Soprema SOPRAXPS 300 SL FN 140mm XPS Board

140mm Soprema SOPRAXPS 300 SL FN is a premium rigid extruded polystyrene (XPS) insulation board engineered for demanding UK construction projects requiring superior compressive strength and water resistance. Delivering 300kPa compressive strength, this board provides robust thermal insulation for heavy-load applications.

Manufactured to 1250mm x 600mm x 140mm, Soprema SOPRAXPS 300 SL suits diverse commercial, industrial and specialist settings. Common uses encompass solid floors, underground structures, basements, car parks, swimming pools, cold storage, and both flat and pitched roof systems.

Versus standard EPS (expanded polystyrene) insulation, which typically achieves around 70kPa compressive strength, Soprema SOPRAXPS 300 SL FN delivers substantially superior load-bearing capability. This positions it as the preferred insulation board for high-traffic zones and structural applications where robustness and dependability matter most.

Key Benefits

1. Brand: Soprema SOPRAXPS 300 SL FN (Previously Soprema SL)
2. Model: 140mm XPS 300
3. Thickness: 140mm
4. Dimensions: 1,250mm x 600mm x 140mm
5. Board Length: 1250mm
6. Board Width: 600mm
7. Pack of: 3
8. Board Coverage: 0.75m2
9. Pack Coverage: 2.3m2
10. Density: 35kg/m3
11. R-Value: 4.35m2K/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 board incorporates a rebated edge profile to enhance thermal continuity and minimise cold bridging. Its closed-cell XPS composition delivers exceptional water, moisture and frost resistance, maintaining consistent thermal performance in damp or subterranean environments. This 140mm Soprema XPS insulation utilises climate-friendly CO₂ technology, advancing sustainable building practices across the UK.

For inverted roof applications, including zero-fall and flat roofs, 140mm Soprema SOPRAXPS must be installed with ballast to guarantee stability and sustained performance.

Meeting contemporary UK building standards, 140mm Soprema SOPRAXPS 300 SL FN insulation boards deliver exceptional strength, longevity and thermal efficiency for diverse construction and civil engineering schemes.

Info

Explore our full range of Soprema XPS Insulation products. We deliver throughout the UK Mainland. For project-specific product advice or bulk quotations, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Lowest UK Insulation Prices near me.