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

SmartHome Control

Alexa Controlled Underfloor Heating Thermostat

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.

Click here for more information on this solution

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.

Get a quick quote

Call us: 0800 019 5899

Running cost calculator

Downloads

Installation advice & help

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.

>Calculate your running costs

Get a quick quote

Call us: 0800 019 5899

Running cost calculator

Downloads

Installation advice & help

Relax. It's covered for a lifetime!

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.

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

Useful calculations

How much heating cable do I need?

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).

How many staples do I need?

Allow 4 staples per linear metre of cable.

Example:

144Lm x 4 = 576 staples

How much fixing profile do I need?

Cable Lm / 6 = Lm of fixing profile required.

Example:

144Lm / 6 = 24Lm of fixing cable for cable stock code 3062 (144Lm)

How do I work out my cable spacing?

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