Soprema SOPRAXPS 500 100mm XPS Board

100mm Soprema SOPRAXPS 500 SL ES is a rigid extruded polystyrene (XPS) thermal insulation board designed for UK construction applications where high compressive strength and durability are critical. Built with climate-friendly CO₂ technology, this 100mm board provides outstanding thermal efficiency and moisture protection in challenging conditions.

Suited to structural floors, car parks, basements and inverted roofs, the 100mm Soprema SOPRAXPS 500 SL ES delivers reliable performance in high load-bearing scenarios with minimum compressive strength of ≥500 kPa, ensuring structural integrity under sustained pressure.

This XPS insulation board incorporates a smooth finish with shiplap (SL) edge profile for secure interlocking, 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 UK and European quality requirements.

Key Benefits

1. Brand: Soprema SOPRAXPS 500 SL ES (Previously Soprema SL)
2. Model: 100mm XPS 500
3. Thickness: 100mm
4. Dimensions: 1,250mm x 600mm x 100mm
5. Board Length: 1250mm
6. Board Width: 600mm
7. Pack of: 4
8. Board Coverage: 0.75m2
9. Pack Coverage: 3.00m2
10. Density: 35kg/m3
11. R-Value: 2.90m2K/W
12. Thermal Conductivity: 0.034 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 delivers excellent thermal performance across multiple thicknesses with low thermal conductivity (approximately 0.036 W/mK), making it a reliable solution for energy-conscious building design.

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

Built to satisfy modern UK building regulations, the 100mm Soprema SOPRAXPS 500 SL ES insulation boards provide exceptional strength, longevity and thermal efficiency for diverse construction and civil engineering applications.

Info

Browse our full range of Soprema XPS insulation products. We deliver throughout the UK Mainland. For project-specific advice, product suitability assessment or bulk pricing enquiries, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use our Live Chat service - Competitive UK Insulation Pricing.