Siberian Larch Cladding
Siberian Larch is becoming a very popular cladding timber due to its natural durability and attractive light appearance.
Whilst not offering the same durability as cedar, Siberian Larch does have a price advantage of about £22.00 per square meter, comparing to cedar which is about £36.00 per square meter
Siberian Larch quality varies greatly but we have achieved a reliable supply from the Lake Baikal region of Siberia where the best Larch logs are to be found.
All goods are FSC Certified and of a consistent grade.
Extra care is needed when using Siberian Larch, Benchmark Timber have the experience to ensure the quality of your project.
Sapwood can be a problem with Larch as it is not durable - We take care when milling to ensure all sapwood is on the rear of the cladding board.
Larch cladding can move and shrink – when we mill we ensure all tongues are at least 15mm to make sure the tongue stays in the groove once the board has moved.We take care to buy from sawmills
who store in such a way to minimise fungal staining.
Please also consider Western red cedar which is the premium cladding timber offering greater natural durability and dimensional stability. Thermowood may also be worth considering which offers similar properties to cedar at a lower cost. Thermowood is can be quite knotty.
The Tree and Forest
Larch is a dense and hard. The Siberian Larch grows as the name suggests in central Siberia where there are about 600 million acres of Forest half of which is Larch. Stocks of standing timber are increasing which means this is a sustainable resource.
Physical properties of Kiln Dried Siberian Larch
Heartwood is variable in colour ranging from light straw, pinkish brown to brown.
Kiln dried : 800kg/m3
Larch cladding may split during nailing so pre drilling recommended.
We supply a mix of grades 1 to 111 which is equivalent to U/S grade.
This it a good quality grade but has a greater number of knots than our Cedar.
Larch may also have the occasional sap pocket
Siberian Larch must be used with care to allow for movement & therefore minimise the risk of splitting.
Larch heartwood is naturally durable when left untreated
High natural resistance to rot & fungus
50 year expected durability if untreated
Suitable for architectural timber cladding and decking.
Siberian Larch cladding will slowly weather to a grey colour. If this is not desired then treat with a Alkyd resin based stain.