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British Larch Plank Co2 larch Co2 Larch is situated in rural Somerset (close to Taunton) with easy access to the M5 and A303. With many year’s experience and a proud history of producing quality products our aim is to help you along your chosen route.

As a contemporary cladding manufacturer, we aim to provide our customers with the best kiln dried durable timber for their cladding, fencing, flooring and decking projects. We supply a range of cladding suited to modern, rustic or traditional installations in open and closed profiles.

British Larch is a high-density timber with excellent wear and impact resistance rated BS EN 350 class 4 moderately durability (see below).

British Larch General Information

British Larch cladding is a sustainable and attractive choice for exterior cladding in residential and commercial buildings. Timberclad® British Larch is available in various profiles and sizes to suit different design requirements and is FSC Forest Stewardship Council approved timber.

Suitable for a traditional or contemporary look, British Larch cladding can provide a durable and attractive solution.

British Larch Common Uses

Cladding, flooring, decking and fencing commercially or for your home.

British Larch is widely used in the construction of timber frames, trusses and A-frames, and outdoor structures. Heavily used in house building when certain strengths need to be attained.

Suitable for many situations where you might use Oak but at a considerable lower price. Larch like Douglas Fir is a good all-rounder. Good for profile cladding (externally and internally), decking, flooring, joinery, furniture work.

British Larch Appearance

It's worth noting home grown British Larch traditionally has more live knots than imported larch. The knots adds to its character.

British Larch is fairly straight-grained with strong and clear annual growth rings. The timber has a warm, pale orangey colour, sometimes going into a pale pinkish red.

The heartwood is pale reddish-brown to brick-red in colour, sharply distinct from the narrow, lighter coloured sapwood. A straight grain timber with a fine consistent texture.

Timber is a natural product therefore the products we supply has variations in markings, shape, colour, size, texture. The Seller neither guarantees nor warrants that such variations will not occur, or that the Goods will conform to any sample either in markings, size, shape, colour and general quality.

Can be left untreated and will "silver/grey" unless a UV oil is applied which will delay the greying process. british-larch-front-2

British Larch Specification

Wood Type:- Softwood

Durability:- Class 3 Moderately see below. You should get a service life of at least 15 years, if well installed and maintained twice that can be expected. Slightly Durable Class 4 as per BS 8417

Stability: heartwood minimal movement

Mechanical Strength:- Generally tough and hard with good strength properties

Texture:- Fine

Origin:- Great Britain

Sustainability:- Like all our timber FSC from well managed forests

Density dry:- 530 to 590 t Kg/m3

Thermal Conductivity Rating (U Value) : 0.13 W/m2 K


When selecting your timber type for your project it is worth taking in to consideration BS EN 350 timber durability class.

Durability is the ability of a species to resist decay either naturally or through preservatives. The Class is based on the ability of the heartwood (inner part of the tree) to resist fungal decay. The sapwood (the living outermost portion of the tree)is considered not durable and should not be used for external projects without preservative.

BS EN 350 has 5 classes of durability they are:-

Class 1 to 3 can be left as untreated timber, a natural ageing process will accrue e.g. Larch will turn a grey colour. Class 4 and 5 will need to be treated with preservatives.

For further information see