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Description

Compared to Siberian Larch, British grown Larch is typically warmer in appearance having a rich heartwood colour, it has a greater number of knots and perhaps more grain character.

Knots are brown and can be scattered and frequent, and they may loosen and weep resin for 12–18 months. It will colour down to a silver grey if it is not protected as soon as installation is complete with a good quality semi or fully translucent UV-radiation protective coating. It is a very strong and hard-wearing wood.

It is a very strong and hard-wearing wood and will colour down to a silver grey if it is not protected as soon as installation is complete with a good quality semi or fully translucent UV-radiation protective coating.

This species is only moderately durable and should be high pressure treated with NORclad Brunnea™ or NORclad Lite™ to give the species a 30 year warranty against rot and fungal decay out of ground contact (UC3)

Typical end uses:

Timber cladding.

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

UK/ Homegrown 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

Not required

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:

Pale red/ brown.

Edges:

Square or as profile.

Origin:

Extensively planted in many European Countries and the U.K.

Sustainability:

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

Density (12% moisture content):

550 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 or 4.8 m lengths.

Profiles:

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

Literature