How to clean decking – is a pressure washer safe?

Your once beautiful decking is now looking sad, tired and just a little bit grubby. You want to breathe new life into your garden haven, but where do you start and what should you use?

As decking is exposed to the elements all year round, it can often end up looking more than a little distressed.

The best way to keep it looking at its best is to carefully maintain it all year around and if you can’t manage that then to at least give it a very thorough cleaning and treatment once a year before the summer months.

Integrate it into your spring cleaning routine when the weather turns warmer and the sun shines for a little bit longer to make sure your deck is summer ready when the endless days of summer finally roll around.

Cleaning your deck

1. You should start by removing all pots, chairs, furniture, and plants from the area before giving your deck a very thorough sweep with a broom to remove all of the leaves, twigs, and branches that might have fallen onto the decking over the winter months. Don’t forget to also remove any moss or mulch that might have formed in the grooves and gaps of the decking too.

2. You can then move on to a more thorough deep cleaning of your deck area. A pressure washer is perfectly safe to use on decking, but if you do not have one (or cannot borrow one easily) then a normal garden hose set on to its most powerful setting will work very well too. This will help to remove all of the loose grime that you have dislodged with your sweeping and the first stage of your cleaning. However, if you are using a pressure washer, do make sure that you are not using the machine too closely to the wood as this will damage the surface of the wood making it hard to treat and damaging the integrity of the wood. Spray in between the boards to remove any remaining dirt or grime from the deck.

3. The last step of the cleaning process is to deep clean the wood with a deck cleaning solution or even just a mixture of washing up liquid and water. Scrub the deck with a stiff bristled brush to thoroughly remove all remaining moss and grime from the wood. Allow the deck to dry thoroughly before moving on to the next step.

4. With a concentrated disinfectant treatment spray the deck thoroughly to protect against moulds and algaes forming in the future.

5. Finally, finish your deck with whatever product you want to use for your deck, whether it is a paint, an oil, a stain or a varnish. This will reseal your deck, making it at once a tranquil place to relax and enjoy the summer months as well as protecting it against the elements and from algae, lichen, moss, and fungi.

EcoChoice are passionate about promoting sustainable timber for use in all construction areas from decking to marine industries.

Using FSC certified timbers for your decking will mean that you will have years and years of fun and enjoyment out of your deck with complete peace of mind about the wood’s ethical origins.

Call us on 0345 638 1340 for a quote.

Photo: bubutu / Shutterstock.com

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How to clean your deck

Ask Joe! Expert industry advice

Unsure which timer is best for your project?

Our timber experts have years of experience and will be able to match the perfect species to your project, as well as provide a quote for sustainable timber at highly competitive prices.

Frequently asked questions

Do you supply timber for domestic uses?

Yes, we supply timber for domestic applications as well as commercial and public constructions. From garden decking to shed cladding, we will be happy to supply smaller deliveries for home use.

Is your timber FSC-certified?

Yes, all timber we supply is FSC or PEFC certified and sourced from independently verified responsibly managed forests. If we can’t find your request in FSC/PEFC certified timber we’ll suggest an alternative that is certified or clearly note that the offer is minimum EUTR.

Where does EcoChoice deliver to?

EcoChoice delivers to construction sites, warehouses and homes across the UK, as long as there’s access and unloading for our trucks.

What are the best timber species for exterior use?

There are many different timber species suitable for exterior use and which is the best for your project depends on your requirements. In general, though, we recommend EkkiGreenheartOpepe and Oak for heavier civil/marine uses. For intermediary external use such as decking, where the timber needs to be both strong and durable but not on the same level as civil engineering (bridgespiling, etc) we usually supply CumaruIpe, Jatoba, and Balau. And for the lighter exterior use where the timber is non-structural such as cladding, we deliver CedarLarchThermowood and others.

Which timber is the most durable?

Durability Class 1 timbers are the most durable. This of course depends on the use (hazard) class they’ll be in service for. For direct ground and water contact such as sleepers, fenders, marine piling, etc, Ekki and Greenheart are known to be the most durable timbers available. For decking and cladding where there’s no direct ground contact (use class 3) there’s a much wider range of timbers such Larch, Cedar, Thermo modified Pine or Ash and others.

What’s the best timber for internal cladding?

