Soprema SOPRAXPS 300 SL FN 80mm XPS Board

80mm Soprema SOPRAXPS 300 SL FN XPS Board delivers rigid extruded polystyrene insulation engineered for demanding UK construction projects requiring superior compressive strength and water resistance. Rated at 300kPa compressive strength, this board provides robust thermal protection in high-load applications.

Measuring 1250mm x 600mm x 80mm, Soprema SOPRAXPS 300 SL suits commercial, industrial and specialist building work. Common uses include solid floor systems, underground structures, basement areas, car park decking, swimming pool installations, chilled storage, and both flat and sloped roof assemblies.

Where standard EPS insulation typically achieves around 70kPa, Soprema SOPRAXPS 300 SL FN substantially exceeds this performance. The enhanced load-bearing capacity makes it particularly suited to high-traffic zones and load-bearing applications where durability and strength matter.

Key Benefits

1. Brand: Soprema SOPRAXPS 300 SL FN (Previously Soprema SL)
2. Model: 80mm XPS 300
3. Thickness: 80mm
4. Weight: 12.00kg
5. Dimensions: 1,250mm x 600mm x 80mm
6. Board Length: 1250mm
7. Board Width: 600mm
8. Pack of: 5
9. Board Coverage: 0.75m2
10. Pack Coverage: 3.8m2
11. Weight: 12kg
12. Density: 35kg/m3
13. R-Value: 2.50m2K/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 rebated edge design enhances thermal continuity and minimises thermal bridging effects. Its closed-cell XPS composition resists water penetration, moisture absorption and frost damage, maintaining consistent thermal performance in wet or subterranean environments. This 80mm Soprema XPS board is manufactured using climate-friendly CO₂ technology, supporting sustainable building practices across the UK.

For inverted roof applications, including zero-fall and flat roof systems, 80mm Soprema SOPRAXPS must be secured with ballast to guarantee stability and sustained performance.

Built to comply with current UK building standards, 80mm Soprema SOPRAXPS 300 SL FN insulation boards combine exceptional strength, longevity and thermal efficiency for diverse construction and civil engineering applications.

Info

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