Extruded aluminum building materials are provided for the construction of a house or building. The extruded aluminum building materials include a plurality of I-beams, C-shaped beams, angled beams and interlocking shingles. The plurality of C-shaped beams provide a horizontal frame structure to receive the plurality of I-beams, which form the internal vertical framework of the building. At least one angled roof beam is positioned on upper ends of the I-beams in order to form an angled support for an angled roof. The angled roof may be formed of interlocking shingles, which releasably engage one another to form a continuous shingled roof surface. The extruded aluminum building materials are prefabricated and may be easily transported to a construction site for the easy and efficient construction of a building.