50mm Soprema SOPRAXPS 300 SL FN XPS Board

50mm Soprema SOPRAXPS 300 SL FN is a premium rigid extruded polystyrene (XPS) insulation board engineered for demanding UK construction projects where superior load-bearing capacity and water resistance are paramount. Delivering 300kPa compressive strength, it provides reliable thermal insulation performance under substantial structural loads.

Manufactured at 1250mm x 600mm x 50mm, this Soprema XPS 300 SL board suits diverse commercial, industrial and specialist applications. Typical uses encompass solid floors, underground structures, basements, car parks, swimming pools, cold storage areas, and both flat and pitched roof configurations.

In contrast to standard EPS (expanded polystyrene) insulation, which typically achieves around 70kPa compressive strength, Soprema SOPRAXPS 300 SL FN provides substantially greater load-bearing performance. This positions it as an excellent choice for high-traffic zones and structural applications demanding proven strength and dependability.

Key Benefits

1. Brand: Soprema SOPRAXPS 300 SL FN (Previously Soprema SL)
2. Model: 50mm XPS 300
3. Thickness: 50mm
4. Weight: 12.00kg
5. Dimensions: 1,250mm x 600mm x 50mm
6. Board Length: 1250mm
7. Board Width: 600mm
8. Pack of: 8
9. Board Coverage: 0.75m2
10. Pack Coverage: 6m2
11. Weight: 12kg
12. Density: 35kg/m3
13. R-Value: 1.55m2K/W
14. Thermal Conductivity: 0.032 W/mK
15. Compressive Strength: 300kPa
16. Material: Extruded Polystyrene
17. Edge Profile: Rebated edge
18. Surface: Smooth
19. Reacting to fire: F
20. Applications: Garage, Car parks, Roof, Floor, Basement
21. Features: High quality ǀ Waterproof ǀ Rigid XPS
22. Manufacturer: SOPREMA

Key Features

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

The board incorporates a rebated edge design that enhances thermal continuity and minimises cold bridging effects. Its closed-cell XPS composition delivers outstanding water, moisture and frost resistance, maintaining consistent thermal performance in damp or subterranean environments. This 50mm Soprema XPS insulation is produced using climate-friendly CO₂ technology, promoting sustainable construction methods across the UK.

For inverted roof applications, including zero-fall and flat roofs, 50mm Soprema SOPRAXPS must be installed with ballast to guarantee stability and sustained performance.

Engineered to satisfy contemporary UK building standards, 50mm Soprema SOPRAXPS 300 SL FN insulation boards deliver exceptional strength, longevity and thermal efficiency for diverse construction and civil engineering applications.

Info

Browse our full Soprema XPS Insulation range. We service the entire UK Mainland. For project-specific product guidance or bulk quotations, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Competitive UK Insulation Pricing Available.