Sorry, a question asked out of ignorance. Please explain to me what the benefit is though? In my brain it defies logic, like putting your radiator behind a wall. Why would you put a barrier there? Isn’t it better to have the heat source IN the room? Surely it uses a lot more energy because the heat has to travel through the floor? And if you’re a bit chilly or a bit too warm you can’t moderate how much heat you feel by getting closer / further from the radiator. You’re stuck with the air temperature at whatever it is, and what if you’re a person who feels the cold while your partner always feels too hot? Obviously there must be benefits but I genuinely can’t see where?