Patio Cleaning in Banstead
Patio Cleaning in Banstead: dirt, algae and black spots lifted off paving and natural stone, with the method chosen to protect it. Banstead is reached from Horley, across this part of Surrey. The first step is a free, no-obligation quote.
- Paving, natural stone and slabbed patios
- Removal of built-up dirt, algae and black spots
- Method chosen to protect the surface
- Tidy finish, ready to use
Patio Cleaning for homes and businesses in Banstead
What is between your patio slabs matters more than most people expect, and patios turn up with all of it: kiln-dried sand, traditional mortar pointing, brush-in resin compounds and, on a fair few, nothing much at all any more. On any Banstead patio the joint decides how it gets cleaned and it decides what happens afterwards, so it is the first thing we look at.
Three joints, three completely different jobs
Sand joints wash out during cleaning, every time, and need refilling afterwards. Mortar pointing is fixed but brittle: sound mortar is fine, tired mortar comes out under pressure and needs repointing. Brush-in resin compounds sit somewhere in between and can be blown out in seconds by a close lance, after which the whole patio needs re-jointing, not a local repair.
One patio can have more than one of them, particularly where it has been extended or repaired over the years. We work to whichever is weakest across the whole area rather than switching setting halfway.
Weeds in the joints are a symptom, not the disease
Weeds growing between slabs are not coming up from underneath a properly laid patio. Seed lands on top, settles into an open or hollowed joint and roots in the organic debris that has collected there.
Pressure is not the answer to weeds, full joints are. That is why cleaning helps so much: it removes the seed bed. And it is why the joint filling afterwards is the part that decides whether they come back next spring.
How we work
- 1Free quote and stone identification
The single most important step. Indian sandstone, limestone, porcelain, Yorkstone, concrete slab and clay pavers all behave differently under a washer, and getting this wrong is what causes the damage you see on badly cleaned patios.
- 2Protect the borders and check the pointing
Furniture and pots moved, nearby planting protected, and a look at the pointing. Slurry-pointed joints and loose mortar will lift under pressure, so we find that first and tell you instead of discovering it halfway through.
- 3Set the pressure to the softest thing on the patio
We work to whatever is most delicate, not whatever is toughest. Soft sandstone gets a gentler pass than the concrete edging next to it, even though both are getting cleaned in the same visit.
- 4Treat black spot and lichen with chemistry, not force
Black spot lichen roots into the stone. You cannot blast it off without taking the surface with it, so it needs a treatment and time to work. How much will shift, and how much may need a second visit, gets said before the job starts.
- 5Rinse down, sweep and walk it with you
Everything rinsed off, the silt cleared, furniture back, and a walk round so you can see the result and hear what we found while we were in there.
Black spot lichen roots into the stone, so it needs a treatment and time rather than more pressure. How much is likely to shift can be judged on the slabs themselves.
Other services in Banstead
Patio Cleaning near Banstead
Patio Cleaning: questions these guides answer
Real results
Patio 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
Patio Cleaning in Banstead: your questions answered
Will cleaning wash the sand out from between my patio slabs?
Yes, on sand-jointed paving that is unavoidable, because the dirt sits in the top of the joint and lifting it lifts the sand. That is normal and expected, not a fault. What matters is that the joints get refilled afterwards, and we will agree that with you at quote stage so it is settled before we start.
Will pressure washing damage the mortar between my slabs?
Sound mortar is fine. Failing mortar is not, and washing will find it. Slurry pointing and tired or crumbling mortar can lift under a washer, so we check the pointing first and tell you what we see. If it is already going, cleaning reveals the problem rather than causing it, and repointing is the proper fix.
How do I stop weeds coming back between my paving?
Keep the joints full. Weeds do not push up through a properly laid patio, they seed on top and root in the debris sitting in open joints, so an empty or hollow joint is effectively a seed tray. Cleaning removes the seed bed and refilling the joints removes the place for the next lot to settle. More pressure does nothing for weeds.
Can you re-sand the joints after cleaning my patio?
Which yours needs is agreed before anything starts. Joint filling is part of the conversation at quote stage, not an assumption either way, since it depends on what your patio is jointed with. Sand joints need refilling after cleaning, resin-jointed patios need a compatible compound, and mortar joints need pointing rather than filling.
Do you clean patios, driveways and paths together?
Doing them in one visit is usually the sensible approach because the setup happens once. They are still quoted separately so you can see the cost of each and choose. In practice a clean patio next to an untouched path tends to look worse than either did before, so most people do them together.
Patio Cleaning in Banstead, done properly
Free, no-obligation quotes across Surrey, Sussex and Kent. Send a few photos and we will do the rest.