FastWarm® ThermoDeck Single Zone Water Underfloor Heating Kits are designed to provide a ultra low profile retro fit installation above joisted floors in one Zone (area) and comes with one thermostatic controller. Meaning regardless of how big the area/how many rooms, the system will act as one and be controlled as one zone. For multiple room or zone control, please refer to the Fastwarm® Multi Zone systems.
FastWarm® ThermoDeck 22mm chipboard is grooved at 150mm centres to accept 12mm pipe and factory fitted with a 100-micron foil covering for even heat distribution suitable for applications over a suspended / joisted floor providing minimal floor build up.
Once installed FastWarm® ThermoDeck needs to be covered with a minimum of 6mm ply to provide a solid subfloor to finish the room with your desired floor finish.
FastWarm® ThermoDeck Single Zone Water Underfloor Heating systems are the homeowner and installers perfect choice as each kits comes complete with everything you need in a box with a multiple of different choice of thermostat control. Systems come with an easy-to-follow installation guide and all pipework comes with lifetime (50yr) guarantee. FastWarm® also has a fully qualified technical support team available for on-site queries.
Note: These Single zone water underfloor heating kits are designed to cover the m2 in pipework when fitted into the grooves provided NB. Pipe is not provided to get to and from from the heat source.
FastWarm® Water Kits include FastWarm® branded products, from pipework, pump, thermostats, manifolds etc as to ensure that seal of quality and approval and reassure the lifetime guarantee that comes with FastWarm® systems. There are many similar systems on the market that are simply unbranded or OEM parts.
Fastwarm® Thermodeck Single Zone kits include the following: -

FastWarm® ThermoDeck
For use with 12mm Pipe

Fastwarm® PEX AL PEX 12mm Pipework
Includes 50 year lifetime guarantee

Fastwarm® Manifold
Size varies depending on m2 coverage

Grundfos A Rated Pump & Mixing Valve Unit
The compact T4 thermostatic 4-port pump set is suitable for a maximum output of 18kW.

Choice of Thermostat
We have several thermostats available to fit your budget and lifestyle.

Fastwarm® Pipe Cutter
Suitable for PVC, PP, PPR and PE pipe. Ideal for fitting MDPE and PEX pipes. Cutting capacity 36mm.
Kit Content Comparison Table
This table shows exactly what you'll get in the box based on your chosen kit size.
Kit Size (m2) | 20 | 30 | 40 | 50 |
---|---|---|---|---|
Pipe Length (m) | 160 | 240 | 320 | 400 |
Isolation/Ball Valve | ||||
Eurocones (12mm) | 4 | 6 | 8 | 10 |
ThermoDeck | 16 | 23 | 31 | 39 |
Fill & Drain Valves | ||||
Manifold Pump & Mixing Valve Unit | ||||
Pipe Cutters | ||||
Pipe Rounding Tool | ||||
Manifold Ports | 2 | 3 | 4 | 5 |
Kit Size (m2) | 60 | 70 | 80 | 90 |
---|---|---|---|---|
Pipe Length (m) | 480 | 560 | 640 | 720 |
Isolation/Ball Valve | ||||
Eurocones (12mm) | 12 | 14 | 16 | 18 |
ThermoDeck | 46 | 54 | 62 | 69 |
Fill & Drain Valves | ||||
Manifold Pump & Mixing Valve Unit | ||||
Pipe Cutters | ||||
Pipe Rounding Tool | ||||
Manifold Ports | 6 | 7 | 8 | 9 |
Kit Size (m2) | 100 | 110 | 120 |
---|---|---|---|
Pipe Length (m) | 800 | 880 | 960 |
Isolation/Ball Valve | |||
Eurocones (12mm) | 20 | 22 | 24 |
ThermoDeck | 77 | 85 | 92 |
Fill & Drain Valves | |||
Manifold Pump & Mixing Valve Unit | |||
Pipe Cutters | |||
Pipe Rounding Tool | |||
Manifold Ports | 10 | 11 | 12 |
Kit Size (m2) | 20 | 30 | 40 | 50 | 60 | 70 |
---|---|---|---|---|---|---|
Pipe Length (m) | 160 | 240 | 320 | 400 | 480 | 560 |
Isolation/Ball Valve | ||||||
Eurocones (12mm) | 4 | 6 | 8 | 10 | 12 | 14 |
ThermoDeck | 16 | 23 | 31 | 39 | 46 | 54 |
Fill & Drain Valves | ||||||
Manifold Pump & Mixing Valve Unit | ||||||
Pipe Cutters | ||||||
Pipe Rounding Tool | ||||||
Manifold Ports | 2 | 3 | 4 | 5 | 6 | 7 |
Kit Size (m2) | 80 | 90 | 100 | 110 | 120 |
---|---|---|---|---|---|
Pipe Length (m) | 640 | 720 | 800 | 880 | 960 |
Isolation/Ball Valve | |||||
Eurocones (12mm) | 16 | 18 | 20 | 22 | 24 |
Thermodeck | 62 | 69 | 77 | 85 | 92 |
Fill & Drain Valves | |||||
Manifold Pump & Mixing Valve Unit | |||||
Pipe Cutters | |||||
Pipe Rounding Tool | |||||
Manifold Ports | 8 | 9 | 10 | 11 | 12 |
Kit Size (m2) | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 |
---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Length (m) | 160 | 240 | 320 | 400 | 480 | 560 | 640 | 720 | 800 | 880 | 960 |
Isolation/Ball Valve | |||||||||||
Eurocones (12mm) | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
ThermoDeck | 16 | 23 | 31 | 39 | 46 | 54 | 62 | 69 | 77 | 85 | 92 |
Fill & Drain Valves | |||||||||||
Manifold Pump & Mixing Valve Unit | |||||||||||
Pipe Cutters | |||||||||||
Pipe Rounding Tool | |||||||||||
Manifold Ports | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |

