Siberian Larch – (Larix Sibirica)
Siberian Larch is one of the best coniferous woods. High durability and extra resistant against rot and fungus, this makes it ideal for outside joinery, cladding and decking.
Siberian Larch is a slow growing wood, a high density timber with minimum sapwood. The timber has a pleasing appearance with a warm mix of colours from golden brown, to yellow and orange, many hues and shades in the heartwood.
Specification for Bryceland Timber Siberian Larch UNS Grade 1-111.
Timber is graded to BS1186-3 Kiln Dried 19 % Avg. M.C. This is regarded as being the most suitable moisture content for external timber cladding. Tight live knot structure, centre free, one face sap free. Lengths vary 2.4m-6.0m
Please note UNS 1-111 Grade Siberian Larch is the best grade imported into the UK. We only supply genuine graded Siberian Larch ex 25mm thick boards, using boards which are centre free.
Extensive sorting takes place on the basis of criteria such as knot size, knot frequency, wane, sapwood and heartwood. At Bryceland Timber we offer Larch from some of the best mills in Central and Eastern Siberia. The wood is sorted into UNS, fourth and fifth.
The attribution of these qualities is determined by aesthetics and constructive application.
Siberian Larch can be used without finishing because of its colour, texture and durability. This displays the timbers natural beauty in all its splendour. Siberian Larch will fade to silver-grey through time.
Additional protection of the surface can be achieved with the use of water based stains, preservatives and paint. Using stains that have a pigment will protect the wood from discolouration which comes from exposure to UV light. Modern stains and finishes can achieve 4-6 years protection, depending on orientation and area location. Bryceland Timber will be happy to discuss and advise on suitable applications for your specific project.
Technical Information
| Wood Type: | Softwood |
|---|---|
| Environmental: | Sourced from well managed forests with either FSC or PEFC Certification. Third party audited by BM Trada, Forest Products Chain of Custody Certification, certificate number BMT-COC-0032 |
| The Tree: | This is a medium sized tree ranging in size from 20m to 40m in height with a diameter ranging from 0.6m to slightly over 1.0m. In favourable situations a long clean cylindrical bole for two-thirds of its length can be achieved. |
| The Timber: | The heartwood is golden brown to yellow and orange in colour, sharply defined from the narrow, lighter coloured sapwood. It is a resinous wood, with clearly marked annual rings. It has straight grain, a fine, uniform texture and is rather heavy weighing from 590kg/m³ to 690kg/m³ when dried. |
| Drying: | Difficult to dry due to its high resin content. Therefore it should be dried slowly to prevent checking and other drying defects. |
| Strength: | Likely to be similar to European Larch which is about 50 times harder than Scots Pine and slightly stronger in bending and toughness. |
| Working Qualities: | Similar to European Larch in that it saws, machines and finishes well but it tends to split on nailing and therefore drilling or piloting is recommended particularly at board ends. |
| Durability: | Slightly durable Moderately durable |
| Treatability: | Extremely difficult |
| Moisture Movement: | Reported to be small |
| Density: | Varying from 590 to 690kg/m³ |
| Texture: | Fine |
| Uses: | Cladding, Exterior Joinery, Flooring, Decking |
| Availability: | Readily available from Bryceland Total Timber Solutions Ltd Please contact us for further information on pricing. |
| Sawn Board Sizes: | 25 x 100 / 125 / 150 / 175 / 200 32 x 125 / 150 38 x 100 / 125 / 150 / 175 50 x 100 / 125 / 150 / 175 / 200 Larger sections are available, please contact us for details. |