Imported Western Red Cedar is commercially grown in Canada and the Coastal Pacific North West of the USA. It is very slowly grown with a close fine straight grain and is predominantly a red/brown colour. It is an extremely stable timber with a very low shrinkage factor and it is also resistant to warping and twisting, and it is naturally resistant to decay and insect attack. When exposed to rain and sunlight, Western Red Cedar will go an attractive silver grey colour. Its low density makes Western Red Cedar an excellent material for thermal insulation. Rated as durable, the heart wood will give a service life in excess of 60 years out of ground contact.