The High Output Single Room Joist Underfloor Heating Kit is designed for installing water underfloor heating between timber joists within a single room or area. It provides consistent and efficient heat output using aluminium heat spreader plates to distribute warmth evenly across the floor surface.

The system uses 150mm pipe centres, allowing for higher heat output at lower flow temperatures. This makes it suitable for use with air source heat pumps (ASHP) as well as traditional boiler systems.

This system is suitable for suspended timber floors where access from above or below is available. The aluminium spreader plates sit between joists and secure the 16mm underfloor heating pipe, improving heat transfer and reducing warm-up times compared to pipe-only installations.

The kit is configured for single room control, making it ideal for heating individual spaces such as kitchens, extensions, bathrooms, or open-plan areas. It can be connected to an existing heating system or used as part of a larger underfloor heating setup.

Each kit includes all core components required for installation, including 16mm barrier pipe, stainless steel manifold, pump and mixing valve set and all necessary fittings. Pipe lengths and manifold sizing are matched to the selected coverage area to help ensure correct system performance.

• Designed for suspended timber floors with joist installation
• 150mm pipe centres for higher heat output and lower flow temperatures
• Suitable for use with air source heat pumps (ASHP) and boilers
• Aluminium spreader plates for improved heat output and even heat distribution
• Single room zoning for independent temperature control
• 16mm oxygen barrier pipe for durability and system protection
• Pre-sized components based on floor area
• Compatible with standard floor finishes including carpet, laminate, and engineered wood

Warm water circulates through the pipe installed within the aluminium spreader plates at 150mm spacing. This closer pipe layout increases heat output while allowing the system to run at lower water temperatures. The plates transfer heat across the underside of the floor, allowing it to rise evenly into the room above.

• Single rooms within timber joisted properties
• Kitchens, bathrooms, and extensions
• Renovation projects with existing suspended floors
• Targeted heating zones within a larger system

This kit is intended for use where floor heights cannot be increased and an underfloor heating solution is required within the existing joist structure.