For non conducting materials, resistance would decrease with temperature. Heat is, more or less, agitation of molecules in a substance. If the temperature is great enough, electrons can be ripped from the atoms, thus allowing a current to flow.
It is very different. A "wire" is usually a conductor, whose resistivity increases with temperature due to increased scattering off the positive ions. A brick is usually an insulator (at room temp) whose resistivity decreases on heating, due to thermal excitations.
Look at this : https://www.physicsforums.com/showthread.php?t=72062&highlight=brick