Celotex CW4000 Cavity Wall Insulation Board – 450mm x 1200mm – Insulation Marketplace

Product Specifications

• Material: Polyisocyanurate (PIR) foam core with low emissivity aluminium foil facing.
• Dimensions: 1200mm (length) x 450mm (width).
• Thickness Options: Available in a range of thicknesses, including 50mm, 75mm, and 100mm​​​​.
• Lambda Value (Thermal Conductivity): 0.022 W/m.K.
• R-Value (Thermal Resistance): Varies by thickness; for example, 2.25 m².K/W for 50mm thickness and 4.50 m².K/W for 100mm thickness​​.
• Fire Classification: Euroclass F Reaction to Fire classification, according to BS EN 13501-1​​.
• Maximum Weight: Varies based on thickness; for instance, 2.26 kg/m2 for 50mm thickness​​.

Key Features

• Excellent Thermal Performance: Helps reduce the thickness of insulation required to achieve target U-values.
• High-Performance Facer: Low emissivity foil facing enhances thermal performance in sealed cavity air spaces.
• Easy Installation: Lightweight and rigid for easy handling and fitting, sized to fit standard wall tie spacing.
• BBA Certified: Assessed as fit for use in defined partial fill cavity wall applications.
• Sustainability: Achieves a BRE Green Guide Rating of A, indicating good environmental performance.

Installation Guide

1. Wall Tie Placement: Install wall ties at specific intervals and heights as per construction requirements.
2. Board Installation: Fit the insulation boards between the wall ties, ensuring they are tightly against the inner leaf with joints butted closely.
3. Sealing: Apply self-adhesive breathable tape to all joints and interfaces for effective insulation and moisture management.
4. Outer Leaf Construction: Build the outer leaf to the level of the top of the insulation boards and repeat the process for subsequent layers​​.

Applications

• Partial Fill Cavity Wall Insulation: Ideal for use in new buildings and extensions, fitting in the cavity space between the inner and outer layers of walls.

Celotex CW4000 is designed for effective thermal insulation in cavity wall applications, offering easy installation and robust performance. Its range of thicknesses provides flexibility for various building requirements.

– Celotex CW4000 Cavity Wall Insulation Board – 450mm x 1200mm – Insulation Marketplace