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IBuilt CoreClad

IBuilt CoreClad panels are manufactured from both Hoop Pine and Klinkii Pine, which have been grown from sustainably managed plantation forests.

Individual veneers are ACQ treated to meet hazard class H3.2 and then manufactured into plywood sheets by bonding the treated veneers with a Type A structural marine bond. The plywood sheets are machined, band sawn, grooved (if required) and ship-lapped to form the finished cladding panel.

The manufacture of IBuilt CoreClad is third party certified by EWPAA to meet AS/NZS 2269:2012-Plywood Structural Standard.

IBuilt CoreClad panels are supplied Grade S-D, F14 in the following dimensions:

  • Sheet thickness: 12mm
  • Sheet length: 2440, 2745, 3050mm
  • Sheet width: 1200mm (cover), 1220 (overall)
  • Sheets available: Textured Grooved 150 and Textured
Key Features
  • Individual veneer treatment before manufacture ensures treatment to the core
  • Cut edges do not need to be re-treated
  • Available in 2440, 2745, and 3050mm long sheets
  • Band sawn face for a rough textured finish
  • Supplied Textured Grooved 150 and Textured
  • Manufactured from high strength plantation pine (F14)
  • Manufactured to AS/NZS 2269: 2012. Third party Certified by the EWPAA
  • Meets the Durability requirements of the NZBC for claddings
  • Install to E2/AS1 NZBC
Scope of Use
  • CoreClad panels are for use as external cladding


  • In wind zones up to extra high, as defined in NZS 3604:2011 or to a design wind pressure (ULS) of 2.5kPa
  • In all corrosion zones as defined in NZS 3604:2011


  • In conjunction with a primary structure that complies with the NZ Building Code, or where the designer and/or installer has established that the existing structure is suitable for the intended building work
  • CoreClad may be direct fixed or installed over a drained, ventilated cavity
Limitations on Use


  • Where adverse microclimatic conditions apply, as set out in paragraph 4.2.4, NZS 3604:2011, contact IBUILT for technical advice
  • Must be located further than 1 m from a relevant boundary


  • The building is to fall within the scope of E2/AS1 paragraph 1.1 for building height and floor area
  • Direct fixed only applies where the elevation has a risk score of 6 or less (refer table 3, E2/AS1)
Statement of Building Code Compliance

If designed, installed and maintained in accordance with all IBUILT requirements, CoreClad will comply with or contribute to compliance with the following performance claims:

  • B1 Structure: B1.3.1, B1.3.2, B1.3.3 (a, b, f, h, j, m, q), B1.3.4 (a, b, c, d, e)
    Alternative Solution AS/NZS 2269:
    • Plywood manufactured to AS/NZS 2269 is referenced in E2/AS1 for use as a rigid air barrier and external cladding. This implies that plywood to this standard will have the necessary structural integrity for those uses.
  • B2 Durability: B2.3.1(b), B2.3.1(b)
    Verification Method:
    • B2/VM1: cl1.3 Verification through comparison with a similar material
    • AS/NZS1604.3, para 1.9 requires same characteristic values for penetration & retention as defined in NZS 3640:2003
    • IVS test results show these values are met
  • E2 External Moisture: E2.3.2, E2.3.5, E2.3.7 (a, b, c)
    Acceptable Solution E2/AS1
    • Installation to section 9.8
  • F2 Hazardous Building Materials: F2.3.1
    Alternative Solution
    • PNG Forest Products Treatment Protocol
Drawings: Installation Details
Installation & Design Guide

Sept 23

Data Sheet


PASS Product Statement

No 19015 (2024)

EWPAA Certification
Maintenance and Warranty
Handling and Storage Information


New Zealand Wood Products Ltd is a supplier of I-Built engineered timber, glulam, plywood and associated materials.

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