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We have put together a concise guide to enable you to compare cladding features in order to ensure that you select the appropriate species for your project. To find out more about each product, simply click on the product name at the top of the table.

  Scotlarch® SILA A/B® and SILA A+ VG SILA  Architect Select® WRC Accoya® wood
Species Scottish Larch Siberian Larch  Siberian Larch Western Red Cedar Radiata Pine 
Origin Scotland Russia Russia North America New Zealand/Chile
Density* (Kg/m3 at 18% moisture content unless otherwise stated)


Medium density






Low density

592 (at 8%)

Medium density

Durability Class* (1 is 'Very Durable' > 5 = 'Not Durable' 3 3 3 2 1
Stability Good Good Very good Very good Excellent
Presence of Knots Many Some Some Very few Very few
Suitability for Vacuum Coating Moderate (sawn-face recommended) Good Good Very good Excellent (opaque recommended)
Fire-Retardant Coating Possible Yes Yes Yes Yes No
Environmental Certification FSC® FSC® FSC® PEFC FSC® & PEFC
Modified Timber No No No No Yes
Lengths (m) Up to 4.8m Up to 6.0m Up to 5.1m Up to 5.7m Up to 4.8m
Width (mm) 75 - 150 75 - 225 92 100 or 150 100 - 200
Starting Price (per m² excluding VAT) **
£19 £32 £46 £POA £POA

** Please note that these prices change on a regular basis, due to the fluctuating prices of timber, so the figures above should be used as a guide only

Dualchas Architects
Russwood provide a consistent good service and product for architects which gives them confidence when specifying. This ranges from advice on detailing and product selection through to after sales advice to customers. Architects jobs are made easier when both contractor and suppliers work as a team to provide great buildings – Russwood are very much team players and are an important component in the increasing amount and quality of timber-clad buildings being built in Scotland.

Neil Stephen, Dualchas Architects