50mm Knauf Dritherm 37 50x455x1200mm - 6.55 m² Per Pack is a Cavity Wall Insulation Slab. Earthwool Dritherm 37 Standard grade Cavity Slabs are semi-rigid or rigid slabs of non-combustible, water repellent, glass mineral wool. They are 455mm wide to suit standard vertical wall tie spacing, ensuring a closed joint with adjacent slabs.

Specifications:Thickness: 50mmWidth: 455mmLength: 1200mmPack Quantity: 12Pack Coverage: 6.55m²Density: 17kg/m³Weight/m²: 0.85kgWeight: 5.57kgThermal Conductivity: 0.037W/mKR-Value: 1.4m2K/WFire Rating (Reaction to Fire): A1(Non-combustible)

Benefits:

• Excellent thermal performance.
• Non-combustible A1 Euroclass Reaction to Fire classification
• Manufactured using a water repellent additive
• Fully fill the cavity to prevent mortar snots and prevent bridges
• Slabs are sized to fit between wall ties without the need for retaining discs,
• Quick and easy to install
• British Board of Agrément approved for use in all exposure zones

Lambda Value = 0.037

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