HEATING | FLOOR | SCREED
The ThermoSphere Screed electric underfloor heating cable is installed directly into the layer of screed to create an energy efficient heating system.
Ideal for any type of project where height build up is not limited
Recommended Solution for Screed Underfloor Heating
Bring the warm feeling to an engineered timber or laminate floor finish. Extra thermal insulation can be included if required.
Click each layer to view specific product information.
SmartHome Control
New ThermoSphere SmartHome controls that work with Alexa.
Works with Alexa via the ThermoSphere SmartHome hub.
Can be used as a standalone electric underfloor heating thermostat.
Control from anywhere with the ThermoSphere iOS & Android app.
Available in black or white.
50-100mm sand and cement, or flow screed
ThermoSphere do not provide the properties for the screed itself.
ThermoSphere Screed Heating Cable
Heavy duty heating cable designed for installation directly into 50 - 100 mm screed layers where height build up is not limited.
Suitable for almost any flooring finish including wood, carpet and vinyl.
Please see the product options table at the bottom of the page for available sizes & outputs.
Substrate insulation layer
ThermoSphere do not currently provide properties for the substrate insulation
Concrete substrate
Engineered timber or laminate floor finish
ThermoSphere Screed underfloor heating cable is perfect for use with an engineered timber or laminate floor finish.
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Heavy duty electric underfloor heating cable designed for use in screed
Heating cable
Versatile heating cable designed for installation in the screed layer of new builds or renovation projects.
Galvanised fixing profile
Pre spaced galvanised fixing profile ensures a secure cable installation.
Perimeter insulation foam
Perimeter insulation foam acts as a thermal break and expansion gap around the screed.
Efficient storage heating effect
Screed heating systems have a slower heat up and cool down time and are suited to rooms that are in constant use. Take advantage of cheaper, low cost energy tariffs such as off peak Economy 7.
Robust, hard wearing cable
The advanced protective PVC coating on ThermoSphere screed heating cable protects the heating element during installation and provides a long product life span.
Design your own heating output
The heating output per m2 can be adjusted by varying the cable spacing to achieve your desired heating output.
Call us: 0800 019 5899
Send us a message
If you are looking for efficiency
ThermoSphere screed heating cable is a versatile underfloor heating cable designed for installation within the screed layer of new builds or renovation projects where floor height is not an issue.
The heating cable creates an energy efficient heating system by warming the screed slab as a slow release thermal mass.
Suitable for almost any flooring finish and installation in concrete screeds of 50mm to 100mm.
For optimum efficiency, cables should be fixed to foil faces insulation boards prior to screeding.
The perfect combination
For the perfect combination, we recommend installing our perimeter foam. The foam allows the screed to expand and contract when heated. Failure to allow for this expansion could result in a breakage in the screed.
Great news! We're totally compliant and so are you when you use, specify and install our electric underfloor heating and thermostats.
What is Lot 20? In a nut-shell, the Lot 20 EcoDesign directive helps you save energy and money by introducing a standard for energy efficiency for electric heating system and other products in the home. The directive came into force in January 2018 and you can relax knowing our solutions are 100% compliant!
Choose between 2 fixing methods
1. Cable staples & tacker gun
For an easy installation onto foil faced insulation boards with 8mm staples
2. Galvanised fixing profile
A 25m roll of galvanised steel fixing profile. Can be mechanically fixed to timber or concrete substrates.
Useful calculations
Calculate your total heated area and multiple by the heat output required (eg 120W/m2). Next, choose the relevant cable from the list in the section above.
Example:
21m2 x 120W/m2 = 2520W required.
With this requirement you would select the 144Lm cable (2600W).
Allow 4 staples per linear metre of cable.
Example:
144Lm x 4 = 576 staples
Cable Lm / 6 = Lm of fixing profile required.
Example:
144Lm / 6 = 24Lm of fixing cable for cable stock code 3062 (144Lm)
Take the total heated area (m2) and multiply by 100. Then divide by the length of cable you have chosen. This gives you your cable spacing in cm.
Example:
21m2 x 100 / 144Lm = 14.5cm
Please note: The lower the output per m2, the greater the cable spacing will be.
We do not recommend spacing further than 15cm or closer than 5cm.
ThermoSphere screed heating cable options
Screed heating cable
Select an in screed heating cable length that provides the required heat output and fits within the area that you wish to heat.
| Stock Code | Description | Length (m) | Output (w) | Resistance (Ω) |
|---|---|---|---|---|
| SC-011-0200 | Cable 200W | 11 | 200 | 264.5 |
| SC-016-0300 | Cable 300W | 16.5 | 300 | 176.3 |
| SC-022-0400 | Cable 400W | 22 | 400 | 132.2 |
| SC-027-0500 | Cable 500W | 27.5 | 500 | 105.8 |
| SC-033-0600 | Cable 600W | 33 | 600 | 88.2 |
| SC-039-0700 | Cable 700W | 39 | 700 | 75.6 |
| SC-045-0850 | Cable 850W | 45 | 850 | 62.2 |
| SC-055-1000 | Cable 1000W | 55 | 1000 | 52.9 |
| SC-069-1250 | Cable 1250W | 69 | 1250 | 42.3 |
| SC-076-1375 | Cable 1375W | 76 | 1375 | 38.5 |
| SC-094-1700 | Cable 1700W | 94 | 1700 | 31.1 |
| SC-116-2100 | Cable 2100W | 116 | 2100 | 25.2 |
| SC-144-2600 | Cable 2600W | 144 | 2600 | 20.4 |
| SC-183-3300 | Cable 3300W | 183 | 3300 | 16.0 |
Screed heating cable accessories
Select an in screed heating cable length that provides the required heat output and fits within the area that you wish to heat.
| Stock Code | Description | Size | Unit |
|---|---|---|---|
| SC-STA-0600 | Screed Cable Staples | 8mm | Pk 600 |
| SC-STG | Screed Cable Staple Gun | - | - |
| SC-GFP-025 | Screed Cable Fixing Profile | 20mm x 25m | Roll |
| PIF-50-050 | Perimeter Insulation Foam | 5 x 80 x 50mm | Roll |
| SCM-B-01 | Manual Control (Black) - For off peak electricity | 85 x 85 x 46mm (31mm in wall) | Ea |
| SCM-W-01 | Manual Control (White) - For off peak electricity | 85 x 85 x 46mm (31mm in wall) | Ea |
