Patent ID: 8151539

Claim:
A prefabricated building panel comprising a foam body having one or more apertures, upper and lower end walls, side end walls, one or more channels in the upper and lower end walls to locate about top and bottom track members, and a plurality of slots or a channel or a protrusion formed in each side end wall , a surface portion adjacent each of the side end walls on one or both sides of the foam body being chamfered; one or more structural members each of which is positionable in one of the one or more apertures to provide structural integrity; whereby in use the one or more structural members are positioned and substantially enclosed within the foam body to form the building panel, the building panel is locatable on the top and bottom track members and engageable with adjacent building panels by complementary or flush side end wall configurations and the chamfered surface portions on adjacent building panels allow a flush and continuous finish to be formed when the panels are joined, wherein in use adjacent corner building panels each have a mitered longitudinal side edge and two C-shaped structural members are joined so that outward extending flanges of the C-shaped structural members are locatable in adjacent corner building panels so that the corner panels are joined to form a structural corner.