175mm Ravatherm XPS 300 SL Flat Roof Board

175mm 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 board provides outstanding thermal performance, with a declared thermal conductivity of 0.030 W/m·K for thicknesses up to and including 120 mm, and 0.031 W/m·K for thicknesses exceeding 120 mm.

Built with environmental responsibility at its core, 175mm Ravatherm XPS 300 SL achieves a Global Warming Potential (GWP) of less than five, making it an excellent option for sustainable and energy-efficient construction projects across the UK.

These XPS insulation boards come in thicknesses ranging from 50 mm to 200 mm, providing flexibility for diverse commercial and residential flat roofing applications, whether for new construction or renovation work.

Key Benefits

• Brand: Ravago
• Model: 175mm Ravatherm 300SL
• Thickness: 175mm
• Board Length: 1250mm
• Board Width: 600mm
• Pack Quantity: 2
• Board Coverage: 0.75m2
• Pack Coverage: 1.50m2
• Thermal Conductivity: 0.031W/mK
• R-Value: 5.65m2K/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 insulation performance for flat roof systems
2. Engineered for green, brown, and blue roof applications
3. Low GWP rating for environmentally conscious builds
4. Meets UK energy efficiency requirements
5. Available in multiple thicknesses (50–200 mm)

175mm 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 over 65 years of proven UK XPS insulation experience.

Engineered through advanced extrusion technology, Ravatherm 175mm XPS boards feature a closed-cell structure with a smooth extrusion skin, delivering exceptional strength and long-term durability. Offered in various thicknesses and compressive strengths, these boards incorporate innovative low-GWP CO₂ and HFO blowing agent technology.

Enhance your building's thermal performance with 175mm XPS 300 SL, the preferred solution for UK flat roof insulation projects.

Info

Browse our full range of Ravatherm Extruded Polystyrene Insulation products. We deliver to all UK Mainland locations. For product suitability advice, quantity discount quotations or technical guidance, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use our Live Chat service.