Scope of Accreditation

Lab Testing

Winstone Aggregates currently operates 5 independently accredited IANZ laboratories across the country from Auckland to Wellington. These labs employ approximately 50 staff made up of local and international technicians with extensive experience both in New Zealand and overseas.

Though testing aggregates is a core part of the business, some of Winstone Labs’ scope of accreditation included testing for typical field construction, soil, concrete and asphalt. This allows them to undertake major local, national and international infrastructure project testing. 

We provide safe, accurate and fast IANZ certified and accredited testing for the Civil Engineering and Construction Industry. Our labs perform soil, road, materials, project, site and lab testing from experienced lab technicians. 


Services include:

  • Nuclear Density testing
  • Dynamic cone penetrometer
  • Shear strength
  • Impact hammer
  • Sieve analysis
  • Plasticity index
  • NZ Standard / Heavy / Vibratory and Australian modified compactions


Please contact your closest laboratory manager to obtain a quote.

Auckland Laboratory

Lab Auckland Laboratory

Address 489 Hunua Road, Hunua 

Manager Arn Stone


Phone 027 265 9254

Hamilton Laboratory

Lab Hamilton Laboratory

Address 72A Ryburn Road, Newstead, Hamilton

Manager Francois Fonternel


Phone 027 533 0768

Kapiti Coast Laboratory

Lab Kapiti Coast Laboratory

Address 160 Otaihanga Road, Waikanae

Manager Llewellyn Venter


Phone 027 311 3860

Wellington Laboratory

Lab Wellington Laboratory

Address 541 Hebden Crescent, Belmont 

Manager Karl Rutherford


Phone 027 509 7426

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