120mm Soprema Sopraxps 500 SL ES XPS board

120mm Soprema Sopraxps 500 SL ES XPS board is a rigid extruded polystyrene (XPS) thermal insulation board engineered for UK construction projects where exceptional compressive strength and long-lasting performance are essential. Manufactured using climate-friendly CO₂ technology, this 120mm soprema XPS board delivers superior thermal efficiency and moisture resistance across demanding environments.

Ideal for structural floors, car parks, basements and inverted roofs, 120mm Soprema SOPRAXPS 500 SL ES supports high load-bearing applications thanks to a minimum compressive strength of ≥500 kPa, maintaining integrity under pressure and ensuring reliable performance over time.

This 120mm xps insulation board features a smooth finish with shiplap (SL) edge profile for tight interlocking, reducing thermal bridging and simplifying installation. With CE marking to BS EN 13164 and compatibility with SOPREMA waterproofing systems, it meets UK and European standards for quality and durability.

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

Available in a range of thicknesses, SOPRAXPS 500 SL ES offers excellent thermal performance with low thermal conductivity (approx. 0.036 W/mK), making it a dependable choice for energy-efficient building design.

Perfect for developers, architects and contractors specifying robust insulation solutions, this XPS board combines strength, moisture resistance and sustainability in one high-performance product.

Designed to meet the needs of modern UK building regulations, 120mm Soprema SOPRAXPS 500 500 SL ES insulation boards offer outstanding strength, durability and thermal efficiency across a wide range of construction and civil engineering projects.

Info

Have a browse of our Soprema XPS Insulation products. We supply to the entire UK Mainland. If you’d like to talk through the suitability of some products for your project, or get a quantity discount quotation please call us by phone on 02039519012 / 02038839057, email sales@insulationstoreonline.co.uk or Live Chat - Lowest UK Insulation Prices near me.