Product Overview
STS Construction Board with a 12mm thickness and 1200mm x 800mm sheet size. This high-density cementitious fibre board is designed for use in wet areas, structural lining, and tile-backing installations.
It offers exceptional dimensional stability, moisture resistance, and mechanical strength compared with traditional plasterboard systems. Manufactured from a blend of cement, mineral fillers, and cellulose fibres, the board provides a robust, impact-resistant substrate that will not degrade or swell when exposed to humidity.
Its smooth, factory-finished surface is suitable for direct tiling, finishing, or decorative coatings. The 12mm thickness provides enhanced rigidity and load-bearing strength for wall, ceiling, and flooring applications requiring a strong, durable substrate.
Features & Benefits
- High moisture resistance: Ideal for bathrooms, showers, and wet-room environments where stability is essential.
- High density and strength: Provides excellent impact resistance and rigidity under load.
- Versatile substrate: Suitable for direct tiling, render, or decorative finishes without additional treatment.
- Dimensional stability: Maintains form and flatness even in fluctuating humidity or temperature.
- Durable composition: Resistant to mould, rot, and disintegration over time.
- Sheet size and thickness: 1200mm x 800mm board with 12mm thickness suited to heavy-duty wall and floor construction.
Applications
- Wall lining: Provides a durable, moisture-resistant substrate for tiled or finished surfaces.
- Floor underlay: Acts as a stable base layer beneath tiles or finishes in wet areas.
- Ceiling lining: Used where enhanced fire and moisture resistance is required overhead.
- Wet rooms and showers: Ideal for direct application behind waterproofing systems.
Installation Guidance
- Cutting: Score and snap using a tungsten or carbide knife; mechanical saws may be used with dust extraction.
- Fixing: Secure to framework or solid substrate using corrosion-resistant screws or fixings at regular intervals.
- Joint treatment: Reinforce joints with alkali-resistant mesh tape and suitable jointing compound or waterproof membrane.
- Finishing: Ensure surface is clean and dust-free before applying tile adhesive, render, or finish coat.
Compliance & Performance
- Material composition: Fibre-cement board manufactured to EN 12467 standards.
- Moisture performance: Water-resistant and dimensionally stable in humid and wet environments.
- Fire performance: Non-combustible to Euroclass A1 for enhanced fire safety.
- Environmental compliance: Contains no asbestos or harmful additives and meets EUTR timber regulations.
- Important note: Always handle with suitable PPE and follow manufacturer installation guidance to maintain certification and fire rating.