ThermoSphere Membrane Cable

£69.95£731.95 Incl. VAT

Free delivery over £250 (Exceptions Apply)
Next Day Available | 30 Day Return Policy
Further Delivery Information

Product Overview

ThermoSphere Membrane Cable system (previously known as Vario Pro) is a system that combines an uncoupling membrane with an electric heating cable. Please note that the membrane is sold separately.

The ThermoSphere Membrane Cable is designed and manufactured in the UK – one of its unique features is a Twisted Twin Conductor cable design that neutralises cable stress and results in a supple, durable, quality cable. This cable is designed for installation into the

ThermoSphere Underfloor Heating Membrane can be laid out in a completely flexible, custom layout that best suits your walkable/exposed floor area, as it can be laid around fixed items such as toilets, cabinets, baths, etc.

We recommend using a ThermoSphere Thermostat with this cable.2 dimples apart equate to a 195W/m² output, 3 dimples equate to a 130W/m² output. Please note that laying the cable 2 or 3 dimples apart changes the area coverage of the cable length, which is why there are two area coverage figures for each cable.

ThermoSphere Underfloor Heating Cables are available in the following sizes to suit a range of area sizes, as shown below.

ThermoSphere Membrane Cable

Cable Length

Area (3 dimples, 130W/m²)

Area (2 dimples, 195W/m²)

Output (W)

12 Meters 1.15 m² 0.8 m² 150W
18 Meters 1.73 m² 1.15 m² 225W
25 Meters 2.31 m² 1.92 m² 300W
31 Meters 2.88 m² 1.92 m² 375W
37 Meters 3.46 m² 2.31 m² 450W
50 Meters 4.62 m² 3.08 m² 600W
61 Meters 5.77 m² 3.85 m² 750W
75 Meters 6.92 m² 4.62 m² 900W
100 Meters 9.23 m² 6.15 m² 1200W
125 Meters 11.54 m² 7.69 m² 1500W
150 Meters 13.85 m² 9.23 m² 1800W
200 Meters 18.46 m² 12.31 m² 2400W

Important Information

These cables cannot be cut or joined, but more than one cable can be joined to the same thermostat, as long as the total system load/draw is under 3600W/16A (the limit of all ThermoSphere Thermostats) – which equates to a floor heating area of approx. 23m².

Delivery Information

We have multiple delivery options

  • Next Day Carrier
  • Delivery From Branch 1-5 Working Day
  • Pallet -1-3 Days
  • Standard 1 -3 Day Carrier
  • Economy 1-3 Day Carrier
  • Click & Collect from store


The cost of the carriage will be displayed before your final checkout. Free delivery is available on most items for orders over £250, exceptions do apply.

Click And Collect

Please note that our stock levels are not live. Please contact your local branch prior to purchase, so that we can ensure the product is available to you. If the product isn’t available, we can organise this through an alternative branch.


  • Orders will only be dispatched and delivered on weekdays.
  • Orders for the next working day delivery must be placed before 2 pm, this gives us time to pick and pack before the carrier arrives to collect.
  • We aim to dispatch all carrier delivered items within 48hrs, and all items delivered on our own transport within 5 days, Monday to Friday. Saturday Delivery can be made upon request, depending on availability.
  • An email will be sent when your goods leave us via Carrier, this email will include tracking information. If your order is delayed for any reason, we will contact you.
  • If delivery is from a Branch, then a member of our team will be in contact with you.


We pride ourselves on our customer service, but mistakes can happen. If you receive an incorrect or faulty item, please notify us within 30 days to arrange a refund, return or exchange.


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