Knauf DriTherm 37 75 mm Cavity Slab (4.37 m²)

The Knauf DriTherm 37 75 mm Cavity Slab is a high‑performance insulation slab designed for full‑fill installation in external masonry cavity walls. Manufactured from water‑repellent glass mineral wool using ECOSE® binder technology, it offers a thermal conductivity of 0.037 W/m·K and a thermal resistance of approximately 2.00 m²K/W. 

The slabs measure 1,200 mm in length and 455 mm in width, allowing a friction‑fit installation between standard wall‑tie centres, ensuring minimal air gaps and optimal thermal performance. They are non‑combustible with a Euroclass A1 fire rating and are BBA‑certified for use in all exposure zones including very severe conditions. 

Specifications

Thickness: 75 mm
Thermal conductivity (λ): 0.037 W/m·K
Pack coverage: 4.37 m²
Dimensions: 1,200 mm (L) × 455 mm (W)

Key Features

• Full‑fill solution for external masonry cavity walls
• Water‑repellent treatment to maintain performance in moist conditions
• Non‑combustible Euroclass A1 for enhanced fire safety
• Slab width tailored to standard wall‑tie spacing for closed‑joint installation
• Manufactured using ECOSE® binder technology for lower environmental impact