Warmly yours is one company that makes under carpet warming pads.
Warmest carpet pad.
The higher a carpet pad s r value the better it is at.
This is especially important for upstairs rooms but even in a basement a pad reduces sound more than a carpet alone.
A basement carpet pad will help hold off the feeling of cold and dampness that concrete basement floors can transfer the feeling of cold has always been one of the biggest drawbacks of concrete floors especially in the basement.
Less common carpet padding types are made of fibers such as polyester nylon or felt.
Padding has higher r value which measures a material s ability to keep heat from passing through it than carpet keeping the room warmer.
The r factor is how well the padding will prevent heat from moving from one place to another keeping cold areas cold and warm areas warm.
It is installed directly between the padding and flooring choice.
Their pads are very thin and can be installed under any type of floating flooring without cement which is not the case with other radiant heating systems.
Carpet padding dampens sound.