Sopratherm TB4020 20mm PIR Insulation Board

20mm Sopratherm TB4020 PIR Insulation Board (formerly Celotex TB4000) is a premium polyisocyanurate (PIR) rigid insulation solution engineered for diverse building applications. Delivering a thermal conductivity of 0.022 W/mK, this high-performance board significantly reduces heat loss and enhances building energy efficiency.

Manufactured by Soprema with aluminium foil facings on both sides, the 20mm SOPRATHERM insulation boards provide superior thermal performance and effective vapour control when properly installed.

Available in thicknesses ranging from 20mm to 40mm, this product carries BBA certification (Certificate 25/7318) for multiple applications:

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

Pack Size & Coverage

1. Brand: Soprema
2. Product Range: SOPRATHERM TB4020 (formerly Celotex TB4000)
3. Thickness: 20mm
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): 0.90 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 TB4020 Applications

This versatile rigid board suits numerous construction scenarios. Its straightforward cutting and installation characteristics make it ideal for multiple uses. Standard applications for the 20mm Sopratherm 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, validating product suitability for specified construction systems when installed according to manufacturer requirements.

Fire Performance

SOPRATHERM TB4020 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 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

Browse our complete Sopratherm insulation range. We deliver across the UK Mainland. For product suitability advice on your project or to request a bulk discount quotation, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Competitive UK Insulation Pricing.