125mm Isover Cavity Wall Slab (CWS) 36 delivers exceptional thermal performance for external masonry cavity walls. These glass mineral wool slabs feature a water-repellent binder and measure 455mm wide to align perfectly with standard wall tie spacing, ensuring reliable installation.

Product specification

• Model: 125mm Isover Cavity Wall Insulation
• Thickness: 125mm
• Width: 455mm
• Length: 1200mm
• Pack Quantity: 8
• Pack Coverage: 4.37m2
• Density: 24kg/m3
• Weight/m2: 2.4kg
• Weight: 10.48kg
• Thermal Conductivity: 0.036W/mK
• R-Value: 3.45m2K/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: Boasting a thermal conductivity of 0.036 W/m.K, this product significantly minimises heat loss through the building envelope, delivering substantial energy savings.
• Sustainability: Crafted from up to 82% recycled glass and produced in facilities powered entirely by renewable electricity.
• BBA Certified: This 125mm cavity wall slab holds BBA certification for both full fill and partial fill masonry cavity wall applications when properly installed and maintained according to certification requirements.
• Fire Classification: Meets Euroclass A1 Reaction to Fire standards under EN 13501-1.
• Easy to Install: The 455mm width accommodates standard wall tie spacing, enabling quick installation without retaining discs when fully filling the cavity.

Key Considerations

When installing 125mm Isover Cavity Wall Insulation, verify compliance with all relevant national building regulations, guidelines, and applicable standards for your specific project. This includes meeting fire safety requirements and adhering to any applicable height restrictions.

Thermal

Declared thermal conductivity of 0.036 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 36

• Manufaturer Link: 125mm isover cws 36
• Browse our comprehensive Isover Insulation range and refine by thickness or coverage using the filters on the left. For product suitability advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee or use Live Chat – best UK Isover Insulation prices available.