What is joisted underfloor heating?
Joisted underfloor heating consists of lifting your floor boards, notching the joists beneath them, and running warm water pipe through either Aluminium Spreader Plates or aluminium coated EPS panels that sit between your joists and relaying your floor boards. You can then run the floor heating at temperatures of 50 – 55°C and enjoy the unparalleled comfort with out needing to add any build up height to your project.
Joist Underfloor Heating Considerations
There are some things you might consider before committing to a joisted underfloor heating system.
Installation. If your project is a retrofit or a new build, you may have issues with accessibility.
Heat Up Time & Efficiency. The efficiency of your system will depend on the insulative resistance of the material covering your joists (chipboard, floorboards) as well as the floor finish (carpet, wood, etc). Which can cause longer heat up times and in some cases it is necessary to use higher running temperatures. This causes lower efficiency and controllability.
For easy access and maximum control & efficiency, it may be preferable to use our:
Leak proof pipes
No joins under the floor and 100% leak proof pipe.
Low maintenance
Very low maintenance and reliably consistent, it just works!
Compatible with all boilers
Compatible with any heat source, including future heat pumps.
3 Steps to Comfort...
Get a free estimate
Send your plans or dimensions for a free no obligation estimate
Design your system and install
Place a small deposit for a custom designed, highly efficient UFH system. Our 5-star Customer Care team are here 6 days a week to help you or your installer during and long after the install.
Enjoy your floor heating!
Sit back and enjoy luxury comfort, lower heating bills and furnish your home with freedom with 15% more usable space!
High-Efficiency System Design
Wunda is renowned for its high-efficiency underfloor heating system designs. With a deep understanding of heating technology and a commitment to innovation, Wunda consistently delivers cutting-edge solutions that provide optimal comfort and energy efficiency.
Underfloor Heating efficiency and Heat Sources
Water Underfloor heating systems will give the most efficient results from any heat source. Due to less energy being used to produce low water temperatures 35-45°C. Perfect for any boiler or Ground Source or Air Source Heat Pump.
Wunda’s joist system
Available with between joist panels for additional insulation or thick aluminium spreader plates.
Wunda joisted floor systems use close pipe centres, thick aluminium. Maintaining input temperatures that make floor heating environmentally friendly and efficient. Suitable for both old and new properties.
Between Joist Panel
Between Joist Panel coated with thick aluminium foil, for both new and existing floors.
Spreader Plate
With aluminum spreader plates that are fixed across the joist cavity. For both new and existing floors. (We only use 500 micron aluminium for rigidity)
PERT / AL / PERT Pipe
Available in 16mm or 12mm to fit your desired solution, featuring an oxygen barrier for increased lifetime and aluminium core for greater thermal conductivity.
Compare systems
Not sure which UFH system is right for your upcoming project, compare the differences below
| Screed | Rapid Response® | Joist | |
| Extensions |  |  |  |
| New builds |  |  |  |
| Renovations |  |  |  |
| No need to dig up floors | – |  | – |
| Fast heat up time | – |  | – |
