Thermatile TWELVE Radiant Panels
The Thermatile TWELVE Radiant Panel is preferred when panels need to be longer than 3.6 metres. Two or more modules can be joined together using flexible hoses with the option for longer runs. The Thermatile TWELVE uses the same quality double skin 5.5mm facia as the Thermatile TEN, offering the most rigid panel on the market.
Ceiling Mounted
Thermatile TWELVE radiant ceiling panels feature high-performance insulation across the entire upper surface, extending to the panel edges and without any fixed sidewalls. As a result, the panels lose very little heat into the void, ensuring a high percentage of the heat output radiates into the room below.
Plasterboard Mounted
Thermatile TWELVE radiant ceiling panels can be installed into finished plasterboard ceilings using a pre-fitted frame. The frame is secured into a supported aperture with screws, providing a simple and effective installation method. For a more recessed finish, SPC offers a two-part frame with push-fit locking for easy repeat access.
Wall Mounted
Thermatile TWELVE radiant panels are versatile and can also be mounted on walls. A specially designed bracket is available that allows the panels to be positioned at an angle, and the panels come with a ball guard to prevent objects from becoming stuck between the panel and the wall.
Zone Control Kit
The SPC control kit provides precise control of radiant panels within a designated area or zone. It includes a Belimo rotary actuator, a Belimo zone valve, an SPC dual-sensing digital thermostat, and an SPC black bulb temperature sensor. The kit comes with a 5-year warranty as standard.
Testing Standards
Manufacturers can provide a BS EN 14037 certificate from the University of Stuttgart, Germany, for tested radiant panels. This test is crucial as it determines the accurate heat output of a 3m long and 600mm wide panel in a free-hanging or open ceiling position.
It is recommended to include this requirement in any specification to ensure correct heat outputs. The use of the BS EN 442 radiator test output by manufacturers may result in an incorrect output figure.
Frequently Asked Questions
Thermatile TEN is supplied as single panels up to 3.6 metres long. For continuous runs longer than 3.6 metres, Thermatile TWELVE is used, individual TWELVE modules are connected together using flexible hoses to create runs of any length. The choice is determined automatically by SPC’s selection software based on your specified panel length and water flowrate. Both types have identical visible finishes and can be mixed within a single installation.
Yes, both TEN and TWELVE panels can be used for radiant cooling by circulating chilled water instead of hot water. For cooling applications, the panel surface temperature must be controlled to prevent condensation. This typically requires either a dehumidification system or careful control of chilled water temperature to keep the panel surface above the dew point of the room air. Contact SPC’s technical team for cooling system design guidance.
SPC’s zone control kit includes a Belimo valve and actuator, digital thermostat, and black bulb temperature sensor. The black bulb sensor measures resultant temperature (a combination of air temperature and radiant temperature), which is a better indicator of occupant comfort in radiant-heated spaces than air temperature alone. Multiple panels can be controlled as a single zone. The control system can also be integrated with a BMS for centralised control.
Yes, radiant panels are highly compatible with heat pump systems because their large surface area allows them to deliver meaningful heat output at low water temperatures (45–50°C). This makes them more suitable for heat pump applications than radiators, which typically require higher water temperatures to achieve rated output. Specify radiant panels when designing a heat pump system for a building with moderate to high heating loads.
For T-bar suspended ceiling installations, panels drop into the grid in place of standard 600mm wide ceiling tiles. The panels are nominally 600mm wide but manufactured slightly undersized to allow for thermal expansion and ease of installation. For plasterboard ceiling installations, you need a supported aperture cut into the ceiling with sufficient structural support above. Free-hanging installations require adequate structural support from the soffit for wire or rod suspension. Contact SPC for site-specific installation guidance.
SPC radiant panels are manufactured from high-quality materials and tested to BS EN 14037. The zone control kit (valve, actuator, and controls) comes with a 5-year warranty as standard. For panel warranty details, contact SPC directly — warranty terms depend on the specific application and installation conditions.
