Gyprock Trio cornice symmetrical with contrast

Gyprocksupreg Trio Cornice

Trio is part of Gyprock's Inspirations range of cornice profiles. With its dramatic 3-step profile and strong, modern lines, Gyprock Trio cornice looks right at home in ultra modern spaces, but it’s also a subtle inclusion for a more traditional home.

Featuring a compact, 75mm profile, its symmetrical lines suit all ceiling heights and it’s an ideal cornice for open-plan areas as well as smaller spaces. For a more minimalistic profile size in areas such as hallways and utility rooms, Gyprock Duo is the perfect partner profile.

Installing a Trio cornice is a simple way to add a clever design contrast and balance classic and contemporary elements.

To see how Trio can enhance your room check out our cornice visualiser and download our HomeStyle magazine for great ideas and style tips to create the look you love.

Plasterboard cornice is extremely easy to cut, join and paint with no special tools or fixing equipment required, making it a cost-effective way to create great ambience at home.

Consider cornice when you are planning a new home to add detail and a personal touch. For a complete look, keep your architecture and door hardware in theme with your cornice style.

Gyprock Trio dimensions
Product Availability
Width(mm) Length (mm)
3000 3600 4200 4800 5400

To confirm product availability, please check with your local Gyprock supplier, or contact Gyprock customer service

Cornice Manufacture

Gyprock Trio cornice is composed of gypsum plaster encased in a strong linerboard and is manufactured to stringent product specifications.



Comprehensive installation instructions for Gyprock cornice can be found under the Resources tab and include:

For assistance with installation, try searching for a Gyprock plasterer, builder or repairer under the Locations tab.

Painting and Decoration

Finishes applied to cornice surfaces can have a significant effect on the perceived quality of the installation, particularly where critical lighting conditions exist.

  • Matt finishes minimise imperfection visibility
  • Semi-gloss and gloss finishes highlight imperfections
  • Light colours are less likely to show imperfections

Gyprock recommends paint systems consisting of one coat of a plasterboard sealer followed by two coats of finishing paint. Always follow the manufacturer’s instructions for application and recoating.

Gyprock recommend decoration in line with Master Painters Australia.

Material Safety


A Material Safety Data Sheet for Gyprock cornice is available from the Gyprock website under the Resources tab.


For guidelines on the safe handling of Gyprock cornice, reference should be made to the Gypsum Board Manufacturers of Australasia (GBMA) publication “Move it the GMBA Way – A Safe Manual Handling Guide for the Plasterboard Industry – Training Guide” (Reference SS172).​​


  • Gyprock products are manufactured for life with all CSR products designed to achieve optimal performance when part of a CSR integrated system