Just a query about what flooring or products best to use. Just ripped out an unusable kitchen and broken 1980's tiled floor. Underneath part of the floor is terracotta presumably laid on earth, part is solid black ? Part is vile green speckled tiles. Accompanying this were 100000's silverfish and some millipedes. No visible damp to walls though and property has been dpc'd. So just wondering what is best to lay on floor for a busy kitchen? I understand it needs to be breathable. Im thinking about insulation boards a heatmat and kitchen laminate ? Digging out is not an option. Anyone have any advice or suggestions please ? House was built in 1900.