Welcome to COLAS Limited

At COLAS Limited, we service New Zealand's important road network. We manufacture, supply and pave asphalt in the Greater Auckland and surrounding regions. Application of membrane seals, first coats and reseals on all types of projects

As our new website is under development, visit the COLAS Group website:

or contact the team below for more info!


Barry Blunt

Managing Director

Barry, a civil engineer from the Durban Institute of Technology, joined COLAS South Africa in 2003 after 12 years with the KZN Department of Transport. Over 15 years at COLAS, he’s held various management roles, including General Manager of Operations. In 2018, Barry moved to New Zealand, working for Higgins Contractors as Pavement Discipline lead on the Hamilton Expressway Project. In May 2021, he rejoined COLAS as Business Development Manager for SAMI in New Zealand. Following the complete acquisition of ASCO Asphalt in May 2023, Barry has assumed the role of Managing Director of COLAS in New Zealand.


Deane Bellis

Finance, HR, and Administration

Deane joined COLAS in January 2023, to lead the finance, HR and administration functions in New Zealand. Previously he has held several senior commercial roles across a range of industries including process engineering, manufacturing and building facilities within both corporate and private sector business. Deane also has a particular interest in organisational change management, system and process implementation and talent development. Deane is a Chartered Accountant and a graduate of the University of Waikato’s School of Management Studies.


Schalk Vorster

General Manager, Operations

Schalk has 33 years of civil construction experience in various countries, including Australia, Oman, Qatar, South Africa, Namibia, Lesotho, and New Zealand. His expertise spans medium to large-scale earthworks, pavement projects, and bituminous mix design for roads. He collaborates with clients, engineers, and contractors to propose innovative solutions. In roles such as General Manager - Operations and Technical Manager, he manages teams, resources, and product development, ensuring profitability and accreditation at provincial and national levels. Schalk excels in team leadership.


Dr Greg Arnold

Technical Services and Development

Dr Greg Arnold joined COLAS in February 2023 and is responsible for quality control and research and development in New Zealand. Prior to joining COLAS, Greg was a Technical Director with Road Science for 11 years. Before this, he held technical research roles at Pavespec Ltd, Waka Kotahi NZTA, and University of Nottingham, England where he completed his doctorate in Civil Engineering. Greg has a strong research and science background spanning 30 years, coupled with an applied technical knowledge to design materials and pavements to achieve benefits that will lead to more robust lower cost pavements with less impact on the environment.


Deon Ferreira

Area Manager

Deon joined COLAS in New Zealand, as an Area Manager in 2022 with an impressive 30 years of civil construction experience in earthworks, drainage, water/sewer reticulation and roadworks. His focus is on the management of small to large scale asphalt and surfacing contracts and has 20 years of experience in laying and manufacturing asphalt. Deon enjoys collaborating with clients to find innovative and cost-effective solutions. In his role he manages teams and resources to ensure that commitments to our clients are met at a fair price, the best quality, and at the right time.