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Description

Jointed British sweet chestnut cladding which is hard-wearing and naturally durable. It is relatively light and stable when compared to other hardwood cladding, making it ideal for exterior cladding. It is available in many profiles and can be installed both horizontally and vertically. Compliant with BS EN 14915 and BS 8605-1; CE marked. Grown in England and Wales.

General information
Specification data - Hardwood weatherboards
Product Reference

Jointed Sweet Chestnut Profiled Hardwood External Cladding

Profile

Feather-edge, VFE1

Sawn, 4–18 mm depth, horizontal.

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

Profiled only.

95 mm

Profiled only.

120 mm

Profiled only.

145 mm

Profiled only.

150 mm

Feather-edge only.

Standard product features

Length:

  • Supplied in 4.0 m jointed lengths, allowing for small percentage of cut-backs.
  • In some cases special lengths can be offered. Jointed boards comprise individual sections from 300-1000 mm.

Appearance:

Newly machined boards will be a relatively consistent light straw colour; some pieces may include brown or yellow mineral colouring. Being jointed from shorter lengths, the colour variation will be more exaggerated and the zigzag joints will be noticeable. As the boards weather, the colour variation will even out and will change to a silver-grey patina.

Technical properties:

  • Moisture content: 16–20%.
  • Natural durability (to BS EN 350-2): Durable, Class 2.
  • Insect attack: Sapwood is excluded from front face.
  • Service life (to BS 8417): Occasionally wet: 60 years; frequently wet: 30 years.
  • Treatability class: Resistant.
  • Movement class: Small.
  • Resistance to impact: Medium.
  • Resistance to fixing: Medium, pre-drilling recommended.
  • When to fix: Ideally autumn/ winter /early spring.
  • Grading: BS 1186-3: Class 2; BS EN 942: J30; CE: Grade A.
  • Working properties: Average workability, takes fixings satisfactorily.
  • Extractives: Contains tannic acid, which will corrode ferrous metals. When the two come into contact, a blue sludge is formed that will stain the oak and anything else that it meets.
  • 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:

  • Feather-edge: Face fixed with stainless steel ring shank nails.
  • Profiled: Face fixed or secret nail fixed with stainless steel ring shank nails.

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