How to Avoid Water Stains on Your Decking

From city centres to your own garden, decking is everywhere. Versatile, sustainable and durable, wood is a brilliant natural building material that holds up beautifully over time. However, certain things are very common, like stains. No matter how you use your decking, it’s very likely to accumulate a library of marks over time. One of the most frequent is water stains. Fortunately, there are plenty of ways you can remove them, keeping your decking looking its best for years to come.

How Can You Prevent Water Stains?

Water stains are preventable if you act early – or if you design a gentle slope in your structure so that the water can roll down and not accumulate. By sealing your decking before any water has the chance to touch it, you can also prevent these marks from ever appearing. Choose oil or water-based sealer for your decking to keep those stains away. If you are not sure how to seal your wood, get in touch with our team and we’ll be happy to help you.

It’s easier to learn how to prevent water stains than it is to remove them. But if you forget to seal your deck regularly enough and stains do appear, there are ways to get rid of them.

Is There a Best Time of Year to Remove Water Stains?

The best time to remove water marks is when it’s dry. Most people work on their decking during the summer, which is a good time to undertake such projects. Most methods for removing stains need plenty of drying time. So during the dry, summer weather, it’s likely that your project will be a lot easier.

How to Remove Water Stains From Decking

Many water stains are simply the build-up of dirt left behind from the water rather than the water itself. To get rid of them:

  1. Use a pressure washer lightly to spray the deck and apply a cleaning solution.
  2. Scrub the deck in the affected areas and wash off the cleaning solution using the pressure washer, opting for a wide spray setting.
  3. Never use a fine needle spray as this can etch lines in your wood.

Can you Remove Milky-White Water Stains?

Water stains that are milky-white are all too common on decking. If you have any light coloured stains, you can try removing them with your everyday electric iron (please be careful). Empty the water from the iron’s tank (ensuring it is completely dry) then turn it on to a setting with no steam. Lay a clean white cloth over the marked area and pass the iron over it. Lift the cloth every few goes to see if the stain is lifting. This should help to clear the stain quickly, leaving you with decking that looks as good as new! Here’s a video to help you.

Can You Remove Water Stains by Sanding?

If the stain hasn’t penetrated too deeply into the wood, you may be able to sand it out. This should be a last resort for marks you just can’t move, as it can damage the wood. But, with careful attention and the right advice, you may be able to get rid of the toughest stains without too much fuss.

Start with fine-grit sandpaper and move in the direction of the grain. You are less likely to damage the wood if you can remove the stain with a finer grit. Test the paper on one area of the mark to see if it will remove it, and increase your grit until you see visible results. Don’t press too hard on the wood, and sweep off the dust as you go to watch your progress.

Replace Old Decking With Sustainable Timber

Some timber is simply too old to be refreshed. If yours is covered in marks, stains or rot, it may simply be time to replace it. At EcoChoice, we have plenty of durable timber species available for decking that are easy to maintain. Take a look at our species to learn more or get in touch with our team today.

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Avoiding water stains on decking

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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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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.

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

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