Patent ID: 8793948

Claim:
A method of constructing a building comprising a plurality of external walls, a roof and a floor, said method including: erecting a plurality of truss elements to form a framework comprising at least two opposed external wall structures, a roof structure and a floor structure, each of said at least two opposed external wall structures, said roof structure and said floor structure comprising multiple truss elements, and each of said multiple truss elements including at least two joists and a plurality of braces that maintain the at least two joists in a parallel arrangement, each of said multiple truss elements being arranged in said framework to provide an inner joist and an outer joist; attaching an inner covering layer and an outer covering layer to said framework, thereby forming a floor void within the floor structure, a roof void within the roof structure and a wall void within each of the opposed external wall structures, said floor void, roof void and wall void being interconnected to form an enclosed void between said inner covering layer and said outer covering layer that extends continuously through the floor structure, the roof structure and the at least two opposed external wall structures, said inner covering layer comprising boarding attached to said inner joist and said outer covering layer comprising boarding attached to said outer joist of said framework, and after forming the enclosed void, injecting an insulating material into said enclosed void, the insulating material flowing continuously between the floor void, roof void and wall void to at least partially fill the enclosed void and form an insulating layer between the inner covering layer and the outer covering layer that extends continuously and seamlessly through the floor structure, the roof structure and the at least two opposed external wall structures.