Anybody put electric underfloor heating directly onto concrete floor?

[trixymalixy]

We are trying to minimise the increase in floor height in our hallway as it will look odd against the bottom step, so are thinking of laying the mats directly on the concrete.

Everything I have read says that you don't necessarily have to insulate under the underfloor heating, but there will be some heat loss.

has anyone got any eperience of this they could share?

Hi, We laid electric underfloor heating on concrete and had insulation mats between the EUH and concrete. These mats aren't very thick, around 1cm thick, so you're not losing too much height. What are you laying on top? We laid engineered floorboards which were roughly 2cm thick. The EUH mats are also very thin.

What surface are you putting on top? If it is something that conducts heat well, like tiles then can get away without insulating.

However with wood or engineered wood, which is mostly not even recommended for using with underfloor heating due to poor heat transferance, you would definitely need insulation.