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EcoTherm Eco‑Cavity Full-Fill Cavity Wall Insulation is a rigid polyisocyanurate (PIR) insulation board designed for full-fill masonry cavity wall constructions. Featuring a tongue-and-groove joint profile on all edges and low emissivity aluminium foil facings, the board offers high thermal performance and reduces heat loss through thermal bridging. Its PIR core provides excellent compressive strength and dimensional stability. With a thermal conductivity of 0.022 W/m·K, it’s ideal for new build and refurbishment cavity wall applications. Board sizes are 1200 x 450mm with 0.54m² coverage per unit. A 90mm board weighs approximately 1.86kg.

Key Features

• Thermal conductivity: λ = 0.022 W/m·K
• Efficient full-fill PIR insulation for masonry cavity walls
• Low emissivity foil facings – improves U-values
• Board dimensions: 1200 x 450mm (0.54m² coverage)
• Tongue-and-groove joint profile on all edges
• Compressive strength ≥ 140 kPa
• Reaction to fire classification: Euroclass F
• Certified to BS EN 13165:2012 + A2:2016
• Vendor: EcoTherm
• Datasheet