In most cases the answer is YES. If you have an elevated home pipe can be retrofitted via so called diffusers below your timber floor. If you have a concrete based slab, the pipe is attached to a smaller style mesh profile and finished off with a concrete screed that can be tiled or carpeted. Retrofitting homes with Underfloor Heating is not a cheap exercise. If you are looking at efficiently heating your home with radiant heating you should ask about radiator retro fit systems.