180mm Soprema SOPRAXPS 300 SL FN XPS Board

180mm Soprema SOPRAXPS 300 SL FN is a premium rigid extruded polystyrene (XPS) insulation board engineered for demanding UK construction projects requiring exceptional compressive strength and water resistance. Delivering 300kPa compressive strength, this board provides robust thermal protection in heavy-load applications.

Manufactured to 1250mm x 600mm x 180mm dimensions, Soprema XPS 300 SL performs across diverse commercial, industrial and specialist settings. Common uses span solid floors, underground work, basements, car parks, swimming pools, cold storage, and both flat and pitched roof configurations.

Versus standard EPS (expanded polystyrene) at roughly 70kPa compressive strength, Soprema SOPRAXPS 300 SL FN delivers substantially superior load-bearing capacity. This positions it as the preferred choice for high-traffic zones and structural applications where performance and dependability matter most.

Key Benefits

1. Brand: Soprema SOPRAXPS 300 SL FN (Previously Soprema SL)
2. Model: 180mm XPS 300
3. Thickness: 180mm
4. Dimensions: 1,250mm x 600mm x 180mm
5. Board Length: 1250mm
6. Board Width: 600mm
7. Pack of: 2
8. Board Coverage: 0.75m2
9. Pack Coverage: 1.5m2
10. Density: 35kg/m3
11. R-Value: 5.6m2K/W
12. Thermal Conductivity: 0.032 W/mK
13. Compressive Strength: 300kPa
14. Material: Extruded Polystyrene
15. Edge Profile: Rebated edge
16. Surface: Smooth
17. Reacting to fire: F
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 rebated edge design enhances thermal continuity and minimises cold bridging effects. Its closed-cell XPS structure delivers superior water, moisture and frost resistance, maintaining consistent thermal performance in wet or subterranean environments. This 180mm Soprema XPS insulation utilises climate-friendly CO₂ technology, supporting sustainable building practices across the UK.

For inverted roof applications, including zero-fall and flat roof systems, 180mm Soprema SOPRAXPS requires ballast installation to guarantee stability and sustained performance.

Meeting contemporary UK building standards, 180mm Soprema SOPRAXPS 300 SL FN insulation boards combine 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 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.