PŁYTY CEMENTOWE
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Rendering Cement Boards UK – High-Performance STS Carrier Boards
Renders World is a specialist supplier of rendering cement boards UK, providing high-performance STS fibre cement solutions for modern facade engineering. These heavy-duty render carrier boards UK are specifically designed to provide a dimensionally stable, moisture-resistant substrate for thin-coat silicone and acrylic renders. Engineered for demanding construction environments, our sts render board UK range ensures a crack-free foundation for external wall insulation (EWI) and direct-fix applications on timber or steel frame structures. With a focus on structural integrity and Part L 2025 energy compliance, these boards offer a superior alternative to traditional masonry for contemporary UK building projects.
Technical Specifications & Performance Standards
Our fibre-cement boards are manufactured to withstand the extreme moisture and temperature fluctuations of the UK climate. Every render board UK in our collection is Euro Class A1 fire rated, making them suitable for use in high-rise developments and fire-sensitive timber-frame buildings where safety and legal compliance are paramount.
| Property | Specification / Value |
|---|---|
| Material Type | Heavy-Duty Fibre Cement |
| Fire Classification | Euro Class A1 (Non-combustible) |
| Dimensional Stability | High (Resistant to warping/shrinking) |
| Standard Thickness | 12mm (Standard for rendering) |
| Moisture Resistance | 100% Weatherproof & Rot-proof |
| Compliance | EN 12467 / BBA Certified Systems |
Key Benefits for Frame-Based Construction
- Extreme Impact Strength: Provides a robust shield against mechanical damage in high-traffic commercial and residential zones.
- Moisture & Mould Resistance: Unlike plywood or gypsum-based boards, fibre cement will not degrade or support fungal growth when exposed to dampness.
- Superior Adhesion: The textured surface of our sts render boards is optimized to create a high-strength mechanical bond with basecoat mortars.
- Weatherproof Foundation: Ensures the render system remains stable even before the final topcoat is applied, protecting the underlying structure from wind and rain.
- Flexible Application: Ideal for modular builds, extensions, and the remediation of existing framed elevations.
Is This Substrate Right for Your Project?
- Choose these boards if: You are rendering over a timber or steel frame and require an A1 fire-rated, non-combustible carrier that prevents render cracking.
- Note: To maintain system warranties, these boards must be fixed using specialized stainless steel or coated screws to prevent corrosion tracking through the render.
Frequently Asked Questions
Do I need to prime cement boards before rendering?
Yes. We strongly recommend using a high-adhesion exterior render primer to regulate suction and ensure a uniform curing process for the basecoat and mesh layer.
What screw spacing is required for render boards?
For standard 12mm boards on timber or steel studs, we typically recommend fixings at 300mm centres. For a complete guide on secure attachment, view our range of sts render board screws and fixings.
Can these boards be used for internal wet-rooms?
While primarily engineered for external facades, their extreme moisture resistance and A1 fire rating make them an excellent high-end substrate for internal areas prone to heavy water exposure or high temperatures.
For a detailed walkthrough on joints and reinforcement, please read our professional guide: Cement Boards for Rendering UK: Application & Detailing Guide. Browse our full rendering menu to find compatible basecoats and silicone finishes.




