Winstone Pulp International Limited (WPI)

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Welcome to Winstone Pulp International Limited (WPI).

WPI is the wood processing division of Ernslaw One Ltd, (EOL) New Zealand’s 4th largest forestry estate owner, with in excess of 110,000 hectares of Radiata Pine and Douglas Fir plantations under its management.

WPI has its beginnings back in 1978 as the operators of the Karioi pulp mill


and in 1991 started its investment in sawmilling through the acquisition of the Tangiwai Sawmill.

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Since that time, considerable investment has been made in both its Pulp and Sawmill operations such that capacity today sits at approx. 200,000 ADMT per annum of pulp output and approx. 105,000m3 per annum of green  sawn timber output.

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The Tangiwai sawmill producers green sawn timber for use in a wide variety of end uses from utility / packaging grades up to feed stock for higher value processors from furniture through to framing and remanufacturers.

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Sourcing the majority of its round wood inputs from EOL’s FSC certified forests means WPI can offer FSC certified sawn timber to the domestic and international market place.

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Surety of supply has been a hall mark of WPI, from its own secure forest resource through to its well established logistic framework; consider making WPI your future supply source, contact for your next enquiry or further details.