80mm Ravatherm XPS 300 SB Extruded Polystyrene

80mm Ravatherm XPS 300 SB is a premium extruded polystyrene thermal insulation board engineered for high-performance applications in UK construction. This product achieves a thermal conductivity of 0.030 W/mK for thicknesses up to 120mm, and 0.031 W/mK above this threshold, ensuring compliance with current Building Regulations and energy efficiency standards.

Manufactured with environmental responsibility as a priority, 80mm Ravatherm 300 SB carries a Global Warming Potential (GWP) below 5, positioning it as a sustainable insulation solution.

With minimal water absorption properties verified to BS EN 12087:2013, this extruded polystyrene board performs exceptionally well in moisture-prone environments. It is particularly suited for below-DPC applications and cavity wall insulation, alongside other damp-resistant construction scenarios.

The range extends across multiple thicknesses from 30mm to 200mm, providing versatility for diverse residential and commercial building projects throughout the UK.

Key Benefits

• Thickness: 80mm
• 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

Browse our full range of Ravatherm Extruded Polystyrene Insulation products. We deliver across the UK Mainland. For project-specific advice, product suitability assessments, or bulk quotations, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat for the best UK insulation pricing.