Latin name: Larix sibirica
Also known as: Siberian larch, Russian larch
Slightly durable, Moderately durable
Reported to be small
Density (mean, Kg/m³):
590 (Ranging from 570 to 650)
Cladding, Joinery – Exterior, Flooring, Decking, we also supply preweathered old look larch and factory painted larch.We are one of the largest manufacturers of factory painted claddings. We supply from stock machined tongue and groove, shiplap, half lap, planed all round, dressed all round, planed square in various sizes e.g Ex 25x150mm. This can be for merchant or DIY stock or for cladding or fencing project requirement. We also supply from stock Siberian larch decking, including shou sugi ban charred burnt cladding.
Yellow brown (Golden brown), Light brown, Reddish brown (Pale)
Listed in the IUCN Red List of Threatened Species as LR – Lower Risk (least concern). Not listed in CITES. Believed available from well-managed sources. We supply FSC Certified Siberian Larch.
The native distribution for L. sibirica extends across Siberia to Mongolia and northern China. In Siberia it is extracted from ‘natural forest’ and most of this timber is extemely slow grown material. In the eastern part of its range it hybridises with L.gmelinii and is known as Larix x czekanowskii. L.sibirica is also grown in plantations in Austria, Norway and Finland yielding more quickly grown material. It has been introduced into Canada and northern USA.
This is a medium sized deciduous, coniferous tree ranging in size from 20m to 40m tall with a diameter of 1m or slightly more. In favourable situations a long, clean, cylindrical bole for two-thirds of its length can be achieved.
The heartwood is pale reddish-brown to brick-red in colour, sharply defined from the narrow, lighter-coloured sapwood. It is a very resinous wood, with clearly marked annual rings. It has a straight grain, a fine, uniform texture and is rather heavy, weighing 590 kg/m³ when dried, it is likely that plantation grown L.sibirica and that grown in more southerly Europe is of lower density. Its heartwood is listed as moderately durable, and its narrow sapwood means a high proportion of heartwood can be recovered for use.
Difficult to dry due to its high resin content. Therefore it should be dried slowly to prevent checking and other drying defects.
Likely to be similar to European larch which is about 50% harder than Scots pine and slightly stronger in bending and toughness. The strength values for slow grown L. sibirica material are likely to be slightly higher than for faster grown plantation sourced material.
Similar to European larch in that it saws, machines and finishes well but it tends to split on nailing and therefore drilling is recommended particularly at board ends.