The Lifecycle of Timber Cladding

When choosing materials for a building project, durability is always going to be a factor. Whether it’s a deck in your back garden or cladding on a public building, you will want the materials you choose to stand the test of time. Timber is a fantastic choice when it comes to durability, and the lifecycle of timber is fairly long. If installed and maintained correctly, it can last for dozens of years! To look more into its lifecycle and which type of timber is right for you, read on.

The Natural Durability of Timber

Timber is a pretty good choice when it comes to natural durability. However, the lifecycle of your wooden surface will vary depending on the type and species you choose. Softwood timber, which is sourced from coniferous trees such as Spruce and Pine, is generally less durable. Hardwood timber from broad-leaved trees, such as ash and oak, is typically more resistant to wear and tear, making it a better choice for projects that will see higher traffic or need tougher wood, like a public pier.

There is also the option of impregnated softwood timber, which is a brilliant choice if you would like the durability of hardwood timber but are on a budget. Impregnated softwoods are treated so that their resistance to fungi, insects and fire is increased, helping to extend the life of your wood.

Installation is Key to Durability

Apart from which timber you choose, one of the biggest factors to extend durability is correct installation. Beautiful and long-lasting timber has a few requirements when you fit it to allow for the natural properties of wood. For example, wood naturally “breathes”, meaning that it shrinks and swells depending on the relative humidity. So you may need to leave a gap when you install your boards (for decking, for example, around 0.25-0.125 inch or 6-3mm is recommended). You also need to consider drainage, with many flat boards requiring a gentle slope to help water runoff.

Natural Weathering or Protection?

If you don’t treat your timber, it will undergo natural weathering. This isn’t necessarily a bad thing as long as it is installed properly, and you will benefit from a beautiful natural grey colour which only comes with time. However if you stain or paint your wood, you can extend its lifecycle and reduce the maintenance needed in its final service years. Staining can prevent issues such as bugs and water, and reduce the amount your wood moves, making it more resistant to fungal attacks.

Different Types of Timber Age Differently

Different species have different natural durability classes. For example, Cumaru is very durable with a rating of 1, Balau is durable with a rating of 2 and Garapa is moderately durable with a rating of 3. Having an understanding of the characteristics of different species is a must to make the right choice for your project.

Choose the Right Timber For Your Project

When selecting your timber, you need to think not just of how the wood looks now, but also how it will wear in the future. If all of this sounds a little complicated, don’t worry! At EcoChoice we are timber experts and will be more than happy to match you with the right species depending on your needs. Simply get in touch with us today and let us make this process simple.

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Lifecycle of timber cladding

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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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