Isover 125mm Cavity Wall Slab CWS 36 – 4.37m²/Pack
The Isover CWS 36 125mm Cavity Wall Slab is a high-performance glass mineral wool insulation solution, purpose-designed for partial-fill cavity wall applications. Delivering a balance of thermal efficiency, fire safety, and ease of installation, it’s ideal for residential and commercial builds looking to meet or exceed modern insulation standards.
Product Features/Specifications
- Thickness: 125mm
- Coverage: 4.37m² per pack
- Thermal conductivity: 0.036 W/mK
- Pre-cut for easy cavity fit
- Water-repellent and rot-proof
- Euroclass A1 fire rating
Detailed Product Benefits
- Excellent Thermal Performance
- With a low thermal conductivity of 0.036 W/mK, the 125mm slab helps achieve high levels of energy efficiency, reducing heating costs and improving U-values.
- Superior Fire Resistance
- Manufactured from non-combustible glass mineral wool and rated Euroclass A1, it provides the highest standard of fire safety in cavity wall insulation.
- Moisture Resistant & Durable
- Designed to repel water and resist moisture ingress, these slabs retain their insulating properties and will not degrade over time.
- Quick and Easy to Install
- Lightweight and semi-rigid, slabs are pre-sized for standard cavity widths and are easy to fit snugly between wall ties with minimal gaps or thermal bridging.
Applications and Versatility
- Ideal for partial-fill external masonry cavity walls
- Suitable for new builds and retrofit projects
- Compatible with traditional brick and block construction
- Used in housing, commercial and industrial buildings
Features & Benefits List
- Excellent thermal insulation
- Euroclass A1 fire-rated (non-combustible)
- Water-repellent and breathable
- Easy handling and installation
- Improves energy efficiency and compliance
Technical Specifications
- Product: Isover CWS 36
- Thickness: 125mm
- Pack Coverage: 4.37m²
- Slab Dimensions: Approx. 1200mm x 455mm
- Thermal Conductivity: 0.036 W/mK
- Fire Rating: Euroclass A1
Application: Cavity wall insulation (partial fill)
Additional Information
Also available in other thicknesses (50mm to 150mm)
Available for collection or HI-AB delivery from Joseph Parr Bradford
For expert advice or to place your order, contact us at 01274 720227 or [email protected]
