Independent Building Supplies

Independent Building Supplies

IBS supplies an extensive range of building panel products throughout New Zealand.

Product literature confirmed current on September 14 2017


PRIMAflex Fibre Cement Board

Title Title Title Title


Ranges:  Exteriors

Categories:  Fibre Cement Cladding


PRIMAflex is suitable for ceiling and eave lining, partitions, gable ends, external wall cladding, panelling and other building applications. It comes with a smooth surface and square edges, is easy to work on and offers an excellent base for a good paint finish surface.

PrimaFlex has superior fire performance, is dimensionally stable and requires low maintenance.


  • 4.5mm 1800x1200
  • 4.5mm 2400x1200
  • 4.5mm 2400x450
  • 4.5mm 2400x600
  • 4.5mm 3500x750
  • 4.5mm 2400x900
  • 4.5mm 2700x1200
  • 4.5mm 3000x1200
  • 6mm 1800x1200
  • 6mm 2400x1200
  • 6mm 2400x900
  • 6mm 2700x1200
  • 6mm 3000x1200
  • 9mm 2400x1200
  • 16mm 2400x1200

Key Features

  • Fire resistant
  • Highly resistant to decay, termite and rodent attack and most chemicals
  • Weather resistant
  • Structurally strong
  • Ideal substrate for various types of coatings
  • Good workability
  • Smooth surface
  • Square edges on all four sides

Scope of Use

The PRIMAflex Fibre Cement Board is designed to be used as an external wall cladding system for residential and light commercial type buildings where domestic construction techniques are used.

The PrimaFlex Cavity System consists of PrimaFlex sheet, which is a fibre cement sheet product, fixed over timber battens to form the cavity. The cladding joints are finished with purpose-made jointers, timber battens or sealant and the system is finished with a latex paint system. The cladding incorporates a primary and secondary means of weather resistance (first and second line of defence) against water penetration by separating the cladding from the external wall framing with a nominal 20mm cavity.

Statement of Building Code Compliance

In the opinion of BRANZ, the PRIMAflex Cavity System if designed, used, installed and maintained in accordance with the statements and conditions of Appraisal No. 635 (2008), will meet the following provisions of the NZBC:

  • Clause B1 Structure: Performance B1.3.1, B1.3.2 and B1.3.4. The PrimaFlex Cavity System meets the requirements for loads arising from self-weight, wind and impact [i.e. B1.3.3 (a), (h) and (j)].
  • Clause B2 Durability Performance B2.3.1 (b), 15 years, B2.3.1 (c) 5 years and B2.3.2. The PrimaFlex Cavity System meets these requirements.
  • Clause E2 External Moisture Performance E2.3.2. The PrimaFlex Cavity System meets this requirement.
  • Clause F2 Hazardous Building Materials Performance F2.3.1. The PrimaFlex Cavity System meets this requirement and will not present a health hazard to people.

The PRIMAflex Cavity System has been appraised as an Alternative Solution in terms of New Zealand Building Code compliance.

NZBC Designed to Comply

B1 Structure compliant


B2 Durability compliant


E2 External Moisture compliant

External Moisture

F2 Hazardous Building Materials compliant

Hazardous Building Materials

IBS pre primed soffit 1

PrimaFlex Now Comes Pre-Primed for Soffit Lining

January 2017

PrimaFlex Fibre Cement Board is now available pre-primed on the front face and side edges, which saves on cost and time required for soffit installation.

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