Siberian Larch Cladding Channel Profile

Siberian Larch Cladding Channel Profile

Made from high-quality slow-grown premium Siberian Larch. This profile offers you impeccable weather protection and a striking uniformed look with its definitive shadow lines. The visually appealing shadow lines emphasize the length of your building and give you the contemporary, uniformed appearance.

  • Produced from slow grown premium Siberian Larch Timber and carefully kiln dried to approx. 16-18% (+/- 2%)
  • Can be treated to achieve fire classification: Euroclass B-s1,d0
  • Cladding sections can be fitted horizontal and vertical
  • Smooth Finish, 14mm visible shadow gap
  • Natural colour – not oiled
Price excl. vat ( VAT added on checkout ) m2 price l/m price
20 x 120mm £49.49 £5.94

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Siberian larch cladding Channel profile for a contemporary, unified look that you are looking for

The channel profile of the Siberian larch cladding can be installed horizontally or vertically. The boards have a 45 degree beveled edge that creates a recess where the boards meet to create bold shadow lines that accentuate either the height or width of the facade.

The bevels on the top and bottom of the boards accentuate each board by creating a subtle V-shadow line along the seams. Depending on your style, they can be adjusted either horizontally or vertically. If you plan to mount them horizontally, it is recommended that you install the boards face up.

The channel profile of the Siberian larch cladding is stable and tight. It’s incredibly easy to install with no visible nails. The bevel, where two boards meet, creates a small gap along the joint, making it the perfect choice for wood paneling for a contemporary look.

Siberian larch is valued for its tough, waterproof, and durable properties. Siberian larch cladding is a great choice for a variety of projects, from large construction to small home improvement. Siberian larch cladding was specified for residential and commercial applications – including schools, shops, and sports facilities.

Siberian larch wood is resistant to rot when it comes into contact with the ground. The Channel profile is suitable for fence projects. Over time, under external conditions, natural Siberian larch soils acquire a gray shade without losing their durability. However, if the natural color of the wood is to be retained, this can be achieved on site with a UV protective cover oil. This higher density wood is not easily damaged, making it ideal for high traffic areas or applications where there is a risk of physical damage such as bumps or scratches.

Siberian Larch Cladding Channel Profile

Other Siberian Larch Cladding Profiles

Beauty, durability and stability — Siberian Larch is a premier softwood when it comes to exterior cladding. Horizontal and vertical, our range covers many different profiles: Rainscreen, Smooth, Tongue and Grove, Channel, shadow gap and more coming soon.
Technical specifications
Wood type: Siberian larch (Larix sibirica)
Cladding treatment: None
Density: In dry state approx. 628 kg m³
Lifespan: Proven life expectancy of 50+ years
Quality class: A+, A, AB (A and B mixed)
Siberian larch AB Grade and qaulity description Grade and quality description (PDF)
Humidity: Dried up to approx 16-18% (+/- 2%)
Purpose: Outdoor use
Other uses: Decking, Cladding, fencing, joinery, flooring
Dimensions (mm): 20 x 95 / 120 / 145 mm
Origin: Sustainable forests of Northern Russia (Siberia)
Available length: From 2 to 4 m
Appearance: The wood come in a warm mix of colours, from light yellow brown through to golden browns with a strong grain, similar to pine. Depending on the grading, the boards may contain a few dark knots.
Weathering: When the boards weather, the color changes to beautifully consistent silver gray, which is highly desirable in many cladding projects.
Insect attack: Resistant
Treatability class: Resistant
Movement class: High (A 145mm board can vary 3-4mm over the year.)
Impact resistance: High
Scratches and abrasion: Resistant
Fire treatment: Possible by impregnation. Can be treated to achieve fire classification: Euroclass B- s1,d0
Working characteristics: Good workability. Receives fixings satisfactorily.
Extracts: Siberian larch is more likely to contain resin than oil or tannin. The resin is fixed by firing and does not tend to bleed out. Larch is fairly consistent and non-reactive and, as such, becomes relatively evenly weatherproof.
When to fix: Ideally autumn / winter months.
How to fix: Face fixation with stainless steel ring thigh nails. Pre-drilling recommended.
Siberian larch properties

Siberian Larch wood is naturally durable (Class 3 according to BS EN 350-2) – and therefore ideal for outdoor purposes – due to a combination of factors:

  • The chemical composition of the wood creates a high resistance to rot and decay, which makes Siberian Larch one of the hardest and most durable softwoods.
  • High density – this means that it is more difficult for decaying organisms to penetrate the wood.
  • Long lifespan – lifespan of approx. 50-100 years with correct detailing and general outdoor exposure. Better durability properties can only be achieved with Accoya wood.

The natural durability of Siberian Larch means that no treatment of the wood is required and any coatings applied are for aesthetic purposes only.


Due to the high percentage of heartwood (75-90%) and the minimal proportion of sapwood, Siberian Larch is an extremely dense timber, which is classified by BS EN 350-2 as approximately 630 kg / m3 with a moisture content of 18%. As such, it is not easily damaged, making it ideal for highly exposed elevations, or applications where there is a likelihood of damage such as bumps or scratches.


The extreme continental climate in Siberia (Russia) produces a high proportion of late wood, which provides enhanced dimensional stability and enables a smoother machine finish.

In addition, our Siberian Larch is kiln-dried to around 16-18% (+/- 2%), the optimal moisture content for outdoor use. This moisture level is retained until delivery on site, so your Siberian Larch wood can be installed immediately. The benefit of kiln drying Siberian Larch, as opposed to air drying it, is that the timber dries uniformly and therefore achieves optimum stability.

Improved dimensional stability performance can be achieved by using narrower widths, for example 120mm and 95mm.


Our Siberian larch decking, cladding and sawn timber are available in various lengths, from 2m up to 4m. The standard board dimension is approx. 150mm, as this is traditionally the most commonly produced width. However, we also offer a range of other widths: 95mm, 120mm and 145mm. The narrower board widths offer a number of advantages, including a wider choice of design options and improved dimensional stability. As an added benefit, narrower board widths are generally rated well beyond their specification.

Cladding is supplied per linear metre based on random stock lengths at the time of order picking. Other sizes may be available on request.

Note: The board widths can change due to changes in moisture content. The boards are kiln-dried to approx. 16 – 18% before processing. Cladding width can slightly vary between production and installation on site (+/- 2mm). Siberian Larch cladding is shipped in certain sizes from our warehouse, but a margin of error should be allowed for when making cladding calculations, due to the natural expansion and contraction of the wood.

Siberian larch timber quick tips

Siberian larch timber is blessed with many natural properties which makes it low-maintenance. The high level of resin in the wood provides natural protection against rot and decay. However, there are a few things you can do to treat and care for the Siberian larch to increase its longevity.

Prepare the wood
Sort your lengths

Sort your lengths. Make sure you’ve set them all up. We recommend ordering 10% more to cover waste material.

Know your tools

Siberian larch is very hard and dense wood. Use professional equipment for best results.

Use stainless steel

We recommend using only high quality stainless steel screws to avoid corrosion and stains on the wood.


OSMO wood protection offers effective multiple protection against UV rays and harsh environmental conditions.

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