Absolutely! DuroDesign cork flooring can be used with radiant floor heating systems.
Cork is a naturally resilient material, unaffected by changes in temperature.
Cork's natural insulating properties help a concrete radiant floor feel warm to the touch even when the heating system is off. A ceramic tile floor, however, becomes as cold as the concrete slab.
Yes, cork slows the transmission of heat slightly from the slab below, but no more than a wood floor. Besides, a radiant floor heating system is not meant to be a fast-response heating system - but based on steady radiation from a thermal mass.