Internal cladding, where your timber is not in ground and not exposed to the elements can be classed as either use-class 1 or 2 – in which case most timbers will meet this durability criteria. That is not to say they’ll be the best, since internal environments have lower humidity (moisture) levels than outside. So in these cases, it’s best to go for a kiln-dried timber cladding board as these are more stable and delivered already in lower MC (moisture content) than the usual fresh sawn timbers sent to external applications. A word of caution – as timber reacts to variations in moisture, it’s best to avoid cladding any areas inside your bathroom.

How can I make decking less slippery?

The first thing is to ensure your deck boards are kept clean from leaves and other debris which will, over time, cover the surface and make it more slippery. Grooved boards can be used to improve grip if installed and used perpendicular to traffic, so especially useful in narrow passages and footbridges. Lastly, you can add our Grip-Choice strips: these are a mix of epoxy with aggregates that add gripping ridges to your deck area. Gripchoice is an easy way to make decking less slippery and safer, especially over large areas or where there’s high traffic. We can pre-install Grip-Choice strips for your decking before delivery or ship the strips separately to add to your existing deck’s grooves as a retro-fit solution.

What wood machining services do you offer?

We can offer planing, sawing, drilling and profiling of rough-sawn wood to any profile you require: from handrails to large port fenders.

Can you supply pre-drilled timber?

Yes, we will be happy to provide pre-drilled timber which is tailored to your needs for quick installation, thus saving you valuable time on site.

What cladding profiles do you supply?

We provide a wide range of cladding profiles, including tongue and groove, featheredge and shiplap. You can check the standard profiles here – but we can also match or custom make profiles to suit your specific needs.

Does timber change colour?

Yes, timber is well-known for changing colour over time. Some species can darken quickly right after installation, and like most untreated wood will eventually weather to a beautiful silver-grey. Interior timber is less likely to change colour (depending on conditions), and timber can be stained, painted or treated with UV-resistant oils to reduce colour change.

Do I need to treat exterior timber?

Some timbers such as Oak and Ekki, can withstand the strains of exterior use without any treatment. However, to extend the lifespan and maintain the aesthetic of your wood, we do recommend treating your timber with stains and oils. Pre-treated timber, such as ThermoWood and OrganoWood, are low-maintenance options which are more durable, but can have their life service extended by applying a clean and stain maintenance schedule.

Do I need to treat interior timber?

Depends on what area the timber is being used. For floor joists and timber rafters, it is common to see timber treated, or least very well kiln-dried. Other uses such as flooring may benefit from varnishing while internal timber cladding for decorative purposes shouldn’t require any treatment other than if you want to change its colour with different types of stains or oils.

Where are you based?

We’re based in Cambridge, UK, and coordinate multiple sawmills all over the world to manufacture your order. We then organise delivery with a range of hauliers so that your orders gets to your site on time.

What are the usual decking sizes?

Timber decking is usually 21x140mm or similar. For heavier applications where there’s more load and traffic, we deliver 35 or 45mm thick boards (such as Hastings Pier). Narrower boards are also possible: 95-90mm is a standard width – but we can manufacture whatever size you require.

What are the usual cladding sizes?

Typical cladding section sizes are 18×95 and 18x145mm although we can always custom make a section to suit your project’s design requirements. That includes waney edge boards in Oak or Chestnut as well as extra wide 195mm boards.

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Good quality, great service, fast delivery!

5

Marinella Li

Always helpful! One of our valued TDCA DeckMark and CladMark accredited supplier members which means their quality procedures are routinely audited and stand up to scrutiny giving you extra peace of mind.

5

Janet Sycamore

Having needed the supply of cladding, decking boards and other specified timbers through out the year Eco choice have been very helpful in sourcing the specified timbers and quantities required at a very competitive price.

5

Tim Saunders

Great quality, service and price. A pleasure to deal with. I would highly recommend Eco Choice.

5

Emma Hurrell

Fantastic company- Mike and the team are the best in the business- worked with them for many years.

5

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Always reliable and quality products, easy to deal with company.

5

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  • 9 years ago

Great service, quality products and very easy to deal with. Thank you.

Malcolm Coury

  • 4 weeks ago

Good quality, great service, fast delivery!

Marinella Li

  • 6 years ago

Fantastic company- Mike and the team are the best in the business- worked with them for many years.

Prem Raja

  • 6 years ago

Always reliable and quality products, easy to deal with company.

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