Ravatherm 140mm XPS 300 SL Flat Roof Board

140mm Ravatherm XPS 300 SL is a premium extruded polystyrene (XPS) thermal insulation board engineered for flat roof applications across the UK, including green roofs, brown roofs, and blue roof systems. It provides 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.

Designed with environmental responsibility at its core, Ravatherm XPS 300 SL achieves a Global Warming Potential (GWP) of less than five, making it an ideal solution for sustainable and energy-efficient building projects throughout the UK.

The 140mm XPS boards come in thicknesses ranging from 50 mm to 200 mm, offering flexibility for diverse commercial and residential flat roofing projects, whether new construction or renovation work.

Key Benefits

• Brand: Ravago
• Model: 140mm Ravatherm 300SL
• Thickness: 140mm
• Board Length: 1250mm
• Board Width: 600mm
• Pack Quantity: 3
• Board Coverage: 0.75m2
• Pack Coverage: 2.25m2
• Thermal Conductivity: 0.031W/mK
• R-Value: 4.20m2K/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. High-performance thermal insulation for flat roofs
2. Suitable for green, brown, and blue roof systems
3. Low GWP for sustainable construction
4. Complies with UK energy efficiency standards
5. Wide range of thicknesses (50–200 mm)

Ravatherm 140mm XPS 300 SL is the go-to choice across the UK for roofing, flooring, and wall applications. With over 65 years of XPS insulation experience, Ravatherm is manufactured and dispatched from King's Lynn, Norfolk.

Built using advanced extrusion technology, Ravatherm 140mm XPS boards feature a closed-cell structure with a smooth extrusion skin, delivering superior strength and long-term durability. Available in multiple thicknesses and compressive strengths, these boards incorporate innovative low-GWP CO₂ and HFO blowing agent technology.

Enhance your building's thermal performance with 140mm XPS 300 SL, the proven solution for UK flat roof insulation projects.

Info

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