About Co2 Cedar®

Co2 Cedar<sup>®</sup> about
Co2 Cedar® is an Canadian Western Red Cedar (Thuja Plicata). A versatile fungi resistant soft wood with a Class 2 durability rating (see below), has very few knots, and produces a clean contemporary finish. Co2 Cedar® has long been the favourite as a superb contemporary Cladding timber.

We use Grade 2 and better which is the best quality Cedar to come from Canada.

Canadian Western Red Cedar has a wide range of colours ranging from a light pink to a deep red ending on dark chocolate brown. It has less knots than the British Western Red Cedar and planes to a good finish. Sourced from FSC/PEFC certified plantations, and we aim to keep our carbon footprint to a minimum and encourage sustainable practices. For example, we use our off cuts in our commercial wood burning stove to heat our workshop in winter and provide heat for our kiln drying process.

It can be left to naturally turn to a "silver/grey", stained or painted. Please see our accessories for a range of products.


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. most timbers will turn a grey colour. Class 4 and 5 will need to be treated with preservatives.

For further information see www.greenspec.co.uk/building-design/cladding-durability-quality

Quality Grades According to BS 1186-3

BS 1186-3 has 3 grades applicable to external timber cladding, mostly concerned about the size and frequency of knots::-

For further information see www.greenspec.co.uk/building-design/cladding-durability-quality