75mm Knauf DriTherm 37 Cavity Insulation Slab

75mm Knauf DriTherm 37 Cavity Insulation Slabs are water-repellent Glass Mineral Wool slabs engineered for full-fill applications in masonry cavity walls. These slabs deliver excellent thermal performance across a range of construction projects. They're non-combustible and achieve the highest Euroclass A1 fire rating. Made using Knauf Insulation ECOSE® Technology bio-based binder.

Product specification

• Brand: Knauf®
• Model: DriTherm 37 - 75mm
• Thickness: 75mm
• Length: 1200mm
• Width: 455mm
• Dimensions: 1,200mm x 455mm x 75mm
• Board Coverage: 0.546m2
• Pack Coverage: 4.37m2
• R-Value: 2.0m2K/W
• Thermal Conductivity: 0.037 W/mK
• Vapour Resistivity: 5.00MNs/g.m.
• Density: 27kg/m3
• Material: Glass Mineral Wool
• Profile: Ultimate Cavity Slab
• Building Regulations: Class '0'
• Fire performance: Euroclass A1 (non-combustible)
• Finish: Unfaced
• Applications: Masonry cavity walls
• ECOSE Technology: Yes
• Features: Non-combustible ǀ Water-repellent
• Manufacturer: Knauf DriTherm®

ADVANTAGES

1. Non-combustible full-fill insulation removes the requirement for cavity barriers, minimising fire risk within the cavity space.
2. BBA certified and water-repellent for use in all exposure conditions, including extremely severe environments.
3. 75mm slabs are precisely sized to fit between wall ties without needing retaining discs.

About

The 75mm Knauf DriTherm 37 Ultimate Cavity Insulation Slab is a water-repellent glass mineral wool product suited for full-fill use in external masonry cavity walls. Delivering a thermal conductivity rating of 0.037W/mK, it provides reliable thermal performance.

This cavity slab combines durability with practical benefits—it's odourless, rot-resistant, non-hygroscopic, and vermin-proof. It also resists fungal, mould, and bacterial growth.

Built with Knauf ECOSE Technology, these Cavity Wall Slabs feature an excellent Euroclass A1 fire rating. BBA certified for all exposure zones including very severe conditions, they're approved for buildings up to 12m in any exposure zone and for taller multi-storey structures up to 25m.

These insulation slabs contain no ozone-depleting substances or greenhouse gases. Knauf Glass and Rock Mineral Wool offers superior ease of installation compared to rigid board alternatives. The Knauf DriTherm Cavity Insulation Slabs conform to substrate variations, bonding together to seal air gaps and prevent thermal bridging.

Durability

The 75mm Knauf DriTherm Slabs are odourless, rot-resistant, non-hygroscopic, vermin-resistant, and prevent the development of fungi, mould, or bacteria.

Application

Engineered for thermal insulation in masonry cavity external walls, 75mm DriTherm Slabs are positioned to fully fill the cavity space. They're approved for buildings up to 12m high in any exposure zone (subject to BBA certification compliance) and suitable for multi-storey applications reaching heights of 25m.

Dritherm Cavity Wall Specifications

Info

Explore our full Knauf Insulation range and refine by thickness or coverage using the left-hand filters. For project-specific advice or bulk pricing enquiries, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the best UK Knauf Cavity Insulation prices.