12mm STS Construction Board (2400x1200mm)

12mm STS Construction Board (2400 x 1200mm) is a heavy-duty fibre cement construction board designed for use in wet, high-moisture, and high-load environments. Ideal as a professional alternative to traditional tile backer boards, this large-format board provides a strong, water-resistant, and non-combustible substrate for tiling and surface finishes in residential and commercial projects.

Manufactured from dense fibre cement, STS Construction Board is completely waterproof and will not swell, rot, or deteriorate when exposed to moisture. The 12mm thickness delivers excellent rigidity and load-bearing performance, making it suitable for both wall and floor installations. The large 2400 x 1200mm board size allows for fast coverage of wide areas, reducing joints and improving installation efficiency on site.

Key Features

• Heavy-duty fibre cement construction board

• 100% water-resistant and non-combustible

• 12mm thickness for enhanced strength and rigidity

• Large-format board for faster installation

• Resistant to mould, rot, and moisture damage

• Suitable NoMorePly-style alternative

Typical Applications

• Wet rooms and shower enclosures

• Bathroom walls and floors

• Commercial washrooms and changing facilities

• Kitchen and utility room installations

• Tiled wall and floor systems in high-moisture areas

Performance & Workability

• Provides a durable, waterproof base for tiles and finishes

• Suitable for both wall and floor applications

• Easy to cut and drill using fibre cement tools

• Compatible with tile adhesives, membranes, and waterproofing systems

• Helps prevent tile movement and moisture-related failure

Technical Specification

• Product Type: Fibre Cement Construction Board

• Brand: STS

• Material: Fibre Cement

• Thickness: 12mm

• Width: 1200mm

• Length: 2400mm

• Application: Walls and Floors in Wet and High-Moisture Areas

Why Choose 12mm STS Construction Board (2400 x 1200mm)?

12mm STS Construction Board offers a robust, professional solution for large-scale wet-area installations. With its waterproof, non-combustible construction and large board format, it delivers strength, efficiency, and long-term reliability for demanding residential and commercial projects.