Isover CWS32 Cavity Wall Insulation Slabs

CWS32 is a high performance glass mineral wool cavity wall insulation slab designed for full fill or partial fill external masonry cavity walls. eWith excellent thermal efficiency and a Euroclass A1 non-combustible fire rating, it’s an ideal solution for both residential and commercial construction projects. Manufactured from up to 82% recycled glass and using 100% renewable electricity, it supports sustainable building goals.

Slabs are 455mm wide to fit standard wall tie spacing for straightforward installation. No requirement for retaining discs when fully filling the cavity.

Thermal conductivity of 0.032 W/m.K. Helps to reduce heat loss within the building envelope and as a result decreases energy costs.

Click here to download the product datasheet

Key Features:

• Outstanding thermal performance – thermal conductivity of 0.032 W/m·K

• Non-combustible – Euroclass A1 fire rating

• BBA Certified – certificate number 18/5560

• Water-repellent binder resists moisture absorption

• 455mm width fits standard wall tie spacing, no retaining discs needed

• Up to 82% recycled glass content

• Manufactured using 100% renewable electricity

• A+ BRE Green Guide rating – contributes to BREEAM credits

Applications:

• Full-fill masonry cavity walls

• Partial-fill masonry cavity walls

• Suitable for domestic, commercial, and new build projects

Available Thicknesses and Pack Size

• 100mm – 6 slabs per pack – 3.28m2 – Isover SKU 5200625463

• 125mm – 5 slabs per pack – 2.73m2 – Isover SKU 5200619452

• 150mm – 4 slabs per pack – 2.18m2 – Isover SKU 5200619455

Technical Specifications:

• Material: Glass Mineral Wool

• Dimensions: 1200mm (length) x 455mm (width)

• Thermal Conductivity: 0.032 W/m·K

• Fire Rating: Euroclass A1

• Certification: BBA Approved (Cert No. 18/5560)

• Sustainability: Up to 82% recycled glass, 100% renewable electricity used in production