12mm MASTERBOARD Calcium Silicate Board is a high-performance, non-combustible building board designed for applications requiring excellent moisture resistance, durability and a smooth decorative finish. Manufactured from calcium silicate and reinforced with selected fibres and fillers, the 12mm MASTERBOARD is formulated without inorganic fibres and contains no added formaldehyde, making it a reliable choice for both residential and commercial projects.
At just 12mm thick, this versatile calcium silicate board is ideal for internal wall linings, ceiling applications, partition systems and areas where a thin, durable and moisture-resistant board is required. The Promat Masterboard features an attractive off-white finish with a smooth face and a sanded reverse, allowing it to be left undecorated or easily finished with paint, wallpaper, ceramic tiles or other decorative coverings.
Designed to perform in challenging environments, the 12mm MASTERBOARD is highly resistant to moisture and humidity, meaning it will not physically deteriorate when exposed to damp conditions. It also offers excellent thermal stability, withstanding temperatures of up to 80°C and frequent temperature fluctuations without compromising its strength or performance.
Whether you're working on a new build, renovation or commercial fit-out, 12mm MASTERBOARD Calcium Silicate Board provides a dependable, easy-to-finish solution for projects requiring a durable, moisture-resistant and non-combustible construction board.









