Roof Cleaning in Leatherhead
Roof Cleaning in Leatherhead: moss and organic growth taken off the tiles by soft washing or pressure washing, whichever suits the roof. Leatherhead is served from Horley, alongside Dorking, Epsom and Ashtead. 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 for homes and businesses in Leatherhead
Flat and near-flat roofs on extensions, garages and dormers need roof cleaning done in a completely different way from a pitched tiled roof. If you have one at your Leatherhead property, that difference is the whole job. Felt, GRP fibreglass, EPDM rubber and single-ply membranes are waterproof surfaces, not lapped coverings, and the whole point is that the membrane is continuous. Anything that risks that continuity is off the table.
Membranes are cleaned gently or not at all
A flat roof keeps water out because the membrane is unbroken. Pressure washing a felt roof lifts the mineral surface and can cut a seam open. GRP scratches and its top coat is thin. EPDM is tough in normal use and can still be damaged at a seam by a close jet.
So flat roofs get low pressure, a suitable cleaner and hand work, or they get left. Cleaning a flat roof is worth doing to clear standing debris and moss, not to make it look brand new.
Standing water and debris are the real issue
Flat roofs are never truly flat, they are laid to a slight fall towards an outlet. When leaves and moss build up they block that outlet, the fall stops working and you get ponding, which is the main way flat roofs fail early.
A blocked outlet is not. Clearing the debris and making sure the outlet flows is therefore the useful part of the job. Green algae staining across a felt roof is mostly cosmetic.
How we work
- 1Ground 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.
- 2Agree 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.
- 3Remove 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.
- 4Clear 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.
- 5Biocide 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 Leatherhead
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Roof Cleaning: questions these guides answer
Real results
Roof Cleaning: before & after
Genuine before and after results from recent jobs across Surrey, Sussex and Kent.
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!
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.
Great service, really pleased with our garage roof. All the moss has gone and left nice and tidy. Great guys too. Thanks!
Did a fantastic job on a garage roof clean/moss removal, looks good as new! friendly & professional highly recommend 👏🏼
Really pleased with our driveway😊
They done an amazing job and great price
Good to know
Roof Cleaning in Leatherhead: your questions answered
Can you clean a flat roof?
Yes, gently. Felt, GRP fibreglass, EPDM rubber and single-ply membranes are continuous waterproof surfaces rather than lapped coverings, so they are cleaned with low pressure, a suitable product and hand work. Pressure washing a flat roof can lift the mineral surface off felt or open a seam, which turns a cosmetic job into a leak.
Water sits on my flat roof after rain. Is that a problem?
It usually means the outlet or the fall is not working, and it is worth dealing with. Flat roofs are laid to a slight fall towards an outlet, and when leaves and moss block that outlet the water has nowhere to go. Ponding is one of the main reasons flat roofs fail early, so clearing the debris and getting the outlet flowing is the useful part of the job.
Is the green staining on my felt roof damaging it?
Mostly it is cosmetic. Algae growing across a felt or membrane roof looks poor and does not generally threaten the waterproofing on its own. What does matter is moss and leaf debris building up in thickness, holding water and blocking the outlet. We would rather clear that than chase the staining with anything aggressive.
Do you clean garage and extension roofs as well as the main roof?
They are often the parts that most need it. Garage and extension roofs tend to be flat or shallow-pitched, shaded by the main house, and slow to drain, which is exactly the combination moss likes. Doing them alongside the main roof means one visit and one set of access.
Will you tell me if my flat roof is past cleaning?
Yes. Where a membrane is blistered, split, lifting at a seam or has lost its surface, cleaning will not help and can make it worse, and what it needs is a roofer. Anything visible gets pointed out, and the repair left to the right trade instead of washing a roof that is already failing.
Roof Cleaning in Leatherhead, done properly
Free, no-obligation quotes across Surrey, Sussex and Kent. Send a few photos and we will do the rest.