Will my floor levels increase when I install underfloor heating?

Yes, inevitably you will have to make an allowance for increased floor levels, unless you want to go through the pain of digging your floor out! Fortunately our underfloor heating systems are low profile therefore the increase will be minimal. Our ribbon electric underfloor heating mat is only 1.8mm thick and the carbon film system is less than 1mm. Take into account the 6mm Therm-all insulation then your total increase will be at worst less than 8mm.