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Undertile heating
The thin profile of Thermowire means that it can be installed in the layer of tile glue therefore not adding any additional height to your floor build up. It can also be covered with a layer of self-levelling compound to allow it to be used in conjunction with other floor finishes.
Rapid heat up time
With the Thermowire cable installed directly below the tiles you will experience rapid warmth to your floors. We recommend installing with an output of 150w/m² when undertile in areas outside the bathroom and 200w/m² for the bathroom.
Lifetime Warranty
We are so confident of the quality of our Thermowire Underfloor Heating systems, made in the United Kingdom, that we give each system a warranty that lasts a Lifetime with 3 year warranty on our Thermostats.
Variable output Underfloor Heating
The cable system allows you to space the heating cables yourself to achieve a desired layout and heat output per m². For larger areas directly undertile we would recommend an output of 150W/m² and for bathrooms, either above or below the screed, we would recommend an output of 200W/m².
Advanced heating cable
Our superior advanced cable ensures your heating system will last years to come as well as being robust and durable during the install process.
Cloth tape for fixing to the substrate
Both the undertile and in screed loose wire systems are supplied with a roll of cloth tape for taping the cable to the substrate.
Ideal for irregular shaped areas
The layout is totally flexible and can be designed to fit around furniture and fixtures in small or irregular shaped rooms.
Choose an area to fit your space
Stock No. 101502TWF | Size 14lm | Area 1.0-1.4m² | Output 185 W | Price $695.00 | Stock Status In Stock | |
Stock No. 101503TWF | Size 22lm | Area 1.5-2.4m² | Output 300 W | Price $755.00 | Stock Status In Stock | |
Stock No. 101504TWF | Size 33lm | Area 2.5-3.4m² | Output 450 W | Price $795.00 | Stock Status In Stock | |
Stock No. 101506TWF | Size 44lm | Area 3.5-4.4m² | Output 600 W | Price $855.00 | Stock Status In Stock | |
Stock No. 101508TWF | Size 55lm | Area 4.5-5.4m² | Output 750 W | Price $915.00 | Stock Status In Stock | |
Stock No. 101510TWF | Size 66lm | Area 5.5-6.9m² | Output 900 W | Price $1,005.00 | Stock Status In Stock | |
Stock No. 101512TWF | Size 86lm | Area 7.0-8.9m² | Output 1200 W | Price $1,130.00 | Stock Status In Stock | |
Stock No. 101515TWF | Size 110mm | Area 9.0-10.9m² | Output 1500 W | Price $1,250.00 | Stock Status In Stock | |
Stock No. 101518TWF | Size 132lm | Area 11.0-12.9m² | Output 1800 W | Price $1,410.00 | Stock Status In Stock | |
Stock No. 101521TWF | Size 154lm | Area 13.0-14.9m² | Output 2100 W | Price $1,520.00 | Stock Status In Stock | |
Stock No. 101524TWF | Size 176lm | Area 15.0-18.0m² | Output 2400 W | Price $1,650.00 | Stock Status In Stock |
Technical Data
Thickness
3.5mm
Max Temperature
28°C *
Protection Rating
IP68
Warranty
Lifetime Warranty
Conductor Type
Singled Ended
Cold tail length
5m
* Regulated by floor sensing thermostat
Downloads
Frequently Asked Questions
What are the advantages and disadvantages of loose wire over a matting system?
Thermowire is designed for small awkward area as it is easy to place where needed and go around fixtures. However, in large open areas a matting system is recommended at it is a lost quicker and easier to install and having the heating cable all pre-spaced on the matting means there is less chance of having uneven heating across the room.
What is the optimum cable spacing for loose wire heating?
The ideal spacing between heating cables is 90mm. The minimum cable spacing is 40mm and the maximum spacing is 110mm. To calculate your cable spacing use the following formula:
Available Floor Space (m²) × 100 ⁄ Cable Kit Length (m) = Cable Spacing (cm)
Available Floor Space (m²) × 100 ⁄ Cable Kit Length (m) = Cable Spacing (cm)
Is Underfloor Heating safe to be installed in the shower?
Providing that the shower floor is tiled (not a shower base) like the rest of the bathroom floor, all of Thermogroup’s underfloor heating systems are suitable for installation in the shower area.
The cable has an IP (Ingress Protection) rating of IP68 and a continuous earth braid the full length of the cable. This ensures it is safe should the cable come in contact with water and gives you the assurance of safety in the unlikely event of install damage. For further protection we recommend that you do not end the heating system in the shower area.
The cable has an IP (Ingress Protection) rating of IP68 and a continuous earth braid the full length of the cable. This ensures it is safe should the cable come in contact with water and gives you the assurance of safety in the unlikely event of install damage. For further protection we recommend that you do not end the heating system in the shower area.
Can Underfloor Heating be installed up the side and on top of a shower seat?
All Underfloor Heating cable must be covered by a cement-based product and cannot operate in a void. Therefore, provided that the shower seat is tiled like the rest of the bathroom and all cable is covered by a cement-based flexible tile adhesive, then it is perfectly safe to install the heating on a shower seat.
What is the best Underfloor Heating system for my application?
If you are unsure which floor heating system best suits your needs or daunted by the many options and offerings on the market, Thermogroup's online underfloor heating system selector tool can help you make the best decision. Our underfloor heating selector takes you through a simple four step process to determine the most suitable underfloor heating system for your individual application then also lists out all the products required to get the job done, so you can be assured that you will have everything required when it comes to installation. If you have any requirements outside of those specified on the tool do not hesitate to contact us to discuss your requirements.
Should Underfloor Heating be installed below or above the waterproofing?
To ensure a fully waterproof substrate it is recommended to lay the floor heating over the waterproofing. In a screed application, where the waterproofing is on top of the screed, an in screed system can be laid before the waterproofing.
What are the rough in or first fix requirements for Underfloor Heating and a Controller?
When roughing in for our Underfloor Heating and the controller, the electrician will first need to bring mains power to the Thermostat location. The electrician will then also need to run two 20mm conduits from the Thermostat position down to the floor, for the Underfloor Heating Cold Tail and for the Floor Sensor. For further information and a visual representation, please view our Conduit Requirements download.
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