Unilin Cavity Wall Insulation Full Fill PIR 1200 x 450 x 150mm

The Unilin Full Fill PIR Cavity Wall Insulation Board is a premium rigid insulation solution designed to provide maximum thermal efficiency in full-fill masonry cavity wall constructions. Made with a high-performance PIR (polyisocyanurate) core and foil facings, it ensures a continuous layer of insulation, helping reduce heat loss and improve energy efficiency throughout the building.

Ideal for new builds and refurbishment projects, these boards fill the cavity completely, eliminating air gaps and cold bridging, while offering long-term durability and compliance with modern building regulations.

Features and Specifications

• Brand: Unilin
• Product Type: Full Fill PIR Cavity Wall Insulation
• Dimensions: 1200mm (L) x 450mm (W) x 150mm (T)
• Material: Rigid PIR foam with low emissivity foil facing
• Thermal Conductivity: 0.022 W/mK
• Edge Detail: Tongue & Groove for tight, continuous joints
• Fire Rating: Euroclass E
• Water Resistance: High – prevents moisture penetration
• Applications: Full-fill masonry cavity wall systems

Benefits

• Maximum thermal performance – low U-values for superior energy efficiency.
• Full-fill design – completely fills the wall cavity for consistent insulation coverage.
• Moisture-resistant – foil facings provide an effective barrier against damp and condensation.
• Lightweight and easy to install – rigid boards with tongue & groove edges for a precise fit.
• Durable and long-lasting – retains thermal properties throughout the building’s lifetime.
• Ideal for regulatory compliance – meets current UK building regulations for cavity wall insulation.

Ideal Applications

• Full-fill masonry cavity walls in residential and commercial buildings
• New builds, extensions, and refurbishment projects requiring continuous insulation

Can the 150mm Full Fill PIR board be used in partial-fill applications?
No, this product is designed for full-fill applications only to provide complete insulation coverage in cavity walls.