- Material
- Fastwarm ThermoDeck is made of P5 Tongue and Grooved 22mm chipboard, factory fitted with a 100 micron foil high-density particleboard with a minimum thickness of 12mm. Each board is 2400mm x 600mm x 22mm covering an area of 1.44m2.
- Groove Design
- Fastwarm ThermoDeck precision-machined grooves running along the length of the panel at regular intervals suitable for the underfloor heating system. The grooves spaced at 150mm centres with an integrated loop to provide maximum floor coverage and even heat distribution.
- Surface Finish
- Fastwarm ThermoDeck must be covered with a minimum of 6mm ply to ensure correct installation. Above this surface your desired floor finish can be installed such as laminate or engineered woods, tiles, LVT (vinyls) and low tog underlay and carpets (2.5TOG max).
- Compatibility
- Fastwarm ThermoDeck panels are compatible with 12mm underfloor heating pipework, ensuring easy installation and optimal performance when used in conjunction with such systems.
- Installation Guidelines
- Clear installation guidelines shall be provided by the manufacturer to ensure proper handling, placement, and fixing of Fastwarm ThermoDeck panels, considering best practices for underfloor heating installations.
Our August Bank Holiday Delivery Times
Order Date | Order Time | Expected Delivery Date |
---|---|---|
Thu 21st August* | Before 4:30pm | Fri 22nd August |
Thu 21st August | After 4:30pm | Tues 26th August |
Fri 22nd August* | Before 4:00pm | Tues 26th August |
Fri 22nd August | After 4:00pm | Wed 27th August |
Sat 23rd August | All day | Wed 27th August |
Sun 24th August | All day | Wed 27th August |
Mon 25th August | All day | Wed 27th August |
Free Delivery as Standard!
As standard we include 2 - 3 working day delivery on all orders delivered to the UK mainland. * A £5 delivery charge will be applied to all orders below £20.
Delivery cut off times
Our final delivery time for Mondays to Thursday is 4:30pm. To give us a bit more time to ensure weekend deliveries are handled and our couriers have time to collect, the final delivery time on Fridays is 4:00pm.
2-3 working day delivery
Next working day
Next working day before 10:30
Saturday Delivery
* A £5 delivery charge will be applied to all orders below £20.
Other Delivery Options
Pre 10:30am and Saturday delivery services are available on orders placed before 4:30pm. Any order placed before 4:30pm on a Friday will be delivered on the following Monday (unless its a bank holiday) so please select a Saturday service if a weekend delivery is required.
Delivery outside the UK
Delivery outside the mainland UK may be arranged by prior agreement. You will be notified of the amount of the charge for this service and will at that point have to make a decision whether you wish to proceed wth your order.
Important: Our deliveries rely on third party couriers, so, whilst we make every effort to deliver your order on the specified date and time, unfortunately there may be occasions when this will not be possible due to external influences. Due to this we strongly recommend you ensure you have received your order before any tradespeople/builders are scheduled to commence work.
Still Unsure? Talk to an expert
If you need any guidance or further information our highly experienced team are on hand to help.
Get in touch using our contact form or give us a call on 0800 023 4203 or 01268 744 479.