Green growth lifted, timber cleaned and re-oiled. Safe underfoot again, and protected going into winter.
Fully Insured
Public liability cover
Ashford based
Covering all of Kent
Free surveys
Fixed written quotes
Hot water steam
Not harsh jet washing


Algae and mould grow in the grain and in the gaps between boards, particularly on north-facing decks or anything under tree cover. Once it’s established, a wet morning turns the whole thing into a slip hazard, and the moisture it holds is what rots the boards from the surface down.
We clean and treat decking right across Kent, from our base in Ashford.
Timber is soft, and high pressure raises the grain. Once that happens the surface is rougher, it holds more water, and the green growth comes back faster than it did before. It also strips whatever oil or stain was on there.
We use hot water and low pressure, which lifts the growth out of the grain without tearing at the timber. The gaps between boards get done as well, since that’s where most of the moisture sits.
Composite decking is different again. It doesn’t need oiling and it marks differently, so we treat it as its own job.




Bare timber absorbs water, and absorbing water is what causes the greening, the splitting and eventually the rot. Cleaning takes the growth off but leaves the surface open, so without oil the same thing starts again from the moment we drive away.
Once the deck is clean and properly dry, oiling restores the colour and seals the surface so water runs off rather than soaking in. It’s the difference between a deck that needs doing again next spring and one that holds up for a couple of seasons.
Timing is the part that catches people out. The timber has to be dry all the way through before oil goes on, not just dry on the surface, so we normally clean and then come back to oil rather than doing both in one visit. We’ll tell you when we’re there roughly how long that’ll be, since it depends on the weather and how sheltered the deck is.
Composite decking is different again. It doesn’t need oiling and it marks more easily than timber, so we treat it as its own job.
Clean and oil in late spring and you get the whole summer out of the deck, with the timber sealed before the wet weather returns.
It also means the deck is dry enough to take the oil, which is the part people get caught out by. Leave it until October and the timber often never dries out properly between showers, so it goes into winter bare and you’re back to square one by March.
An autumn clean on its own is still worth doing where a deck sits under trees, mostly to get the leaf litter off before it stains and mulches down over winter.


Ashford, Maidstone, Medway, Canterbury, Tunbridge Wells, Tonbridge, Folkestone, Dartford, Gravesend, Sevenoaks and the surrounding villages.
Kent External Cleaning is here to help you bring out the best in your home or business property.
We offer free, zero-obligation consultations to all our customers and we’re open from 9am to 6pm, Monday to Sunday every week.
Do you have any questions or are you ready to restore your property? Contact us today so we can get started. Please give us a call on our mobile number: 07895 212 800 or on our freephone number: 0800 1182 793.
Alternatively, send us an email at [email protected] and one of the team will be happy to help you get started.