Written by Mark Reid,
Trades Editor ·Verified 22 October 2026
Bristol is a hard city for exterior surfaces. It's hilly, damp and shaded in all the wrong places, so moss, lichen and algae take hold fast. Victorian and Edwardian terraces in Clifton, Redland, Southville and Bedminster have clay tile and slate roofs that need gentle treatment, while 1930s semis in Westbury-on-Trym, Henleaze and Downend usually come with block paving driveways that green up within a couple of winters. Newer estates around Bradley Stoke, Cribbs Causeway and Emersons Green tend to have K Rend and silicone render, porcelain patios and fresh decking, all of which show black streaks and algae on north-facing walls. The usual jobs here are block paving cleaning with re-sanding and sealing afterwards, patio cleaning on Indian sandstone, porcelain and concrete slabs, soft-wash roof cleaning with moss and lichen removal, render cleaning, gutter clearing, fascia and soffit cleaning, decking restoration and brick or stone cleaning. Roofs are soft washed with a biocide rather than pressure washed, because a jet can strip granules, lift tiles and force water under the laps. The biocide kills the growth at the root, so it stays away for years rather than weeks.
The businesses on this page are drawn from third-party business listings and ranked by public review rating and review count, with a small lift for those that show a working website and phone number. We read each business's homepage to confirm that exterior cleaning work is what they primarily offer, which keeps unrelated trades off the page. Listings flagged as permanently closed are removed automatically. Where you see a Trust Verified badge, that business has additionally passed our full verification, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history and registered company information. Our How We Verify page sets out the full list. For any business without that badge, we haven't independently verified those things, so you'll need to do those checks yourself before booking.
Get two or three quotes, and make sure each one is for the same job. Ask what method they'll use on each surface: low-pressure rotary cleaning for block paving, soft wash for roofs and render, gentle treatment for porcelain and sandstone. Ask whether re-sanding and sealing is included in the price or charged separately, as it often is. Request proof of public liability insurance, and ask for the certificate rather than taking their word for it. Roof work at height means scaffolding or proper ladder access, so ask how they'll do it safely. Check whether they use a biocide on roofs and what happens to run-off near ponds, drains and plants. Look for relevant trade accreditation where it exists, and read recent online reviews for photos of finished work. Get the price and scope in writing, and don't pay in full upfront.
How We Select & Rate The Best Exterior Cleaning in Bristol
Our ranking is driven by public review rating and review count from third-party business listings, with a small lift for businesses that have a working website and phone number. We read each business's homepage to confirm that exterior cleaning is what they primarily offer, and permanently closed listings are removed automatically. Businesses marked Trust Verified have additionally passed our full verification covering qualifications, insurance, trading history, customer review history and registered company information. Our How We Verify page lists every check. Other businesses on this page have not been independently verified by us, and inclusion is not an endorsement. Always do your own checks before hiring.
Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. Every other listing is ranked on rating and review count from third-party business listings. How we rank & verify →
Driveway and patio cleaning, along with pressure washing of decking and exterior walls, form the core of the work at Bristol Pressure Washing. The business serves properties across Bristol, removing moss, algae and ground-in dirt from hard surfaces. It holds a 5 out of 5 rating from 162 Google reviews, a sign of consistent results on routine domestic jobs.
Bristol Blast Away cleans driveways, patios and decking using pressure washing, restoring surfaces that have darkened with moss, algae and ingrained dirt. The exterior cleaning business works across Bristol, covering the south of the city around BS14. Its Google rating stands at 5 from 100 reviews, a sizeable sample for a local service.
CIS External Building Cleaning describes itself as an exterior cleaning specialist, with a service list centred on the upkeep of building surfaces from the outside. Its work covers the washing and maintenance of facades, roofs and other external fabric, and it has traded under the CIS banner since 1976, according to its website. The Bristol firm holds a Google rating of 4.8 from 102 reviews.
Gutter clearing and cleaning is the core of the work at Giraffe Property Maintenance, a Bristol exterior cleaning business that also covers fascias and soffits, roofs and other external surfaces. Jobs are carried out from the ground where possible, which keeps disruption to a minimum for households and small commercial premises. Its Google rating stands at 5 from 37 reviews, a record that reflects consistent work across the city and surrounding area.
JL Exterior Cleaning describes itself as an exterior cleaning specialist working in Bristol, with a listed scope that covers the outside surfaces of a property rather than a single trade. The business presents its work as the removal of dirt, algae and weathering from areas such as driveways, patios and external walls. Its Google rating stands at 5 from 30 reviews.
Patios, driveways and paths that have turned green or black with algae and weathering are the core of the work at Onyx Surface Cleaning & Restoration in Bristol. The business cleans hard exterior surfaces to bring back their original appearance, which often avoids the cost of replacing them. A five-star Google rating from 27 reviews suggests customers are satisfied with the results.
