75mm Ravatherm XPS 300 SB Extruded Polystyrene

75mm Ravatherm XPS 300 SB is a robust extruded polystyrene thermal insulation board featuring a butt-edge profile, engineered for challenging construction environments. This board achieves outstanding thermal performance with a declared thermal conductivity of 0.030 W/mK for thicknesses up to 120mm, and 0.031 W/mK above this threshold, supporting compliance with UK Building Regulations and energy efficiency standards.

Built with environmental considerations, 75mm Ravatherm 300 SB carries a Global Warming Potential (GWP) rating below 5, positioning it as a greener insulation alternative.

Its exceptionally low water absorption rate, verified to BS EN 12087:2013, makes this extruded polystyrene board particularly suitable for below DPC cavity wall insulation and other applications demanding moisture resistance.

Ravatherm XPS 300 SB boards come in thicknesses spanning 30mm through to 200mm, providing adaptability across numerous UK residential and commercial building schemes.

Key Benefits

• Thickness: 75mm
• Board Length: 2500mm
• Board Width: 600mm
• Pack Quantity: 5
• Board Coverage: 1.5m2
• Pack Coverage: 7.50m2
• Thermal Conductivity: 0.030W/mK
• R-Value: 2.40m2K/W
• Compressive strength@ 10% deformation: 300kPa
• Compressive Creep max after 50 years < 2% deformation under stress σC: 130kPa
• Fire Rating (Reaction to Fire): E
• Water vapour diffusion resistance factor μ (tabulated value): 100
• Temperature limits: -50/+75
• Edge Profile: Butt Edge
• Surface finish: Skin

Application

• Ground bearing floor below screed
• Ground bearing floor below concrete slab
• Basement floors and retaining walls
• Suspended floor
• Swimming pool

Features

1. Homogeneous, closed-cell material structure
2. Permanently high thermal insulation level
3. Negligible moisture uptake
4. High strength, rigidity and dimensional stability
5. Water and frost resistance
6. High compressive strength
7. High vapour diffusion resistance
8. Resistance to rot and deterioration
9. Simple and quick installation

Info

Explore our full range of Ravatherm Extruded Polystyrene Insulation solutions. We deliver across the UK Mainland. For project-specific guidance, product suitability advice, or bulk order pricing, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use our Live Chat service.