Knauf DriTherm 32 75mm Cavity Insulation Slab

75mm Knauf DriTherm 32 Cavity Insulation Slabs are water-repellent Glass Mineral Wool slabs engineered for full-fill applications in masonry cavity walls. Delivering excellent thermal performance across various construction projects, these slabs are non-combustible and achieve the premium Euroclass A1 fire rating. Made with Knauf Insulation ECOSE® Technology bio-based binder for superior environmental credentials.

Product specification

• Brand: Knauf®
• Model: DriTherm 32 - 75mm
• Thickness: 75mm
• Length: 1200mm
• Width: 455mm
• Dimensions: 1,200mm x 455mm x 75mm
• Board Coverage: 0.546m2
• Pack Coverage: 3.28m2
• R-Value: 2.30m2K/W
• Thermal Conductivity: 0.032 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, substantially lowering fire spread risk within the cavity space.
2. BBA-certified and water-repellent, approved for all exposure conditions including extremely harsh coastal and industrial zones.
3. 75mm slabs are precisely sized to fit between wall ties without needing retaining discs, streamlining installation.

About

The 75mm Knauf DriTherm 32 Ultimate Cavity Insulation Slab provides water-repellent glass mineral wool insulation for complete-fill use in external masonry cavity walls. Boasting a verified thermal conductivity rating of 0.032W/mK, it delivers dependable thermal protection.

This 75mm DriTherm 32 Cavity Slab combines durability with practical benefits—it's odourless, rot-resistant, non-hygroscopic, and vermin-proof. The material actively resists fungal, mould, and bacterial colonisation.

Built using Knauf ECOSE Technology, these Cavity Wall Slabs deliver an outstanding Euroclass A1 fire classification. Holding BBA certification for all exposure zones including severe maritime areas, they're permitted in buildings up to 12m across any exposure zone and in multi-storey structures reaching 25m.

These insulation slabs are free from ozone-depleting substances and greenhouse gases. Knauf Glass and Rock Mineral Wool offer superior ease of fit compared to rigid alternatives. The Knauf Earthwool Cavity Insulation Slabs conform to uneven surfaces, 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 inhibit the development of fungi, mould, and bacteria.

Application

Intended for thermal insulation in masonry cavity external walls, 75mm DriTherm Slabs are positioned to fully fill the cavity. They're approved for buildings up to 12m in any exposure zone (subject to BBA certification compliance) and work well in multi-storey projects up to 25m in height.

Dritherm Cavity Wall Specifications

Info

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