Abstract: The present invention relates to an electrically conductive fluid or semifluid material for covering a surface and suitable in particular for radiant heating. Said material contains, in characteristic manner, in a binder for surface covering: 20% to 80% by weight of conductive fillers constituted by a flaky inorganic medium coated by a powder based on a double oxide or on a mixture of double oxides; said double oxide(s) satisfying the formula A.sub.x B.sub.1-x O.sub.1/2(5-x), in which 0<x<1, A is selected from Ge, Sn, Pb; and B is selected from As, Sb, and Bi. The present invention also provides the use of said conductive fillers for making such electrically conductive fluid or semifluid materials, and the use of said fluid or semifluid materials.