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From $27.56
Original: $78.74
-65%Sopratherm Cavity Wall Insulation Board 1200mm x 450mm—
$78.74
$27.56The Story
Sopratherm Cavity Wall Insulation Board, formerly known as Celotex CW4100, is a high-performance rigid PIR insulation board designed for partial fill insulation in masonry cavity walls. Previously a popular Celotex product, this board continues to offer a practical and efficient solution for improving thermal performance in both new build and refurbishment projects.
Each board is sized at 1200mm x 450mm, making it suitable for standard wall tie spacing and helping reduce the need for cutting on site. With low emissivity foil facings and strong thermal performance, Sopratherm Cavity Wall Insulation Board helps reduce heat loss, improve energy efficiency, and support compliance with current Building Regulation requirements.
Key Benefits
• Formerly known as Celotex CW4100
• Popular rigid PIR cavity wall insulation board
• Designed for partial fill insulation in masonry cavity walls
• Pre-sized to suit standard wall tie spacing
• Helps reduce cutting and speed up installation
• Low emissivity foil facings support thermal performance in cavity air spaces
• Lightweight and easy to handle on site
• Suitable for new builds, extensions, and refurbishment projects
• Helps improve U-values and reduce heat loss
Product Specifications
• Dimensions: 1200mm x 450mm
• Material: Rigid PIR insulation 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 to BS EN 13501-1
• Application: Partial fill masonry cavity wall insulation
Applications
• Partial fill insulation in masonry cavity walls
• New build cavity wall construction
• House extensions
• Refurbishment projects requiring improved wall insulation
• Projects requiring high-performance PIR insulation within cavity walls
Certification
• BBA certified
• BRE Green Guide Rating: A
• Conforms to BS EN 13165 for factory-made rigid polyurethane foam products
Description
Sopratherm Cavity Wall Insulation Board, formerly known as Celotex CW4100, is a high-performance rigid PIR insulation board designed for partial fill insulation in masonry cavity walls. Previously a popular Celotex product, this board continues to offer a practical and efficient solution for improving thermal performance in both new build and refurbishment projects.
Each board is sized at 1200mm x 450mm, making it suitable for standard wall tie spacing and helping reduce the need for cutting on site. With low emissivity foil facings and strong thermal performance, Sopratherm Cavity Wall Insulation Board helps reduce heat loss, improve energy efficiency, and support compliance with current Building Regulation requirements.
Key Benefits
• Formerly known as Celotex CW4100
• Popular rigid PIR cavity wall insulation board
• Designed for partial fill insulation in masonry cavity walls
• Pre-sized to suit standard wall tie spacing
• Helps reduce cutting and speed up installation
• Low emissivity foil facings support thermal performance in cavity air spaces
• Lightweight and easy to handle on site
• Suitable for new builds, extensions, and refurbishment projects
• Helps improve U-values and reduce heat loss
Product Specifications
• Dimensions: 1200mm x 450mm
• Material: Rigid PIR insulation 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 to BS EN 13501-1
• Application: Partial fill masonry cavity wall insulation
Applications
• Partial fill insulation in masonry cavity walls
• New build cavity wall construction
• House extensions
• Refurbishment projects requiring improved wall insulation
• Projects requiring high-performance PIR insulation within cavity walls
Certification
• BBA certified
• BRE Green Guide Rating: A
• Conforms to BS EN 13165 for factory-made rigid polyurethane foam products
