Unilin XT CW Cavity Wall PIR Insulation 1200 x 450 x 60mm

The Unilin XT CW PIR Cavity Wall Insulation Board offers outstanding thermal performance in partial-fill masonry wall constructions. Featuring a rigid PIR (polyisocyanurate) core with low emissivity foil facings, this insulation board minimizes heat loss and enhances energy efficiency without increasing wall thickness.

With its lightweight design and tongue & groove edge detail, it ensures quick installation, tight joints, and long-lasting performance, making it a reliable choice for new builds and renovation projects.

Features and Specifications

• Brand: Unilin
• Product Type: PIR Cavity Wall Insulation Board
• Dimensions: 1200mm (L) x 450mm (W) x 60mm (T)
• Material: High-performance PIR (polyisocyanurate) core
• Thermal Conductivity: 0.022 W/mK
• Facing: Low emissivity foil on both sides for enhanced insulation
• Edge Detail: Tongue & Groove for precise fit and minimal heat loss
• Fire Rating: Euroclass E
• Application: Partial-fill cavity wall insulation

Benefits

• Superior thermal efficiency – helps achieve low U-values in thinner wall designs.
• Quick and easy to install – lightweight board with interlocking edges.
• Moisture-resistant and durable – retains insulation properties over time.
• Tongue & groove joints – reduce cold bridging and ensure continuous coverage.
• Regulation compliant – meets current UK building standards for thermal insulation.
• Long-term performance – stable, reliable solution for residential and commercial walls.

Ideal Applications

• Suitable for partial-fill cavity wall construction in homes, extensions, and commercial buildings.
• Ideal for energy-efficient masonry wall systems.

What wall types is the Unilin XT CW 60mm insulation suitable for?
This board is specifically designed for partial-fill masonry cavity walls, providing excellent insulation while maintaining a residual cavity to prevent moisture ingress.