Abstract: Foamed construction apparatus and method wherein the walls of existing structures are used as one side of a form and a second form is attached either to the outside or the inside of the existing wall and spaced therefrom with suitable spacers and then filled with an expanding foam so as to substantially improve the insulating properties of the structure as well as to change its internal and/or external appearance. The insulating properties of the foam substantially increase the efficiency of the structure and the technique results in new and improved external and internal appearance of the structure.