Winestone Wallboards Ltd
Winstone Wallboards is New Zealand's only manufacturer and largest marketer of gypsum plasterboard, drywall systems, associated products and services. The company has been operating since 1927 and manufactures plasterboard systems under the GIB® brand. Winstone Wallboards has facilities in Auckland, Wellington and Christchurch, and is part of the Building Products Division of Fletcher Building - a New Zealand-based international company.