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Description

Thermally modified British ash cladding, produced from ash logs sourced from native woodlands. Brimstone ash is relatively knot free and even in colour, offering a clean appearance. Brimstone ash is available in many profiles and can be installed both horizontally or vertically. Thermal modification results in superior levels of stability and durability. Compliant with BS EN 14915 and BS 8605-1; CE marked. Grown in Great Britain. GIB independently certified.

General information
Color

Consistant dark chocolate brown colouring

Features

Durable, stable, consistent weathering, grown in Britain

Finish

Smooth machined

Material

Timber

Shape

All machined cladding profiles

Size

20 x 70 mm

20 x 95 mm

20 x 120 mm

20 x 145 mm

WarrantyDescription

None

Uniclass 2015
Timber lining boards (Pr_25_71_97_88)Primary
Specification data - Timber lining boards
Product Reference

Brimstone Ash Modified Profiled Timber Cladding

Profile

Halflap, VHL1

Machined; 20 mm depth, vertical.

Halflap, VHL2

Machined; 20 mm depth, vertical.

Halflap, VHL3

Machined; 20 mm depth, vertical.

Halflap, VHL4

Machined; 20 mm depth, vertical.

Halflap, VHL5

Machined; 20 mm depth, horizontal.

Halflap, VHL6

Machined; 20 mm depth, horizontal.

Halflap, VHL7

Machined; 20 mm depth, horizontal.

Shiplap, VSL1

Machined; 20 mm depth, horizontal.

Shiplap, VSL2

Machined; 20 mm depth, horizontal.

Shiplap, VSL3

Machined; 20 mm depth, horizontal.

Splayed, VSP1

Machined; 20 mm depth, horizontal.

TG&V, VTG1

Machined; 20 mm depth, vertical or horizontal.

TG&V, VTG2

Machined; 20 mm depth, vertical or horizontal.

TG&V, VTG3

Machined; 20 mm depth, vertical or horizontal.

TG&V, VTG4A

Machined; 20 mm depth, horizontal.

TG&V, VTG5A

Machined; 20 mm depth, horizontal.

TG&V, VTG6

Machined; 20 mm depth, vertical.

Width

70 mm

95 mm

120 mm

145 mm

Standard product features

Length:

Random lengths 1.8-3.0 m, allowing a small percentage down to 1.5 m. Lengths of over 3.0 m may be included but are not guaranteed.

Appearance:

Consistent dark chocolate brown colouring with a clearly defined grain pattern. The colour is further enhanced by the application of a clear oil such as Osmo UV-resistant oil. Brimstone ash weathers to a silver/ grey colour more quickly than non-modified timber. Boards are relatively knot and defect free.

Technical properties:

  • Moisture content: 4 - 6%.
  • Natural durability (to BS EN 350-2): Durable, Class 1.
  • Insect attack: Thermally modified wood is resistant to insect attack when used above ground contact.
  • Service life (to BS 8417): Occasionally wet: 60 years; frequently wet: 30 years.
  • Treatability class: Resistant.
  • Movement class: Small.
  • Resistance to impact: Medium to high.
  • Resistance to fixing: High, modified wood is brittle and should be treated with care.
  • Mean density (when dry): 330–390 kg/m³.
  • When to fix: No restrictions.
  • Grading: BS 1186-3: Class 1; BS EN 942: J20; CE: Grade A.
  • Working properties: Thermally modified woods are more brittle than untreated wood. Care should be taken when cutting and nailing to prevent chipping and break-out; pre-drilling is advised.
  • Extractives: The modification process involves no chemicals, and any natural chemicals in the wood are removed during the process. Thermally modified wood can be treated as inert.
  • Emission of formaldehyde (to BS EN 14915): E1 (not significant).
  • Reaction to fire (to BS EN 14915): Euroclass F (untested), D-s2, d0.
  • Fire treatment: Untested.

Product Options

Fixing:

Face fix or secret fix using stainless steel ring shank nails (dependent on profile) or second fix gun stainless steel brad nails.

Digital objects
PlatformCompatibleVersionCertified to
IFC
- 1 2.0
Revit
Revit 2017 1 2.0
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