125mm Isover Cavity Wall Slab (CWS) 32 is a premium glass mineral wool slab engineered to deliver outstanding thermal performance in external masonry cavity walls. These robust, flexible slabs feature a water-repellent binder and measure 455mm wide to align perfectly with standard wall tie spacing.

Product specification

• Model: 125mm Isover Cavity Wall Insulation
• Thickness: 125mm
• Width: 455mm
• Length: 1200mm
• Pack Quantity: 5
• Pack Coverage: 2.73 m2
• Density: 48kg/m3
• Weight: 16.38kg
• Thermal Conductivity: 0.032W/mK
• R-Value: 3.19m2K/W
• Fire Rating (Reaction to Fire): A1(Non-combustible)
• Type: Glass mineral wool slab
• Application: External masonry cavity walls
• Brand: Isover

Product Features

1. 1200 x 455mm mineral wool insulation slab
2. Manufactured from up to 82% recycled glass
3. Manufactured with a water repellent binder
4. BBA approved – certificate 18/5560

Product Benefits

• Thermal Performance: Delivering a thermal conductivity rating of 0.032 W/m.K, this slab significantly reduces heat loss through your building envelope, helping you achieve lower energy consumption and reduced heating bills.
• Sustainability: Made from up to 82% recycled glass and produced in facilities powered entirely by renewable electricity sources.
• BBA Certified: This 125mm Cavity Wall Slab (CWS) 32 holds full BBA certification for both full fill and partial fill masonry cavity wall applications when properly installed and maintained in accordance with certification requirements.
• Fire Classification: Meets Euroclass A1 Reaction to Fire classification under EN 13501-1 standards.
• Easy to Install: The 455mm width aligns with standard wall tie spacing, enabling quick, efficient installation without requiring retaining discs for full cavity applications.

Key Considerations

When installing 125mm Isover Cavity Wall Insulation, verify compliance with all relevant building regulations, national standards, and local requirements applicable to your project. Pay particular attention to fire safety regulations and height-related restrictions.

Thermal

Declared thermal conductivity of 0.032 W/m.K under EN 13162: Thermal insulation products for buildings. Factory made mineral wool (MW) products.

Fire

Euroclass A1 Reaction to Fire Insulation classification according to EN 13501-1.

Environmental

All Isover products are manufactured under Environmental Management System – ISO 14001:2015.

Recycled

Content Manufactured from up to 82% recycled glass.

Certification

• UKCA Marked to BS EN 13162.
• CE Marked to EN 13162.
• Designation code: MW-EN 13162-T4-WS.

BBA Approved

(Cert No: 18/5560) for full fill and partial fill masonry cavity wall insulation board applications when installed, used and maintained as set out in the certification. details and restrictions.

Quality

All Isover products are manufactured under Quality Management Standard – ISO 9001.

More Information on 125mm Isover Cavity Wall Slab CWS 32

• Manufaturer Link: 125mm isover CWS 32
• Browse our comprehensive range of Isover Insulation products and refine your selection by thickness or coverage area using the filters on the left. For expert advice on product suitability for your specific project, or to request a bulk discount quotation, contact us on +4402038839057, email sales@insulationbee or use our Live Chat service – we offer the best value Isover Insulation pricing in the UK.