Verified by manufacturer 27 days ago
Board on board (BOB) Profile - Vertical
Certificate of constancy of performance
Certificate type
EPD
Certificate type
DoP
Certificate type
UK Conformity Assessed (UKCA)
Certificate type
Scottish Larch timber cladding.
Suitable for use as external timber cladding.
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:
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 | |
CAWS | H21/15 Horizontal timber weatherboarding H21/10 Vertical timber weatherboarding H21/111 Horizontal timber weatherboarding H21/115 Vertical timber weatherboarding |
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. |
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.
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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.
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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:
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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. |
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. |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Material | Timber |
Embodied carbonA1-A3 (production stage) as defined in BS EN 15804 | 862 kg CO₂ eq/unit |
Recyclability | Yes |
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
Platform | Compatible | Version |
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- | 1 | |
- | 1 |