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Engineered, load-bearing oriented strand board (OSB4) panel designed for use in humid conditions in both structural and non-structural applications. Manufactured using advanced ContiRoll® resin technology that results in a high performance, zero added formaldehyde panel.

Features and benefits:

  • Heavy-duty OSB4 panel, approximately 30–35% stronger than OSB3 panels.
  • High moisture and vapour resistance. Provides a more cost-effective alternative in humid and high-load structural applications than similar performing exterior structural plywood.
  • Airtight.
  • The resin formulation provides a strong bond with the wood, and when put under intense heat, creates a chemical weld.
  • Improved resistance to thickness swell due to extra resin penetration.
  • Manufactured in accordance with BS EN 300.
  • Compliant with 'The Green Guide to Specification'.
  • FSC® certified.
  • CE marked to EN 13986.

Applications:

  • Offsite construction systems.
  • Panelised systems e.g. timber frame, steel frame, SIP's.
  • Volumetric 3D modular builds.
  • Commercial buildings (e.g. insulated infill panels).
  • Industrial buildings (e.g. mezzanine flooring).
  • Large OSB construction systems.
  • Hybrid construction (e.g. Cross Laminated Timber (CLT)).
  • Site-based construction (e.g. Insulated Concrete Formwork (ICF)).
  • Engineered timber components (e.g. roof cassettes, box beams).
  • Industrial packaging.
  • Decorative applications.

Structures comprising SMARTPLY® ULTIMA should be assigned to service class 1 or 2 as defined in EN 1995-1-1 (Eurocode 5). Consult manufacturer for further details.

Related literature

The following content references this product:

Standard product features

Technical properties:

  • Product grade: OSB4.
  • Water vapour diffusion factor (μ) (to BS EN 12524 and EN 13986): Dry cup: 430; Wet cup: 180.
  • Reaction to fire: To BS 476-7: Class 3; to BS EN 13501-1: D-s2, d0 (excluding floorings).
  • Thermal conductivity (to BS EN 13986): 0.13 W/m∙K.
  • Sound absorption coefficient (to BS EN 13986): Frequency range 250–500 Hz: 0.10; Frequency range 1000–2000 Hz: 0.25.
  • Charring rate (to EN 1995-1-2): (≥20 mm) 0.78.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-95/465 Oriented strand board

Product specification

An important note about specifying

Manufacturer

Name:

MEDITE SMARTPLY

Tel:

+44 (0)1322 424900

Product reference

SMARTPLY® ULTIMA

Thickness

[ ______ ]

Board size (w x l)

[ ______ ]

Manufacturer details

Persimmon House,
Anchor Boulevard,
Crossways Business Park,
Dartford,
Kent, DA2 6QH
Tel +44 (0)1322 424900
Fax +44 (0)1322 424920
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