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Description

Timber cladding species ideal for many end uses from external joinery and cladding applications, areas of potential high impact damage such as schools, shops to boat planking.

Siberian Larch is a moderately durable species, a slow grown high density softwood with a colour that ranges from a light straw yellow to a gold/ brown in the heartwood area.

It is one of the hardest and strongest commercial softwoods, with only Pitch Pine generally stronger.

Siberian larch has excellent machining properties, if it is not protected upon installation the timber will naturally weather down to a silver grey appearance.

The species is classified as moderately durable, therefore if required the we can provide additional treatment for external use (UC3); with NORclad Brunnea™ or NORclad Lite™.

Typical end uses:

Joinery and cladding.

Grades:

  • FSC Certified, sustainably sourced timber.
  • Imported from Russia.
  • All timber is sourced and machined to CE Quality Grading Requirements.
  • Kiln dried to 14-20% moisture content.
  • Typically 4.0 m lengths.

- Siberian Larch A:

Maximum live knot diameter: 25 mm as per grading rules I-III (unsorted) GOST 26002-83.

- Siberian Larch B:

Maximum live knot diameter: 40 mm as per grading rules I-IV (sawfalling) GOST 26002-83.

Standards:

Quality of timber (Exposed Surfaces): To EN 14915 – NORclad Timber Cladding is produced in accordance with factory production control for selection, grading, machining and preservative treatment of solid wood cladding.

General information
Specification data
Product Reference

Siberian Larch Timber Cladding

Profile

NWBB1

Board and batten, 25 x 75/150 mm, 165 mm cover width.

NWC1

PTG open V, 25 x 150 mm, 125 mm cover width.

NWC2

PTG open square, 25 x 150 mm, 125 mm cover width.

NWC3

PTG open round, 25 x 150 mm, 125 mm cover width.

NWCC1

Chamfered cladding, 25 x 150 mm, 132 mm cover width.

NWFE2

Feather edge, 32 x 150 mm, 125 mm cover width.

NWS1

Shiplap, 25 x 150 mm, 130 mm cover width.

NWSN1

PTG open V, 25 x 100 mm, 72 mm cover width.

NWSN2

PTG open square, 25 x 100 mm, 72 mm cover width.

NWSN3

PTG open round, 25 x 100 mm, 72 mm cover width.

Corner trims

Not required

NWA1

75 x 75 mm.

NWA2

50 x 50 mm.

NWA3

63 x 63 mm.

NWA4

50 x 50 mm.

High pressure treatment

NORclad Brunnea™

If sapwood present in the species.

NORclad Lite™

If sapwood present in the species.

Standard product features

Wood type:

Softwood.

Thickness:

20 mm.

Colour:

Varies from pale yellow to orange to golden brown.

Edges:

Square or as profile.

Origin:

Russia.

Sustainability:

Sourced from well managed forests, FSC certified available on request.

Density (12% moisture content):

590–650 kg/m³.

Dimensional stability:

It has a tendency to distort when wet or not dried, but once dry is generally stable.

Recommend fixings:

Only top quality stainless steel fixings should be used to avoid corrosion of fixings and blue staining of the profile.

Product Options

Size:

Typically 3.6, 4.0, and 5.1m lengths. Other lengths available to meet specifications where required.

Profiles:

Bespoke profiles, PSE boards etc. can all be machined on request.

Literature