Environmental Certifications

GIB® Plasterboard holds many Environmental Certifications. Read the overview here.


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.

Environmental Protection Declaration

Winstone Wallboards is the first plasterboard manufacturer in Australasia to publish an Environmental Product Declaration (EPD). The EPD quantifies the environmental performance of GIB® plasterboard including its carbon footprint, embodied energy and other environmental data.

Projects utilising GIB® plasterboard will qualify for full Green Star points due to Winstone Wallboards holding an EPD for six or more products.

Global Greentag

GIB® plasterboards have also achieved Global Greentag Certification, one of the world's most robust, trusted and widely recognised ecolabels.


GIB Aqualine®,  GIB Weatherline®, GIB Barrierline®, GIB Toughline® and GIB Toughline® Aqua hold GECA (Good Environmental Choice Australia) Ecolabel certification which is a recognised ecolabel across New Zealand and Australia.


Declare certification is available for a range of GIB®  plasterboards. Declare is like a nutritional label for building products, offering specifiers, contractors and building users insight into the ingredients used in the manufacture of building products.