Abstract: An energy-efficient, wood-skinned fire door having a laminate construction. There is a core panel formed of a fire-resistant material, preferably mineral fiber board. The perimeter frame around this has a channel formed in its inner edge for receiving the core panel in a close interfit therewith. This supports the panel in the channel, and also eliminates any direct path for a fire to proceed past the edge of the fire-resistant panel. Foil-covered thermal insulation panels are positioned on opposite sides of the core panel, and these are covered with wooden door skins. This provides a structure which is highly fire resistant and exhibits excellent insulation qualities, yet which is also aesthetically pleasing so as to be suitable for residential use.