ThermRite XPS Insulation Board – Professional Grade

ThermRite™ XPS Insulation Board – Professional Grade

Description

The ThermRite™ XPS Insulation Board is a high-performance extruded polystyrene foam (XPS) insulation board designed to provide superior thermal insulation beneath underfloor heating systems. It offers exceptional compressive strength, moisture resistance, and thermal efficiency, making it ideal for insulation under screeds, tiles, and other floor finishes.

Available in multiple thicknesses, this board supports both refurbishment and new build projects, ensuring minimal heat loss and improved heating system efficiency.

Minimum Order: 14 Boards

3.0mm Boards are cut in half and supplied as 2 x 600x600mm boards (equalling 1200x600mm total). All other board sizes are despatched as 1 x 1200x600mm board.

For tile floor finishes these insulation boards are bonded down to the subfloor using flexible tile adhesive.

Key Features

• High compressive strength of 300 kPa (30 tonnes/m²) for heavy loads
• Thermal conductivity: 0.035 W/m·K
• Size per board: 1200mm x 600mm, coverage: 0.72 m² per board
• Water-resistant, durable, and dimensionally stable
• Fire classification: Euroclass E
• Suitable for use below tiled floors, screeds, and chipboard

Benefits

• Reduces heat loss to improve underfloor heating system efficiency
• Highly durable and moisture resistant for long-term performance
• Easy to handle and cut on site for precise fitting
• Provides strong support for floor finishes and structural integrity

Technical Specifications