120mm Soprema SOPRAXPS 700 SL XPS Board

The 120mm Soprema SOPRAXPS 700 SL ES is a rigid extruded polystyrene (XPS) insulation board engineered for demanding UK construction applications requiring superior thermal performance and durability. Manufactured using environmentally responsible CO₂ technology, this closed-cell XPS board delivers exceptional moisture resistance and sustained thermal efficiency in harsh environments.

Ideal for structural floors, basement applications, car park structures, and inverted roof systems, the 120mm Soprema XPS board achieves a minimum compressive strength of ≥700 kPa, enabling it to support substantial loads whilst preserving structural integrity throughout its service life.

The smooth surface with shiplap (SL) edge profile facilitates secure interlocking between boards, minimises thermal bridging, and streamlines the installation process. Fully CE marked in accordance with BS EN 13164 and compatible with SOPREMA waterproofing solutions, this product satisfies rigorous UK and European building standards.

Specify 120mm Soprema SOPRAXPS 700 XPS insulation for projects demanding proven strength, thermal efficiency, and long-term reliability.

Key Benefits

1. Brand: Soprema SOPRAXPS 700 SL ES (Previously Soprema SL)
2. Model: 120mm XPS 700
3. Thickness: 120mm
4. Weight: 12.00kg
5. Dimensions: 1,250mm x 600mm x 120mm
6. Board Length: 1250mm
7. Board Width: 600mm
8. Pack of: 3
9. Board Coverage: 0.75m2
10. Pack Coverage: 2.3m2
11. Density: 35kg/m3
12. R-Value: 3.40m2K/W
13. Thermal Conductivity: 0.035 W/mK
14. Compressive Strength: 700kPa
15. Material: Extruded Polystyrene
16. Edge Profile: Rebated edge
17. Surface: Smooth
18. Reacting to fire: E
19. Applications: Garage, Car parks, Roof, Floor, Basement
20. Features: High quality ǀ Waterproof ǀ Rigid XPS
21. Manufacturer: SOPREMA

Key Features

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

The SOPRAXPS 700 SL ES range delivers excellent thermal performance with low thermal conductivity (approximately 0.036 W/mK), making it an effective solution for energy-conscious building design across multiple thicknesses.

Suited to developers, architects and contractors seeking dependable insulation specifications, this XPS board integrates strength, moisture protection and environmental responsibility into a single high-performance solution.

Engineered to satisfy contemporary UK building regulations, 120mm Soprema SOPRAXPS 700 SL ES insulation boards deliver exceptional load-bearing capacity, extended service life and thermal efficiency for diverse construction and civil engineering applications.

Info

Browse our complete Soprema XPS Insulation range. We deliver throughout the UK Mainland. To discuss product suitability for your project or request a volume discount quotation, contact us by phone on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat for competitive UK insulation pricing.