Sizing instructions
SIZING INSTRUCTIONS
Please note: It is not allowed to cut the heating cable. Therefore, you have to calculate the required mat size before ordering!
Step1: Take measures 
Create an installation plan for your electric underfloor heating system and outline the areas of static or permanent furnitures in the room.Electric heating mats/cables can’t be installed under furniture and fixed installed fixtures like tubes, toilets, wardrobe, etc.
Keep a minimum distance of 30cm to walls and conductive parts of the building.
Advice: Keeping a distance of 60cm to walls allows you to place permanent furniture afterwards.
Step2: Measure precisely the area to be heated.
Step3: Choose the right heating mat or cable (our room calculator helps you to choose the right size)
A) Select Heating Mat: Under Tiles or Underwood
Select a suitable mat size. If the mat size differs from the measured area, always choose the next size smaller mat.
Example:
Measured area of room: 12m²
Calculated area of heated floor: 8,9m²
Selected heating mat: 8m²
B) Select undertiles heating Cable
Choose the right heating section according to the table below:
| Cable length | Power | Possible area with 6cm (200 W/m² spacing) | Possible area with 8cm (150 W/m² spacing) | Possible area with 10cm (100 W/m² spacing) |
|---|---|---|---|---|
| 11 m | 130 W | 0.7 m² | 0.9 m² | 1.3 m² |
| 18 m | 220 W | 1.0 m² | 1.5 m² | 2.2 m² |
| 25 m | 300 W | 1.5 m² | 2.0 m² | 3.0 m² |
| 39 m | 470 W | 2.4 m² | 3.2 m² | 4.7 m² |
| 63 m | 815 W | 3.8 m² | 5.0 m² | 7.6 m² |
| 86 m | 1040 W | 5.2 m² | 6.9 m² | 10.3 m² |
| 155 m | 1800 W | 9.3 m² | 12.4 m² | 18.6 m² |
The distance between the heating loops determine the wattage per m²
6cm = 200 W/m²
8cm = 150 W/m²
10cm = 100 W/m²
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