Spotlight on species – Cedar (Canadian vs UK)

The Cedar tree is one of the most well known in the world. Often described as majestic, there are two types of cedar trees – true cedar trees, which belong to the Cedrus genus, and false cedars, which belong to the family Cupressaceae, otherwise known as cypress.

What Is The Botanical Name For Cedar?

Both the Canadian and UK cedars have the botanical species name of Thuja Plicata. They are both Western Red Cedars which is a member of the cypress family.

Where Are Cedar Trees Found?

Canadian cedar can be found on the Pacific coast of British Columbia in Canada, whereas the UK counterpart in England and Wales.

What Does The Cedar Tree Look Like?

Cedars are large and majestic. They can reach enormous heights of up to 70m. The Western red cedar is pyramidal in shape and has a broad trunk. The foliage is a glossy green, with whitish markings underneath, and the leaves sprouting from the twigs are fairly small and scale-like.

Both male and female flowers grow on the same tree with the male flowering cones being small and inconspicuous. The female flowers are small and reddish-purple in colour.

The bark of a Western red cedar is ridged and a dark reddish brown in colour.

What Does Cedar Timber Look Like?

The timber of a Canadian cedar has a varied colour palette – it ranges from a dark reddish brown to a light amber colour. It also has occasional pink highlights which will silver with age if left untreated.

British cedar timber has more character with knots and grain unlike Canadian timber.

See differences here: https://ecochoice.co.uk/cedar-cladding

What Varieties Should You Be Aware Of?

There are many varieties of Cedar. Those belonging to the Cedrus genus are known as true Cedars, while others, such as the famous Western Red Cedar as false, since it belongs to the Cypress family Cupressaceae.

Other true Cedar trees include the Deodar Cedar, the Atlas Cedar and Northern White Cedar among others.

What Properties Does Cedar Timber Have?

Cedar is very durable – thriving in damp climates which means it is able to withstand most conditions. It is also porous and naturally insect-repellent.

Canadian cedar is regarded highly for its resistance to decay and its lightweight. British cedar is also fairly repellent to insects and has a good workability.

What Are The Main Uses of Cedar Timber?

Cedar is used for many applications such as fencing and decking and it is most commonly used for cladding. Both the Canadian cedar and UK cedar are typically used, with those based in the UK tending to opt for their native cedar since it’s much cheaper, despite the lower durability rating.

UK cedar trees are planted for timber and shelter whereas Canadian cedar was often used for making domestic items.

Did you know?

In the UK, cedar was planted in the grounds of nearly every stately home and mansion from the 1740s onwards; however it is not commonly planted today.

Images: Alexander Chlum / Shutterstock.com, Brian Clifford / Shutterstock.com, yoshi0511 / Shutterstock.com

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View from below Cedar tree

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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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