13/01/2026
Glasroc X, our Class 4 vapour-permeable rigid air barrier board, has been rigorously tested and assessed against key standards for structural, weathertightness, fire performance, vapour permeability, mould resistance, as well as thermal and acoustic properties—delivering reliable protection in all weather conditions.
• Up to 6 months weather exposure
• Exceptional weathertightness performance+
• Withstands wind pressures up to ±6kPa (ULS)
• Fire protection of up to FRL 60/60/60 on timber and steel frame and up FRL 90/90/90 on steel frames++
• Suitable for bushfire zone BAL FZ+++
• Suitable for non-combustible construction++++
Learn more at https://brnw.ch/GlasrocX
+When used with Cemintel cavity-fixed cladding including Territory, Surround, Barestone and ExpressPanel; and Hebel PowerPanel, PowerPanel 50 and PowerPattern.
++When used with Gyprock Fyrchek as an internal lining
+++ For fire-rated wall systems of FRL 30/30/30, they are deemed to achieve BAL-FZ rating as per AS 3959.
++++Plasterboard may be used wherever a non-combustible material is required