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Siberian Larch Cladding

Siberian larch is a hard and naturally durable softwood that offers a cheaper alternative to cedar. Siberian larch cladding is hardwearing but it is unstable and prone to movement.


Traditional / contemporary


Halflap and splayed profiles





Siberian Larch Cladding Features

Siberian larch trees grow very slowly and consequently the larch wood is extremely dense and strong when compared to other softwoods such as spruce and cedar. The high resin content found in Siberian larch makes it one of the most durable softwoods in the world.
Siberian larch, which is a straw colour, should not be confused with the European larch growing in Britain, which is pink in colour.
Siberian larch cladding is generally available in two grades, which in the trade, are confusingly named ‘Unsorted’ and ‘Fourths’ (or sometimes ‘Sawfalling’). For ease, we describe our stocks as either Grade A or Grade B. Grade A allows for occasional small knots, although many boards will be clear of defects. Grade B allows for frequent and larger knots.
For a comparison between British and Siberian larch watch our video.

Call us to discuss your project


Siberian larch cladding from Vastern Timber

  • Siberian larch
  • Larix siberica
  • Legal and certified sources in Siberia
  • Supplied by Vastern Timber (
  • Grade : Grade A BS1186-3 1990 Class 2 / EN942:2007 J30 Grade B BS1186-3 1990 Class 3 / EN942:2007 J50
  • Finished thickness of 20mm
  • Overall finished widths 70mm / 95mm / 145mm
  • Random lengths 1.8mt – 4.0mt+, allowing small % down to 1.5mt
  • Available in various profiles (Not T&G)
  • Moisture content of 16 – 20%
  • Durability EN350-2 Moderately Durable. Class 3
  • Supplied uncoated. No treatment required.


Siberian larch is a golden yellow colour with a strong grain pattern, similar to pine. Depending on the grade, the boards may include occasional, or many, sound knots.

Siberian larch cladding weathers relatively slowly, often taking two years to reach a silver-grey patina. Larch is quite consistent and is not reactive, and as such, will weather relatively evenly. Northerly elevations may weather to a darker grey than those facing South. In damp areas or near trees Siberian larch does sometimes grow a fine black mould on the surface.

Desired service life
Occasionally wet 30 yrs. Frequently wet 15 yrs.

Movement class

Resistance to impact

Working properties
Good workability. Takes fixings satisfactorily although can be prone to splitting.

570 – 650 Kg / Cm3

Siberian larch contains resin rather than oil or tannin. The resin is fixed by kilning and does not tend to bleed. The resin is not reactive.


How to fix
Pre-drill and hand nail with stainless steel nails through the face. Do not attempt to secret nail through the tongue. We do not recommend first fix nail guns because the nails are unsightly but the method does work.

** Be sure to leave an expansion gap between boards**

For more information, visit the resource centre

Batten type
Treated softwood. 35mm thick x 50mm wide

Batten spacing
400 – 600mm 

Nail type
Stainless steel only. 50mm ring shank nails for hand nailing. Trim head stainless steel screws are also suitable. 

When to fix
Ideally autumn and winter months.

Resistance to fixing


Timber cladding is machined to order in the profile of your choice. View our full range of cladding profiles

We recommend the following profiles for Siberian larch.


While the utmost care has been taken to provide accurate information, Vastern Timber shall not be held responsible for any consequences arising from any errors or omissions on this website nor for any damages resulting from the use of the information.

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        We can send up to three cladding samples to show characteristics and grade of the wood. We cannot supply specific cladding profiles.

        Please be aware that samples are only intended to give an approximate indication of how the cladding will look when delivered. All timber cladding will include natural variations in colour and quality.

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