ThermoSphere Decoupling Membrane Mat (Self-adhesive)
ThermoSphere Ultimate® is quick and easy to install, plus it’s the most reliable underfloor heating cable. ThermoSphere Ultimate combines a TwistedTwin cable, and in-line joint technology. This removes the risk of damaging the cable during installation, as cutting into the membrane and substrate is no longer required.

• ThermoSphere Ultimate is compatible with all decoupling membrane mats so you can use your preferred brand of decoupling mat with the easiest to install and most reliable heating cable.
• There is no bulky hot/cold joint that needs cutting into the floor - Installation is quick and easy.
• Install ThermoSphere Ultimate into ThermoSphere Membrane or Self-adhesive Membrane at either 130W/m² or 195W/m2.
• ThermoSphere Membrane’s decoupling properties neutralise lateral movement in the floor and minimise the risk of cracking and delamination.
• Creates a waterproof layer within the floor when used with waterproofing products.
• Fleece backed membrane is adhered with a flexible tile adhesive, and self-adhesive membrane can be laid directly onto a clean plywood sub floor