PIR Insulation for Insulated Render Systems

PIR (polyisocyanurate) insulation boards are widely used in External Thermal Insulation Composite Systems (ETICS), providing a high‑performance solution for insulated render façades. They deliver excellent thermal efficiency in a slim profile, making them ideal for both new‑build and refurbishment projects where space saving and energy performance are critical. PIR insulation boards for insulated render systems combine high thermal efficiency, durability, and fire safety in a lightweight, easy‑to‑install format. Designed specifically for ETICS applications, they ensure compliance with modern energy standards while providing a reliable base for rendered or cladded façades.

Key Characteristics

• Material: Rigid PIR foam core, unfaced for direct adhesion in render systems.
• Function: External wall insulation beneath render finishes, brick slips, or cladding.
• Thermal Performance: Very low thermal conductivity (λ ≈ 0.023–0.025 W/(m·K)), enabling thinner insulation layers while achieving demanding U‑value targets.
• Durability: High compressive strength and low water absorption, ensuring long‑term stability.
• Fire Behaviour: Improved fire resistance compared with traditional PUR foams.
• Installation: Lightweight boards, easy to cut and fix with ETICS adhesives and mechanical anchors.
• Finish Compatibility: Suitable for use beneath mineral renders, synthetic renders, brick slips, or ventilated cladding systems.

Applications

• External walls in residential, commercial, and industrial buildings.
• ETICS render systems requiring slim insulation profiles without compromising performance.
• Refurbishment projects where maximising internal space and improving energy efficiency are priorities.