Description
Celotex CW4100 Cavity Wall Insulation Board is a high-performance rigid PIR solution designed for partial fill insulation in masonry cavity walls. Each board is sized to fit standard wall tie spacing, making installation quick, accurate, and hassle-free without the need for cutting.
With a low thermal conductivity of just 0.022 W/mK and low emissivity foil facings, CW4000 delivers excellent thermal efficiency and long-term energy savings. Suitable for both new builds and refurbishment projects, it provides an easy way to achieve impressive U-values and meet current Building Regulation requirements.
Key Benefits
- High-performance rigid PIR cavity wall insulation
- Pre-sized to fit standard wall tie spacing — no cutting required
- Excellent thermal conductivity: 0.022 W/mK
- Foil facings enhance insulation performance in cavity air spaces
- Lightweight, easy to handle, and quick to install
- Long-term energy savings and reduced carbon emissions
- BBA certified and BRE Green Guide Rating of A for sustainability
Product Specifications
- Dimensions: 1200mm x 450mm
- Material: Rigid PIR with foil facings
- Thermal Conductivity: 0.022 W/mK
- R-Value: 4.50 m²K/W
- Compressive Strength: CS(10\Y)120 kPa
- Weight: 3.65kg/m² (max)
- Fire Classification: Euroclass F (BS EN 13501-1)
Applications
- Partial fill insulation in masonry cavity walls
- Suitable for new builds, extensions, and refurbishment projects
Certification
- BBA certified
- BRE Green Guide Rating: A for sustainability
- Conforms to BS EN 13165 (factory-made rigid polyurethane foam)
Celotex Cavity Wall Insulation Board 1200mm x 450mm