An aerospace surface heating apparatus includes opposing layers formed from a thermoplastic containing in excess of 20% by volume of an inorganic filler material, and at least one electrically powered heating element located between the opposing layers. A method for making a heater for an aerospace component includes forming an electrical heating element on a layer of glass fiber reinforced thermoplastic film substrate, applying two opposing thermoplastic layers on opposing sides of the intermediate layer, and applying heat and pressure to the layers to join the layers together, in which the thermoplastic material contains an inorganic filler material.