Which Timber Should Be Used to Construct Fenders?

Fenders are a staple in the world of marine construction. Used to protect vessels, walls, pipelines and many other installations, they help to extend the life of these structures and reduce the chance of damage to both pier walls and ships. If you are looking into installing fenders but aren’t sure what species of timber is the best to use, we have got you covered. Take a look at our top picks and keep your structures safe.

What to Look For in Timber for Fenders

There are a few key features you should look for when choosing timber for fenders. The first is durability, which can vary a lot from species to species. For this reason, it’s usually better to choose a FSC certified tropical hardwood timber, which is naturally more hardwearing than softwoods. This is especially true if the timber will be used in water; a less durable variety will be more susceptible to rot, even when treated.

Oak Timber

Oak is one of the most common choices when it comes to durable timber. Reasonably durable and long-lasting, it can withstand some wear without splitting or wearing away. It is also readily available making it easy to be replaced, unlike other typical fender species.

Ekki Timber

Ekki is a coarse hardwood timber well-known for its maritime resistance. It’s highly resistant to attack from marine organisms such as gribble and also very dense, making it perfect for fenders. It’s available in the widest possible range of sizes since the original tree can be very wide. However, it is not easy to work using hand tools, so machines should be used.

Greenheart

Greenheart is sourced from Guyana and together with Ekki, is the main tropical timber chosen for fenders. That is because it comes in very long lengths, standard sizes (300×300 is usually in stock) and is known to be incredibly durable – so your timber fender is likely to stick around for many years to come.

Douglas Fir Timber

Douglas Fir is actually one of the few softwoods we would recommend for fenders. This is because, unlike many other kinds of wood from coniferous trees, it is relatively durable, especially when treated. It experiences little shrinking, which is fantastic for fenders, is strong and naturally resistant to both fungal and insect infestations. When exposed to the elements, it proves to be hardy, making it perfect for many fender applications.

Why Should You Choose Sustainable Timber?

When working in civil and marine environments, being conscious of your impact on the environment is essential. As the world becomes increasingly aware of the sustainability issues facing us, companies must do their best to reduce their negative impact on the planet. By opting for sustainable timber sourced from responsibly managed forests, you can easily make an eco-friendly, ethical choice for your project and boost your eco status.

Sustainable Timber at EcoChoice

At EcoChoice, we stock a wide range of sustainable, independently certified hardwood that is ideal for timber fenders. If the options above don’t match your criteria, feel free to get in touch with us today and we will help you find a species that does.

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Which timber for fenders?

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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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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.

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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.

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

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