Unilin XT CW Cavity Wall PIR Insulation 1200 x 450 x 90mm

The Unilin XT CW PIR Cavity Wall Insulation Board is a premium rigid board designed for partial-fill masonry cavity walls, offering exceptional thermal performance with minimal wall thickness. Its rigid PIR (polyisocyanurate) core and low emissivity foil facings ensure excellent insulation while reducing heat loss and improving energy efficiency.

Lightweight and easy to handle, the board features tongue & groove edges for secure installation, tight joints, and long-lasting performance.

Features and Specifications

• Brand: Unilin
• Product Type: XT CW PIR Cavity Wall Insulation
• Dimensions: 1200mm (L) x 450mm (W) x 90mm (T)
• Material: High-performance PIR (polyisocyanurate) core
• Thermal Conductivity: 0.022 W/mK
• Facing: Low emissivity foil on both sides
• Edge Type: Tongue & Groove for reduced thermal bridging
• Fire Rating: Euroclass E
• Application: Partial-fill cavity wall insulation

Benefits

• High thermal efficiency – achieves low U-values in partial-fill walls.
• Easy installation – lightweight boards with interlocking edges.
• Durable and moisture-resistant – maintains insulation properties over time.
• Tongue & groove design – ensures secure, continuous coverage.
• Compliant with UK building regulations – meets current standards for cavity wall insulation.

Ideal Applications

• Partial-fill masonry cavity walls in residential and commercial properties
• Extensions, new builds, and refurbishment projects
• Walls requiring high thermal performance with minimal thickness

Can Unilin XT CW 90mm boards be used for full-fill cavity walls?
No, the 90mm XT CW board is specifically designed for partial-fill applications to leave a residual cavity for moisture protection.