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IBS High-Density Hardboard

IBS high-density hardboard is an impact and indent resistant, high-density hardboard, manufactured from FSC certified eucalyptus using wood fibres, heat, water and pressure. It is manufactured to have a Super E0 formaldehyde emission rating and has no added chemicals or resins. IBS high-density hardboard is available in four variations (standard, pegboard, tempered and flooring underlay).


Standard Hardboard:

  • 3.2mm — 2400 x 1200mm
  • 4.8mm —2400 x 1200mm
  • 6.4mm — 2440 x 1220mm

Tempered Hardboard:

  • 4.8mm — 2440 x 1220mm


  • Raw 4.8mm — 2440 x 1220mm
  • White 4.8mm — 2440 x 1220mm
  • White 4.8mm — 1200 x 1200mm
  • White 4.8mm — 1200 x 600mm


  • Underlay 5.0mm — 1220x915mm
Key Features
  • Highly impact resistant
  • Smooth, grainless and without knots
  • Does not split, crack, or splinter
  • Very safe to cut and easy to install
  • Multi-use product
Scope of Use
  • In conjunction with a substrate that complies with the NZ Building Code or for an existing building, where it is suitable for the intended building work.
  • For internal use in protected areas
  • For all uses where a high quality, paintable face finish is required
  • As a flooring underlay
Limitations on Use
  • The substrate must allow fixing in accordance with the current IBS High-Density Installation and Maintenance Guide
  • IBS High-Density Hardboard must not be subject to sustained wetting or high humidity conditions
  • IBS High-Density Hardboard must not be used as a structural element, although the product is designed to be self-supporting
  • For flooring use, only the flooring variation of IBS High-Density Hardboard may be used
Statement of Building Code Compliance

If designed, used, installed & maintained in accordance with the scope, this product will meet the following provisions of the NZBC.

  • B1 Structure
  • B2 Durability: B2.3.1(c)
  • C3 Fire Affecting Areas Beyond the Source: C3.4 (a)
  • F2 Hazardous Building Materials: F2.3.1
B1 Structure compliant
B2 Durability compliant
C Protection from Fire compliant
Protection from Fire
F2 Hazardous Building Materials compliant
Hazardous Building Materials
PASS PTS: High Density Hardboard

PASS 19139

Warranty General Terms: Hardboard

August 2021

Warranty General Terms: Hardboard Underlay

August 2021

Installation and Maintenance Guide: High-Density Hardboard

August 2021


Since 1993, IBS has been working with the top building products producers from around the world to bring New Zealand a panel product range to help Kiwis build better.

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