100mm Ravatherm XPS 300 SB Extruded Polystyrene Board

100mm Ravatherm XPS 300 SB is a robust extruded polystyrene thermal insulation board featuring a butt-edge profile, engineered for challenging construction environments. It provides outstanding thermal performance with a declared thermal conductivity of 0.030 W/mK up to 120mm thickness, and 0.031 W/mK beyond this, supporting compliance with UK Building Regulations and energy efficiency standards.

Manufactured with environmental responsibility at its core, 100mm Ravatherm 300 SB achieves a Global Warming Potential (GWP) below 5, positioning it as a sustainable insulation solution.

With minimal water absorption characteristics, verified to BS EN 12087:2013 standards, this extruded polystyrene product performs exceptionally well in below-DPC applications and other moisture-critical scenarios. Cavity wall insulation and similar damp-resistant installations benefit significantly from its properties.

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

Key Benefits

• Thickness: 100mm
• Board Length: 2500mm
• Board Width: 600mm
• Pack Quantity: 4
• Board Coverage: 1.5m2
• Pack Coverage: 6m2
• 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, suitability assessments, or bulk pricing enquiries, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use our Live Chat service.