Siberian Larch

• Durability - Class 3/4, moderately durable

• Moisture - Small

• Density (mean.Kg/m3) - 550

• Texture - Fine

• Price - Low

• Colour(s) - Beige to Pale Yellow

• Working Qualities - Medium

• Fasterners* - Use stainless steel or galvanised nails

• Spread of Flame Rating# - Class D

Western Red Cedar

• Durability - Class 2, durable

• Moisture - Small

• Density (mean.Kg/m3) - 390

• Texture - Coarse

• Price - High

• Colour(s) - Pale Yellow to Reddish Brown

• Working Qualities - Excellent

• Fasterners* - Use stainless steel or galvanised nails

• Spread of Flame Rating# - Class D

Thermowood

• Durability - Class 2, durable

• Moisture - Small

• Density (mean.Kg/m3) - 490

• Texture - Fine

• Price - Low

• Colour(s) - Dark Brown

• Working Qualities - Good

• Fasterners* - Use stainless steel or galvanised nails

• Spread of Flame Rating# - Class D

Accoya

• Durability - Class 1, very durable

• Moisture - Very small

• Density (mean.Kg/m3) - 510

• Texture - Fine

• Price - High

• Colour(s) - Beige to Pale Yellow

• Working Qualities - Good

• Fasterners* - Use stainless steel

• Spread of Flame Rating# - Not tested to Euroclass standards, but equivalent to other softwood in ASTME84 spread of flame

* : Source - TRADA External Timber Brochure

# : Spread of Flame Rating will vary depending on treatment applied