Grades, specifications and documentation.
Everything specifiers, builders and manufacturers need to confirm Siberian larch is right for the project — grading, specifications, installation and maintenance guidance.
Timber grades
Siberian larch is graded on density, grain tightness and knot allowance. We supply premium, tightly graded stock suited to exposed architectural and commercial applications — with grading documentation available on request.
Technical specifications
Density (650–700 kg/m³), moisture content, dimensional tolerances and durability class for every profile we supply, so specifiers and builders can confirm suitability before ordering.
Installation guides
Fixing patterns, fastener recommendations, cavity and ventilation requirements, and expansion allowances for cladding, decking, screening and batten installations.
Maintenance guides
Guidance on natural weathering to silver-grey versus oiled maintenance schedules, cleaning recommendations and re-coating intervals to keep larch performing over its service life.
Downloads
Spec sheets, grading documentation and CAD/technical drawings for architects and specifiers. Get in touch and we will send the current documentation set for your project.
Need a spec sheet for a project?
Send your project details and we’ll come back with the technical documentation you need.