Unilin XT CW Cavity Wall PIR Insulation 1200 x 450 x 100mm

The Unilin XT CW PIR Cavity Wall Insulation Board is a premium-quality solution engineered to enhance thermal efficiency in masonry cavity wall constructions. With a rigid PIR (polyisocyanurate) core and low emissivity foil facings, this insulation board provides superior performance, helping you meet and exceed modern building regulations for energy efficiency.

Designed for easy installation and long-term durability, the Unilin XT CW board ensures consistent insulation coverage, reducing heat loss and maintaining comfortable indoor conditions all year round.

Features and Specifications

• Brand: Unilin
• Product Type: PIR Cavity Wall Insulation Board
• Dimensions: 1200mm (L) x 450mm (W) x 100mm (T)
• Material: High-performance PIR (polyisocyanurate) core
• Thermal Conductivity: 0.022 W/mK
• Facing: Low emissivity foil on both sides for improved thermal resistance
• Edge Detail: Tongue & Groove for secure jointing and reduced thermal bridging
• Fire Rating: Euroclass E
• Application: Partial-fill cavity wall insulation

Benefits

• Superior thermal efficiency – achieves low U-values with thinner walls.
• Lightweight and easy to handle – simplifies installation on-site.
• Durable and moisture-resistant – maintains performance in varying conditions.
• Tongue & groove edges – ensure tight joints and consistent insulation coverage.
• Compliant with regulations – designed to meet current building standards.
• Long-lasting performance – stable and reliable insulation for the life of the building.

Ideal Applications

• Partial-fill cavity wall constructions in residential and commercial buildings
• Suitable for brick-and-block masonry wall systems

What’s the difference between Unilin XT CW and Full Fill PIR boards?
The XT CW board is designed for partial-fill cavity walls, leaving a residual cavity to prevent moisture penetration. Full Fill boards completely fill the wall cavity for maximum insulation coverage.