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Iroko is well-known for its durability. As a durability class 1 timber, it is as tough as it gets and can withstand a lot of wear and tear both inside and outdoors. That being said, it does need a little maintenance every now and then, especially if it is used outdoors so that it will last for longer. From decking to external wood furniture, learn in this guide how to look after Iroko timber products.

Weathering and Colour Changes

In appearance, Iroko is incredibly similar to Teak – it is even known as African Teak, though it is not part of the same species. The wood is a rich, golden-brown with plenty of warmth, making it a popular choice for luxurious decking, cladding and exterior furniture.

If left untreated, though, Iroko timber, when used outside, will gradually weather and fade to a silvery-grey hue. While some people love the rustic aesthetic this gives, and it does not generally affect the timber’s durability, others prefer to keep that rich golden colour for longer. In this case, it is good to start maintenance by adding a UV stain to your Iroko timber.

Cleaning Iroko Timber

Regular cleaning is the foundation of good maintenance, even for a naturally durable timber species such as Iroko. Dirt, leaves and algae can build up on decking or outdoor furniture, making it slippery and less attractive, while also contributing to potential rot down the line. To prevent these issues, remove debris with a stiff, clean brush. You can also use warm water and a gentle soap, though it is essential to avoid any products that are too harsh and will strip the wood of its natural oils.

For Iroko decking, you can use a pressure washer occasionally for a thorough clean, though be sure to keep it on the lowest setting to avoid damaging your timber boards.

Protect Against Moisture

One of Iroko’s strengths is its natural resistance to rot and moisture, but prolonged exposure to standing water can still cause issues (to just about anything). Good design and installation are essential here: ensure the decking has adequate drainage and that exterior furniture is not left in areas where water pools.

Even with adequate installation, your timber may still benefit from the occasional application of a water-repellent oil or stain. This can extend its lifetime and keep it looking fresh for years to come.

Avoiding Stains

Outdoor furniture is particularly prone to spills and stains. Because Iroko is dense, it resists deep staining, but quick action helps. Wipe spills promptly and, if needed, sand the affected area lightly before re-oiling. For Iroko decking and cladding, any stubborn patches of algae or moss can be treated with a specialist timber cleaner.

Long Term Maintenance

Iroko outdoor furniture, decking, and even marine constructions, such as fenders, can last for decades with very little maintenance. The main issues to note are UV discolouration and ensuring that cleaning does not strip your timber of its natural oil. You should also inspect your timber regularly to spot any signs of issues (such as splintering timber or rot) before they become larger problems. To extend the lifespan of your Iroko wood, you can also use furniture covers and reapply finishes to further protect it from the elements.

Start an Order of Iroko Timber

As one of the toughest timber species out there, Iroko really does not need much maintenance. While all the tips included here can extend your timber’s lifespan, they are not essential, making Iroko one of the easiest timbers you can choose for outdoor constructions.

Looking for Iroko timber for your next project? As a TDCA certified supplier of sustainable tropical hardwoods, including Iroko, our team at EcoChoice are here to help.

Get in touch to start your order.

Iroko characteristics

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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!

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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

Prem Raja

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

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Stone Zone

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Average rating on Google Reviews

  • 6 years ago

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.

Tim Saunders

  • 6 years ago

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

Prem Raja

  • 9 years ago

Excellent service and outstanding product

Cindy Dicks

  • 3 years ago

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.

Janet Sycamore

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