Ravatherm XPS 300 SL 50mm Flat Roof Board

Ravatherm XPS 300 SL is a premium extruded polystyrene (XPS) thermal insulation board engineered for inverted flat roofs throughout the UK, including green roofs, brown roofs, and blue roof systems. This product delivers outstanding thermal performance with a declared thermal conductivity of 0.030 W/m·K for thicknesses up to 120 mm, and 0.031 W/m·K for thicknesses exceeding 120 mm.

Built with environmental responsibility at its core, Ravatherm XPS 300 SL features a Global Warming Potential (GWP) of less than five, making it an excellent option for sustainable and energy-conscious construction projects across the UK.

The 50mm XPS insulation boards come in thicknesses ranging from 50 mm to 200 mm, providing versatility for numerous commercial and residential flat roofing applications, from new construction to renovation work.

Key Benefits

• Brand: Ravago
• Model: 50mm Ravatherm 300SL
• Thickness: 50mm
• Board Length: 1250mm
• Board Width: 600mm
• Pack Quantity: 8
• Board Coverage: 0.75m2
• Pack Coverage: 6m2
• Thermal Conductivity: 0.030W/mK
• R-Value: 1.65m2K/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: Ship lap
• Surface finish: Skin

Application

• Inverted Roofs
• Green Roofs
• Roof Terraces
• Car Park Decks

Key Benefits

1. Superior thermal performance for flat roof systems
2. Ideal for green, brown, and blue roof installations
3. Reduced environmental impact with low GWP
4. Meets UK building energy standards
5. Available in multiple thicknesses (50–200 mm)

Ravatherm 300 SL XPS Board is extensively used across the UK for roofing, flooring and wall applications. Manufactured and dispatched from King's Lynn, Norfolk, Ravatherm brings more than 65 years of proven XPS insulation experience to the UK market.

Engineered through an advanced extrusion process, Ravatherm 50mm XPS boards incorporate a closed-cell structure and smooth extrusion skin for exceptional strength and long-term durability. Offered in various thicknesses and compressive strengths, these boards feature cutting-edge low-GWP CO₂ and HFO blowing agent technology.

Enhance your building's thermal performance with Ravatherm XPS 300 SL, the preferred solution for UK flat roof insulation schemes.

Info

Explore our full range of Ravatherm Extruded Polystyrene Insulation products. We deliver to all UK Mainland locations. To discuss product suitability for your project or request a bulk quotation, please contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat for competitive UK insulation pricing.