Sustainability and the environment

Winstone Wallboards is committed to a holistic view of sustainability: environmental, social and economic.

  • We manufacture products that are good for the environment.
  • We actively consider the full lifecycle of our products and support recycling initiatives both from our manufacturing and general construction waste.
  • We innovate systems and solutions that keep people safe and protected in buildings.
  • We support jobs and growth within our communities.

GIB® Plasterboard - a green building material

GIB® plasterboard is a sustainable, non-toxic, compostable product made from natural gypsum and 100% recycled paper.

GIB® plasterboards do not use fly ash, a derivative of coal extraction, as a bulk filler* in place of naturally occurring gypsum.

 * 10mm GIB Aqualine® board uses less than 0.7% fly ash as a processing agent, not as a bulk filler.

Waste minimisation and recycling

Auckland Area

Green Gorilla Operates a plasterboard recycling service throughout the greater Auckland area. Plasterboard offcuts are collected from site with volumes recorded and reported per project allowing plasterboard recovery statistics to be provided as part of total site landfill diversion and environmental reporting for Greenstar and Homestar accreditation.

2m³ Green Gorilla plasterboard offcut site recycling bags can be purchased via your preferred merchant branch and included as part of your GIB® Deliver To Site order or alternatively a wider range of bag options can be ordered directly from Green Gorilla.


Nelson Area 

Waste Management operates a plasterboard offcut collection service in the Nelson Area. Offcuts are then processed locally by a Nelson compost and landscaping company where the gypsum core is extracted and used in a range of compost and agriculture products throughout the South Island.


Christchurch Area

Waste Management operates a plasterboard offcut collection service in the Christchurch area. Offcuts are then processed locally by Canterbury Landscape Supplies where the gypsum core is extracted and used in a range of compost and agriculture products.


Queenstown Area

Allwaste and Waste Management operate plasterboard offcut collection services in the Queenstown area. Plasterboard offcuts are then transported to Canterbury Landscape Supplies for recycling.,


Other Regions

Winstone Wallboards is currently working with local waste diversion providers to expand plasterboard waste recycling options.


Reuse of Plasterboard Offcuts on Site


GIB® Plasterboard offcut composting guidelines

Using the gypsum sourced from plasterboard offcuts can provide a range of benefits for composting products. The below compost guidelines provide answers to common questions around the use of plasterboard offcuts into composting products.   

Local manufacture

GIB® plasterboard and compounds are manufactured in New Zealand*. We have complete oversight of our factory conditions and the teams who work in our manufacturing plants. Our decision to manufacture locally supports local jobs and directly supports the country’s economy.

*Note: GIB Barrierline® plasterboard is manufactured to Winstone Wallboards’ specific specification from a reputable overseas manufacturer.

GIB® Plasterboard EnviroSpec Summary

The EnviroSpec website assists specifiers with gaining an overview of the material points available when using GIB® plasterboard as part of the main sustainability certification schemes in use in New Zealand such as the Green Star, Homestar and Living Building Challenge.

View the GIB® Plasterboard Green Building Summary here.