JPM Exterior Cleaning Services describes its work through the surfaces it treats, with patio, driveway and gutter cleaning named directly in its web address. The Bristol business sets out a scope built around the outside of a property, covering hard landscaping and drainage rather than interior or general maintenance work. Its Google rating stands at 5 from 7 reviews.
A perfect 5 out of 5 Google rating across seven reviews gives OneFifty a small but consistent record to point to. The Bristol firm works in exterior cleaning, covering the outdoor surfaces of homes and commercial premises that weather, moss and general grime tend to mark over time. Customers in the BS5 area and the surrounding city can contact the business through its website.
Southwest Exterior Cleans specialises in removing algae, moss and weathering from patios, driveways and other hard surfaces around Bristol. The business works on exterior surfaces rather than interiors, which keeps its service focused on restoring the look of paving and outdoor areas. It holds a 5 out of 5 rating on Google from five reviews.
Families across Bristol call on Bright and Beaming to restore the outdoor surfaces around their homes. The business is an exterior cleaning service, covering the kind of work that keeps driveways, patios, and external walls free of algae, moss, and weathering. It suits households that want routine upkeep done by a local operator, whether for a single terrace or a larger family property.
In south Bristol, Gb Cleaning carries out exterior cleaning for homes and small commercial properties. The work covers the outside surfaces that collect moss, algae and general grime, from driveways and patios to cladding and roofs. Based in the BS14 area, the business serves local customers who want weathered external surfaces restored without replacing them.
Transparency notice: Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. All other listings are ranked by a combined score drawn from ratings and review counts published on third-party business listings, plus basic completeness signals such as a working website and phone. A Trust Verified badge means we have independently checked that business's documents; businesses without it have not been independently verified by us. How we verify →
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It depends on the surface and the size. A typical block paving driveway of 30 to 50 square metres costs around £250 to £500 to clean, with re-sanding adding roughly £50 to £100 and sealing another £5 to £10 per square metre. Patio cleaning usually runs £4 to £8 per square metre, so a standard garden patio is £150 to £350. Soft-wash roof cleaning on a three-bed semi is commonly £400 to £900 depending on access and roof pitch. Render cleaning costs around £300 to £800 for a whole house, gutter clearing £60 to £150, and fascia and soffit cleaning £80 to £200. Getting two or three quotes is normal and worth doing.
Why is soft washing better than pressure washing for roofs and render?
A pressure washer can strip the surface from concrete and clay tiles, loosen pointing, push water under the laps and into the loft, and blast the finish off render. Soft washing applies a biocide at low pressure and lets it kill the moss, lichen and algae, which are then rinsed off gently or left to wash away over a few weeks. It's kinder to K Rend, silicone render and painted finishes, and the clean lasts longer because the growth is killed rather than just blasted off. Expect a roof or wall to look slightly patchy for a few weeks while the treatment works.
Does block paving need re-sanding and sealing after cleaning?
Yes, in most cases. Cleaning removes the old jointing sand along with the dirt and weeds, so the joints need to be refilled with kiln-dried or polymeric sand to lock the blocks together and keep weeds out. Sealing is optional but worthwhile on driveways that get oil drips or sit under trees, as it protects the colour and makes future cleans easier. Sealers come in matt, satin and wet-look finishes, so ask which one is being used. Allow 24 to 48 hours before driving on a sealed surface.
Which cleaning method suits which patio surface?
Indian sandstone is porous and can be damaged by aggressive pressure, so it's best cleaned with a controlled rotary surface cleaner and then sealed if you want to slow future staining. Porcelain is dense and non-porous, so it cleans easily but can be scratched by the wrong equipment, and it needs care with grout and jointing compound. Concrete slabs tolerate stronger cleaning, though they can lose their top layer if overdone. Ask any cleaner which method they'll use on your particular surface, and ask to see a small test patch if you're unsure.
How often should I have my roof, patio, gutters and render cleaned?
Gutters should be cleared once or twice a year, more often if you have overhanging trees, as in Redland or Sneyd Park. Patios and block paving typically need cleaning every one to two years, and decking annually in shaded gardens. Render on a north-facing wall may need attention every three to five years. A soft-washed roof can stay clean for five years or more, but check it after wet winters. If green growth returns quickly, ask your cleaner whether the biocide was applied properly.
How do I choose between exterior cleaning businesses?
Ask for a copy of their public liability insurance certificate and check it's current and covers the work you need. Look for relevant trade accreditation and ask what qualifications they hold for working at height. Read recent online reviews and look for photos of before and after results on similar properties to yours. Ask what chemicals they use, how they manage run-off, and what guarantee they give. Compare at least two or three written quotes line by line. Be wary of anyone who wants full payment upfront or who recommends pressure washing a roof.
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