Sopratherm XR4140 140mm PIR Insulation Board

140mm Sopratherm XR4140 PIR Insulation Board (formerly Celotex XR4000) is a premium polyisocyanurate (PIR) rigid insulation solution engineered for diverse building applications. Offering a thermal conductivity rating of 0.022 W/mK, this high-performance board provides outstanding thermal resistance whilst minimising heat transfer and enhancing building energy efficiency.

Manufactured by Soprema, the 140mm SOPRATHERM insulation boards feature aluminium foil facings on both surfaces. These low-emissivity facings optimise thermal performance and function as an effective vapour control layer when properly installed.

This 140mm thickness option carries BBA certification (Certificate 25/7318) for multiple applications, including:

1. Pitched roof insulation
2. Internal dry lining systems
3. Floor insulation

Pack Size & Coverage

1. Brand: Soprema
2. Product Range: SOPRATHERM XR4140 (formerly Celotex XR4000)
3. Thickness: 140mm
4. Dimensions: 2400 × 1200 mm
5. Board Length: 2400mm
6. Board Width: 1200mm
7. Board Coverage: 2.88m2
8. Pieces Per Pack: 1
9. Thermal Conductivity: 0.022W/mK
10. Thermal resistance (Rd): 6.35 m².K/W
11. Compressive Strength: 120 kPa
12. Density: 31kg/m3
13. Fire Rating: Euroclass F
14. Material: PIR
15. Finishing top: Alu-kraft
16. Finishing bottom: Alu-kraft
17. Edge Profile: Straight
18. Facing: Low Emissivity Foil
19. Aluminium foil surface emissivity: 0.05
20. Weight (kg/m2): 0.79kg/m2
21. BBA certified: Certificate 25/7318 (Pitched Roof, Dry Lining, Floor Insulation)

Sopratherm XR4140 Applications

The 140mm SOPRATHERM board is a versatile, multi-purpose insulation solution suitable for numerous construction scenarios. These boards are straightforward to cut and fit on site. Common applications for this 140mm thickness include:

1. Concrete Slab (Ground Floor)
2. Suspended Timber Joist (Ground Floor)
3. Beam and Block (Ground Floor)
4. Upgrading Existing Concrete Slab (Ground Floor)
5. Timber Frame Internal Linings (External Wall)
6. Timber Frame Sheathing (External Wall)
7. Between Timber Frame Studs (External Wall)
8. Solid Masonry Internal Linings (External Wall)
9. Over Timber Rafters (Pitched Roof)
10. Sarking (Pitched Roof)
11. Below Timber Rafters (Pitched Roof)
12. Between Timber Rafters (Pitched Roof)
13. Loft Insulation – Between and Over Timber Joists (Pitched Roof)
14. Balconies & Terraces Over Joists (Flat Roof)
15. Between Timber Joists (Flat Roof)
16. Below Timber Joists (Flat Roof)

All applications listed are covered under BBA Certificate 25/7318, verifying product suitability for specified construction systems when installed according to manufacturer guidance.

Fire Performance

SOPRATHERM XR4140 achieves Euroclass F classification under BS EN 13501-1 fire testing standards.

Under current UK Building Regulations on combustibility, this product cannot be used in the external walls of relevant buildings exceeding 11 metres in height.

Compliance and Installation

SOPRATHERM PIR insulation boards must be specified, installed and detailed in line with:

• UK Building Regulations
• Relevant statutory guidance
• Applicable British Standards
• The manufacturer's installation instructions

Proper specification and installation guarantee the insulation functions effectively within the building structure and satisfies all regulatory requirements.

Info

Explore our full range of Sopratherm Insulation products. We deliver across the entire UK Mainland. For advice on product suitability for your specific project, or to request a quantity discount quotation, please contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use our Live Chat service.