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Scotlarch® - Timber Cladding

Name: Scotlarch® - Timber Cladding
Brand: Russwood Ltd
SKU: nrWbEAntMmnwKLMzGsrdMY

Verified by manufacturer 23 days ago

Board on board (BOB) Profile - Vertical

Russwood Ltd

Third party certifications:

Certificate of constancy of performance
Certificate type
EPD
Certificate type
DoP
Certificate type
UK Conformity Assessed (UKCA)
Certificate type

Scottish Larch timber cladding.

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Application

Suitable for use as external timber cladding.

Description

A locally sourced timber which provides a durable, natural, and cost-effective cladding solution.

Supplied using selected heartwood of Scottish Larch, boards can encompass a warm mix of colours; from pale orange/ brown through to reddish brown shades. In ideal conditions, Scotlarch® will weather to a muted shade of silver/grey which is desirable in many cladding projects. There are frequent knots in the boards, which demonstrate the natural origins of the product and give it a characterful look.

The product is a naturally durable timber and, for external cladding purposes, is classed as “moderately durable” (Class 3 according to BS EN 350-2). This is due to the tannins in the wood which create a resistance to decay. With correct detailing (e.g. no sapwood on working faces) and appropriate fixings, it should have a lifespan potential of at least 50 years.

Suitable for factory coating in SiOO:X, a breakthrough silicon technology which provides a weathered appearance at an accelerated rate.

Features and benefits:

Durability Class 3 as per BS EN 350-2.
Sapwood free on working faces.
Some resin pockets may be present.
UKCA to EN 14915 marked.
FSC-certified

General information

Color	Orange Yellow Pink
Finish	Brushed Sawn Smooth
Material	Timber
Shape	Rectangle
Length	Bespoke Guidance for specification option: Up to 4800 mm.
Width	66 mm 73 mm 140 mm 150 mm
Height	25 mm

Uniclass	Ss_25_20_08_95 Weatherboarding systemsPrimary
CAWS	H21/15 Horizontal timber weatherboarding H21/10 Vertical timber weatherboarding H21/111 Horizontal timber weatherboarding H21/115 Vertical timber weatherboarding

Specification data - Weatherboarding systems

Breather membrane	-
Material	Supplied by others. Guidance for specification option: For profiles with gaps, manufacturer recommends a UV resistant, black unmarked membrane be specified. Consult manufacturer for further details.
Fasteners	Supplied by others.
Cladding support	-
Counter battens	RWB002 - Thermopine 45 x 20 mm. Guidance for specification option: Required. Manufacturer's standard battening system.
Battens	RWB003 - Thermopine 41/ 46 x 42 mm. Guidance for specification option: Required. Manufacturer's standard battening system.
Fasteners	KompeFix® flexible ventilation strips and GoFix® MS II 5.0 x 120 mm screws with SC 7® coating for load-bearing connections. F-BohrFix® 3.2 x 40 mm stainless-steel screws for non-load-bearing connections. Guidance for specification option: Where components of the system need to be pinned.
Cavity fire barriers	-
Horizontal	Not required. Securo FIREBREATHER® cavity barrier. Guidance for specification option: In the case of a fire, the cavity barrier will instantly seal the cavity and prevent fire spread. Tested according to sudden direct flame impingement ASTM 2912:13. Available with fire rating EI30. Available in lengths: 1130 mm. Depth x height: 23(+3) x 112 (±7) mm.
Vertical	Not required. Securo FIREBREATHER® cavity barrier. Guidance for specification option: In the case of a fire, the cavity barrier will instantly seal the cavity and prevent fire spread. Tested according to sudden direct flame impingement ASTM 2912:13. Available with fire rating EI30. Available in lengths: 1130 mm. Depth x height: 23(+3) x 112 (±7) mm.
Weatherboarding	-
Material	Scotlarch® - Scottish Larch.
Fasteners	L-GoFix® MS A2 stainless-steel screws and KompeFix®.
System accessories	Not required. KompeFix® flexible ventilation strips (not to be used with Burnblock Fire Treatment). Securo FIREBREATHER® cavity barrier.

Density	550 kg/m³.
Surface finish	Skimmed. Guidance for specification option: The face of each board is skimmed to provide a clean, unblemished fine-sawn finish. For Board-on-board.
Board profile	Board on board (BOB).
Reaction to fire	To EN 14915, D-s2, d0. Guidance for specification option: When used under the conditions for CWFT. Euroclass F (Untested). B-s1, d0. Guidance for specification option: When used under the conditions for Burnblock Fire Treatment.
Durability	To BS EN 350, Durability Class 3.
Applied finish	Burnblock Fire Treatment (Euroclass B). Guidance for specification option: For Board-on-board (BOB) and RW102. Burnblock Fire Treatment with SiOO:X (light grey). Guidance for specification option: For Board-on-board (BOB). Burnblock Fire Treatment with SiOO:X (mid grey). Guidance for specification option: For Board-on-board (BOB). SiOO (light grey). Guidance for specification option: Not recommended on planed surface finish. SiOO (mid grey). Guidance for specification option: Not recommended on planed surface finish. SiOO (original). Guidance for specification option: Not recommended on planed surface finish. Show more
Length	Guidance for specification option: Insert requirements up to 4800 mm.
Depth	22 mm.
Width	150 mm. Guidance for specification option: Sawn width (nominal). 73 mm.

Sustainability data

Country of material origin	United Kingdom
Country of product manufacture	United Kingdom
Embodied carbon A1-A3 (production stage) as defined in BS EN 15804	862 kg CO₂ eq/unit
Recyclability	Yes