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Marine timber fenders work hard. Day in, day out, they absorb impacts from boats and vessels while coping with constant moisture, drying cycles, tidal movement, saltwater exposure and biological decay. That’s why choosing the right timber for marine fendering is so important to harbours, ports, piers and marinas.

In UK waters, conditions can vary significantly from sheltered rivers and canals to exposed coastal berths. Both hardwood and softwood timber fenders are used, depending on loading requirements, lifespan expectations and budget.

Greenheart

Greenheart has a long history of use in high-durability marine projects. This leading hardwood is popularly used to construct piers and seawalls, and has been for centuries. High-density, impact resistant and robust, Greenheart absorbs collisions with ease to provide resilient protection for both docks and boats. Its inherent oils and unique cellular structure also make it naturally resistant to marine borers, fungi and decay.

Douglas Fir

Douglas Fir is a softwood commonly used in the construction of frames, joists and load-bearing beams because of its strength and reliability. Its good impact resistance also means it performs well in marine environments. Following pressure treatment, Douglas Fir timber can be used as floating fenders or waler systems where durability is less important than cost.

Ekki

Our premium Ekki fenders are the pride of Oxen Cove in Devon and many other settings. The extremely dense, hard, durable and shock-resistant nature of Ekki makes it a reliable choice. The species maintains its integrity despite repeated wetting cycles.

Key features of Ekki include:

  • Extreme density, hardness, and shock resistance.
  • Superior durability for the harshest conditions.
  • Maintains integrity despite repeated wetting cycles.
  • Can withstand high impact and heavy loads without the risk of splitting or splintering.

Larch

Larch is a dense softwood, offering significantly greater strength than common softwoods like Pine and Spruce. At EcoChoice, we have supplied Larch for various applications, including the construction of:

  • Decking
  • Cladding
  • Fencing
  • Gates
  • Exterior furniture

When used in marine settings, Larch is only suitable for medium-duty fendering above the waterline, and only after the necessary treatment. Please note, we supply FSC and PEFC-certified British and European Larch. We do not source and supply Siberian Larch, which is classed as conflict timber since the Russia-Ukraine war.

Opepe

Popular across UK construction projects, Opepe is a sturdy hardwood species which we source from sustainable forests in West Africa. Its durability and stability make it suitable for marine constructions as well as class 3 projects such as decking street furniture and cladding. Piles, walers, rubbing strips, lock gates and fenders made from Opepe are particularly smooth yet also resistant to decay and waterlogging.

Oak

Suitable for lighter-duty marine environments, oak fenders perform best above the waterline. Its tannin content offers a natural durability against fungal decay, moisture cycling and weathering in freshwater or brackish water, although it can stain concrete surfaces, so be careful. With this in mind, it can be a practical choice for quays, jetties, lock gates and river or canal fenders, but only with moderate loads and impacts from small-to-medium sized vessels.

However, it is crucial to note that Oak is less resistant to marine borers (such as shipworm and gribble) in saltwater environments compared to tropical hardwoods like Ekki and Greenheart. It is also susceptible to wear in busy commercial berths, making the denser tropical species superior for heavy-duty, high-traffic settings.

Timber for Marine Fendering

We stock a selection of sustainable, certified hardwoods and softwoods for your fendering project. Choosing the right marine timber fenders is a critical investment. Get in touch with our timber experts today to find a species that meets your requirements and budget.

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Choosing the right fenders

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

Prem Raja

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

5

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  • 2 weeks ago

Good quality, great service, fast delivery!

Marinella Li

  • 9 years ago

Excellent service and outstanding product

Cindy Dicks

  • 9 years ago

Experts in Timber, Nationwide delivery

Joe Middleton

  • 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

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