  3. 3
    Remove the growth and control where it falls

    Moss coming off a roof goes straight into the gutters and all over the ground below. That wants managing as the work goes on rather than leaving a garden full of it.

  4. 4
    Clear the gutters and downpipes afterwards

    A roof clean that leaves the gutters packed with moss has only moved the problem. Clearing them is what finishing the job properly looks like, so it is worth confirming it is in your quote.

  5. 5
    Biocide treatment and the honest timescale

    Where a treatment is used, it keeps working for weeks or months after we leave. The roof carries on lightening instead of looking finished the same afternoon, and that is worth knowing upfront.

We assess each roof first and use the safest method for the tiles and pitch.

Other services in Caterham

Roof Cleaning near Caterham

Real results

Roof Cleaning: before & after

Genuine before and after results from recent jobs across Surrey, Sussex and Kent.

Garage roof moss removal
Garage roof moss removal
Roof moss removal, before and after
Roof moss removal, before and after
Moss-covered roof cleaned
Moss-covered roof cleaned

Customer reviews

What our customers say

Dirty South Power Wash were absolutely fantastic from start to finish. They're extremely friendly, professional, and reliable, making the whole process completely stress free. I had my decking soft washed and the results were amazing, it genuinely looks like new and has been brought back to life. You can really tell they take pride in their work and pay attention to detail. I wouldn't hesitate to recommend them to anyone and will definitely be using their services again in the future!
Rianna Davies · Google
No fuss, just excellent - from start to finish. Friendly to deal with, clear communication all the way, came when they said they would, did an excellent job. Would use again without a doubt.
Tommy Smith · Google
Great service, really pleased with our garage roof. All the moss has gone and left nice and tidy. Great guys too. Thanks!
Marnie Smith · Google
Did a fantastic job on a garage roof clean/moss removal, looks good as new! friendly & professional highly recommend 👏🏼
Hattie Weller · Google
Really pleased with our driveway😊
pearl dennis · Google
They done an amazing job and great price
ryan stride · Google

Good to know

Roof Cleaning in Caterham: your questions answered

My roof is under trees. Should I clean the tiles or the gutters?

The gutters and valleys first, every time. A green tile is mostly cosmetic, while a blocked valley or gutter backs water up under the tile edges and is a genuine route into the building. On a roof under heavy tree cover, keeping the drainage clear regularly protects the property far more than a periodic tile clean does.

How often does a roof under trees need doing?

The tiles themselves can be done less often. Realistically it needs regular attention, not an occasional deep clean, because the leaves come down every year regardless. Keeping the valleys and gutters clear annually or thereabouts is usually worth more than a full moss clean every few years, and it is cheaper.

Does moss on a roof cause leaks?

Not usually on its own, though it contributes. The common route to a leak is moss and debris blocking valleys and gutters so water backs up under the tile edges, rather than moss on a tile face letting water through. That is why clearing the drainage matters more than how green the tiles look.

Can you reach a roof on a steep or awkward site?

Usually, and we assess it before quoting instead of turning up hopeful. Steep ground, retaining walls and limited standing room all affect what access we can put up and where. If a roof cannot be reached safely with the access available, we will say so rather than improvising something on the day.

Should I have the trees cut back instead?

If it is an option, it addresses the cause, not the symptom. Less overhang means less leaf fall into the valleys and gutters, more light onto the roof and a covering that dries out properly. Cleaning still gives you the immediate result, but reducing the cover is what changes how often you need it.

Roof Cleaning in Caterham, done properly

Free, no-obligation quotes across Surrey, Sussex and Kent. Send a few photos and we will do the rest.