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Thermoslab Heating Cable

Thermoslab is a 7mm thick underfloor heating cable that is incredibly versatile and durable. To generate an energy efficient thermal mass under your floor, install the wire in the concrete slab of new construction. To figure out which heating cable you’ll need, multiply your area’s square meters by 160 to get the required output (Watts).


Technical Data

Cable Thickness 7mm
Protection Rating IP67
Warranty Lifetime
Max. temperature* 28°C *

* Regulated by floor sensing thermostat


Stock No. Length Output Resis.Ω Stock Status Action
3138 10m 300 W 176.33 Ω In Stock
3139 20m 600 W 88.17 Ω In Stock
3142 37m 1100 W 48.09 Ω Out of Stock
3145 50m 1500 W 35.27 Ω In Stock
3148 67m 2000 W 26.45 Ω In Stock
3152 84m 2500 W 21.16 Ω In Stock
3155 100m 3000 W 17.63 Ω In Stock
3156 112m 3350 W 15.79 Ω In Stock
3158 134m 4020 W 14.21 Ω In Stock
3160 150m 4500 W 11.76 Ω Out of Stock
3164 200m 6000 W 8.82 Ω In Stock

Also available in kits including a Thermostat

Installation Accessories

Stock No. Description Size Stock Status Action
3257 Cable Ties 140mm In Stock

Allow 3 cable ties for every 1m of heating cable. Thermotouch manual thermostats are recommended for Thermoslab as this is typically connected to off peak power tariffs so you cannot have a programmable thermostat as it would lose its program during the ‘off periods each day

Frequently Asked Questions

Because heating the slab provides a thermal mass beneath your floor that allows for a steady continuous release of heat, you can take advantage of the Off-Peak electricity tariff when using it in Slab Heating. Because under-tile and in-floor heating systems heat up and cool down faster, they are not suited for use with off-peak electricity.

No, the heating wires or mats cannot be connected, although two or more components can be connected in parallel to a single thermostat. When connecting several cables or mats, be sure the overall load does not exceed the thermostat's total load.

No -never. The resistance will change if the heating cable is cut, causing the element to overheat. Please call our technical hotline for assistance if you accidentally cut the cable.

Yes, absolutely. Although the Thermonet 200W system is designed to be installed beneath a screed, it can also be installed directly beneath the tiles, just as the 150W system can. When positioned directly beneath the tiles, the 200W system will heat up faster than the 150W system due to the larger wattage. Use the 200W system directly beneath the tiles if you want a more on-demand system or if you have a significant heat loss application.

Because of the insulation value of your home, the type of flooring you have, and the quantity of heating you have beneath the insulation, every circumstance is unique. Because it is necessary to heat the entire slab profile, an inslab heating system normally takes 1-2 days to heat up and cool down. Once it warms up, the slab functions as a heat bank, allowing the area to heat up more efficiently.