Knauf DriTherm 32 125mm Cavity Slab (2.184 m²)

The Knauf DriTherm 32 125mm Cavity Slab is a high‑performance, full‑fill insulation solution designed for external masonry cavity walls. Manufactured from water‑repellent glass mineral wool with a thermal conductivity of 0.032 W/m·K, it delivers excellent thermal resistance for wider cavity constructions.

The slabs measure 1 200 mm in length and 455 mm in width—sized to match standard vertical wall‑tie centres—allowing a tight friction‑fit installation without the need for retaining discs. Certified non‑combustible (Euroclass A1) and BBA‑certified for use in very severe exposure zones, this product supports building regulation compliance in demanding environments.

Specifications

Thickness: 125 mm
Thermal conductivity (λ): 0.032 W/m·K
Pack coverage: 2.184 m²
Material: Water‑repellent glass mineral wool

Key Features

• High‑performance insulation for wider cavity wall depths
• Water‑repellent treatment reduces moisture ingress and maintains thermal efficiency
• Non‑combustible (Euroclass A1) for enhanced fire safety
• Sized to fit directly between standard wall ties with minimal air gaps
• Manufactured using ECOSE® binder technology for lower environmental impact