KitchenFor kitchens, only heat the main area, so avoid the units, and if there is an island then measure around it. If the kitchen has a breakfast bar you may wish to heat beneath it in the footwell. If the kitchen is tiled and the units take up a large proportion of the floor, 25% or more, then using our 200W heating mats or 240W heating mats are the best choice for primary heating. If the kitchen is an irregular shape then to make the installation easier we would recommend using our 3mm heating cable.
BathroomBathrooms follow the same rules as with other rooms, measure around floor mounted fixtures and unless the bath is free-standing and has an air gap beneath it, measure around it. Similarly with boxing-in of pipework, deduct this area from the total. Unless the heating is being used only to take the chill from the floor we recommend with tiles using our higher output 200W or 240W heating mats. Up to 200W/sqm can be achieved with 3mm Cable if the room is irregularly shaped and a heating mat would be difficult to fit.
In no circumstances do we recommend using a percentage to calculate the deduction required for kitchen units or fixed furniture. With underfloor heating, the fitting space percentage deduction is only made after the deduction of units or fixed furniture.