Process for surface and environmental heating of building structures and infrastructures obtained by formation of a thermoelectric layer (210) placed behind the surface finish of walls and especially underneath the flooring of structures, by means of a polymer-bitumen strip with a metal core of extremely high electric conductivity, of a constant section and micrometric thickness, laid in lengths side by side sufficiently spaced for electrical insulation, by the ends of each length being bent back in a double bend (214) at 45°, thus permitting, by closure of said metal core in an electric circuit, transformation of electric energy into thermal energy.