European Larch
Botanical Name
Overview
Western Red Cedar (Thuja plicata)
This species is an ideal material for use as exterior or interior cladding and is available with PEFC & CSA certification.
Western Red Cedar is naturally resistant to decay and insect attack. It simply seasons if left uncoated to an attractive silver grey appearance over a period of approximately eighteen months in areas with low air pollution. Cedar offers superior acoustic qualities too, helping to reduce noise or confine it to specific areas. It is also an excellent material for thermal insulation in summer keeping the building cool and in winter preventing the heat from escaping.
Available Grades:-
Grade Tab – 2 Clear & Better
Grade Character – Sound tight knots half‚ in diameter on face and three quarters‚ on reverse. Soft knots half size of sound knots, splits no longer than width of board.
External and internal cladding, decking and saunas
Certification
PEFC
CSA
Origin
North West, predominantly Canada
Physical Structure
Soft, rather brittle and light in weight
Durability
Class 2 durability, confirming to BS 8417
Moisture Content
30% + for green, 12 – 18% K.D
Working Qualities
Machines and takes fixings well, however stainless or galvanised nails should be used to avoid corrosion
Storage Advice
Kiln dried material should be kept undercover, green can be kept outside
Wastage Allowance
10 – 15%
Stability
Very low shrinkage factor, very resistant to warping, twisting and checking
