120mm Soprema SOPRAXPS 500 SL ES XPS Board

120mm Soprema SOPRAXPS 500 SL ES is a rigid extruded polystyrene (XPS) thermal insulation board specifically engineered for demanding UK construction applications where superior compressive strength and extended durability are required. This 120mm XPS board utilises climate-friendly CO₂ manufacturing technology to deliver outstanding thermal efficiency and moisture resistance in challenging conditions.

Suited to structural floors, car parks, basements and inverted roofs, the 120mm Soprema SOPRAXPS 500 SL ES handles high load-bearing requirements effectively, with a minimum compressive strength of ≥500 kPa that maintains structural integrity under sustained pressure and guarantees reliable long-term performance.

This XPS insulation board incorporates a smooth finish with shiplap (SL) edge profile for secure interlocking between boards, minimising thermal bridging and streamlining the installation process. Certified to BS EN 13164 with CE marking and fully compatible with SOPREMA waterproofing systems, it satisfies all UK and European quality and durability requirements.

Key Benefits

1. Brand: Soprema SOPRAXPS 500 SL ES (Previously Soprema SL)
2. Model: 120mm XPS 500
3. Thickness: 120mm
4. Dimensions: 1,250mm x 600mm x 120mm
5. Board Length: 1250mm
6. Board Width: 600mm
7. Pack of: 3
8. Board Coverage: 0.75m2
9. Pack Coverage: 2.30m2
10. Density: 35kg/m3
11. R-Value: 3.40m2K/W
12. Thermal Conductivity: 0.035 W/mK
13. Compressive Strength: 500kPa
14. Material: Extruded Polystyrene
15. Edge Profile: Rebated edge
16. Surface: Smooth
17. Reacting to fire: E
18. Applications: Garage, Car parks, Roof, Floor, Basement
19. Features: High quality ǀ Waterproof ǀ Rigid XPS
20. Manufacturer: SOPREMA

Key Features

• Moisture-Resistant
• Shiplap (SL) Edges
• High Compressive Strength
• Closed-Cell XPS Foam Core

The SOPRAXPS 500 SL ES range is available in multiple thicknesses, delivering exceptional thermal performance with low thermal conductivity (approximately 0.036 W/mK), making it an excellent option for energy-efficient building design.

Ideal for developers, architects and contractors seeking dependable insulation solutions, this XPS board combines strength, moisture resistance and environmental responsibility in a single high-performance product.

Built to satisfy modern UK building regulations, the 120mm Soprema SOPRAXPS 500 SL ES insulation boards provide exceptional strength, durability and thermal efficiency for diverse construction and civil engineering applications.

Info

Browse our full range of Soprema XPS insulation products. We deliver across the UK Mainland. To discuss product suitability for your project or request a quantity discount quotation, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat for competitive UK insulation pricing.