Ravatherm 165mm XPS 300 SL Flat Roof Board

165mm Ravatherm XPS 300 SL is a premium extruded polystyrene (XPS) thermal insulation board engineered for inverted flat roofs throughout the UK, encompassing green roofs, brown roofs, and blue roof systems. This board delivers outstanding thermal performance with a thermal conductivity rating of 0.031 W/m·K, ensuring superior energy efficiency for your building envelope.

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

These 165mm XPS boards come in thicknesses ranging from 50 mm to 200 mm, offering flexibility for both new-build and refurbishment flat roofing schemes in commercial and residential settings.

Key Benefits

• Brand: Ravago
• Model: 165mm Ravatherm 300SL
• Thickness: 165mm
• Board Length: 1250mm
• Board Width: 600mm
• Pack Quantity: 2
• Board Coverage: 0.75m2
• Pack Coverage: 1.50m2
• Thermal Conductivity: 0.031W/mK
• R-Value: 5.30m2K/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 165mm XPS 300 SL is a trusted solution across the UK for flat roof, flooring, and wall insulation applications. Manufactured and dispatched from King's Lynn, Norfolk, Ravatherm brings over 65 years of proven XPS insulation experience to the British market.

Built using advanced extrusion technology, these 165mm boards feature a closed-cell structure with a smooth extrusion skin that delivers exceptional strength and long-term durability. The range includes various thicknesses and compressive strengths, incorporating innovative low-GWP CO₂ and HFO blowing agent technology for reduced environmental impact.

Enhance your building's thermal performance with Ravatherm 165mm XPS 300 SL, the reliable choice for UK flat roof insulation projects requiring premium performance.

Info

Browse our full range of Ravatherm Extruded Polystyrene Insulation products. We deliver across the entire UK Mainland. For advice on product suitability for your project or to request a quantity discount quotation, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Lowest UK Insulation Prices near me.