Kingspan GreenGuard Extruded Polystyrene Insulation 300kPa

Kingspan GreenGuard Extruded Polystyrene Insulation is a durable, closed-cell XPS board engineered for long-term thermal performance in below-grade, inverted roof, and heavy-duty flooring systems. Its rigid, fibre-free structure resists moisture absorption and delivers consistent insulation efficiency. Recognised by its distinctive green colour, this insulation combines strength, versatility, and sustainability for commercial and residential construction projects.

Installation Guide:

• Ensure substrate is clean, level, and free from debris before installation
• Lay boards tightly with staggered joints to minimise thermal bridging
• For inverted roof applications, apply filter and ballast layers as recommended
• Fix boards using suitable adhesive or mechanical restraint where required
• Protect insulation from prolonged UV exposure before final covering

What is Extruded Polystyrene (XPS) Insulation?

Extruded polystyrene (XPS) insulation is a rigid, high-performance foam board produced by melting and extruding polystyrene through a die. The result is a dense, closed-cell structure that offers excellent moisture resistance and high compressive strength, making it ideal for below-ground insulation and load-bearing applications.