British Larch Decking

• British larch
• Larix decidua
• Legal and well managed forests in England and Wales
• Supplied by Vastern Timber (sales@vastern.co.uk)
• Grade : Grade A BS1186-3 1990 Class 2 / EN942:2007 J30 Grade B BS1186-3 1990 Class 3 / EN942:2007 J50
• Finished thickness of 21mm
• Overall finished widths 95mm / 140mm
• Random lengths 1.8mt – 3.6mt+, allowing small % down to 1.5mt
• Available in various profiles
• Moisture content of 16 – 20%
• Durability EN350-2 Moderately Durable. Class 3
• Supplied uncoated. No treatment required.

Appearance
British larch ranges in colour from pinky-brown in the heartwood, to creamy-white in the sap band. Depending on the grade, there will be some or many dark brown knots and occasional resin pockets along the length of the board.

Weathering
British larch weathers relatively slowly, often taking two years to reach a silver-grey patina. Larch is quite consistent and is not reactive, and as such, will weather relatively evenly. North facing locations may weather to a darker grey than those facing South.

Desired service life
Frequently wet 15 yrs.

Movement class
Large

Resistance to impact
High

Working properties
Good workability. Takes fixings satisfactorily although can be prone to splitting.

Density
570 – 650 Kg / m3

Extractives
British larch contains resin rather than oil or tannin.

VDEC1 (140mm) / VDEC2 (95mm / 140mm) / VDEC3 (95mm)

While the utmost care has been taken to provide accurate information, Vastern Timber shall not be held responsible for any consequences arising from any errors or omissions on this website nor for any damages resulting from the use of the information.