I'm interested in taking up old wool carpets and putting in cork. Has anyone here done that? There are reinforced types that don't dent. It's supposed to quite warm on the feet and fairly good for insulation. I would be interested to hear people's experiences. I'm concerned that the underflooring would have to laid perfectly to work in an old house. There seems to be lots of cork options and some modern innovations, but not as cheap as I might hope.