Soprema SOPRATHERM CW4085 85mm PIR

85mm Soprema SOPRATHERM CW4085 (previously Celotex CW4000) delivers high-performance thermal insulation for cavity wall applications. This PIR insulation board features a thermal conductivity rating of 0.022 W/mK and aluminium foil facing for enhanced thermal efficiency. BBA certified for partial fill cavity wall installations (Certificate 24/7312), it's available in thicknesses ranging from 50mm to 100mm.

Pack Size & Coverage

1. Brand: Soprema CW4000
2. Model: 85mm SOPRATHERM CW4085 (previously Celotex CW4085)
3. Thickness: 85mm
4. Length: 1200mm
5. Width: 450mm
6. Pack quantity: 7
7. Board Coverage: 0.54m2
8. Pack Coverage: 3.78m2
9. R-Value: 3.85m2K/W
10. Thermal Conductivity: 0.022 W/mk
11. Density: 30Kg/m3
12. Edge profile: Straight edge
13. Vapour Resistivity: 100 MNs/gm
14. Building Regulations: Compliant
15. Material: PIR
16. Finishing top: Alu-kraft
17. Finishing bottom: Alu-kraft
18. Shipping method: Articulated Vehicle
19. Applications: Cavity Walls ǀ Masonry Walls | 85mm Partial fill insulation
20. BBA Certified: Yes (no. 16/5343)
21. Features: High-performance Cavity Wall Board

This PIR board is engineered to align with standard cavity wall tie spacing, eliminating the need for cutting during most installations. This design approach streamlines the installation process and reduces labour time on-site.

When properly installed, Soprema CW4085 insulation supports buildings in achieving UK Building Regulations compliance for energy efficiency and carbon reduction targets. The product carries BBA certification from the British Board of Agrément, confirming its reliability and thermal performance standards.

Benefits

1. Declared Thermal Conductivity (λD): 0.022 W/mK
2. Nominal Board Dimensions: 2400 x 1200 mm
3. Thickness Range: 40 mm to 100 mm
4. Edge Profile: Straight
5. Aluminium Foil Surface Emissivity: 0.05
6. BBA Certified: Certificate 25/7312 (Partial Fill Cavity Walls)

Application

• Primary Application: Partial-Fill Cavity Walls: 85mm Soprema CW4000 is positioned against the inner masonry leaf, maintaining a standard 50 mm air gap to the outer leaf.
• New Build & Refurbishment: Ideal for new masonry buildings and enhancing thermal performance in existing cavity wall structures.

Reaction to fire

• 85mm SOPRATHERM CW4000 PIR insulation board achieves a Euroclass F reaction to fire rating per BS EN 13501-1.
• Under current UK Building Regulations regarding combustibility, this product cannot be used in external walls of buildings exceeding 11 m in height.
• Verify that 80mm CW4000 is selected and fitted in accordance with all applicable Building Regulations, statutory guidance, and relevant standards.

Standards & Certification

• Thermal conductivity: 0.022W/mK, in accordance with BS EN 13165 for factory-manufactured rigid polyurethane foam (PU) products
• Spread of flame: Euroclass F Reaction to Fire classification, per BS EN 13501-1. Products at this classification level do not receive a smoke emission rating.
• BRE Green Guide Rating: A
• Certification: BBA certified

Info

Explore our complete range of Sopratherm insulation solutions. We deliver throughout the UK Mainland. To discuss product suitability for your project or request a bulk discount quotation, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat for the best UK insulation prices.