Building and method of constructing a building
A method of constructing a building including erecting a plurality of truss elements to form a framework including one or more walls, a roof structure and a floor structure. Each truss element includes at least two joists and a plurality of braces that maintain the joists in a parallel arrangement, the truss elements being arranged in the framework to provide an inner joist and an outer joist. An inner covering layer and an outer covering layer are attached to the framework, thereby forming an enclosed void between the inner and outer covering layers that extends substantially continuously around the framework. An insulating material is injected into the void to form a substantially continuous insulating layer between the inner and outer layers.
1. 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.
2. The method according to claim 1 , wherein at least some of the multiple truss elements that form the floor structure, the roof structure and the at least two opposed external wall structures are interconnected end-to-end to form a continuous framework that extends through the floor structure, the roof structure and at least one of the at least two opposed external wall structures.
3. The method according to claim 2 , wherein the truss elements that are interconnected end-to-end are located in a common vertical plane.
4. The method according to claim 2 , wherein the at least two joists include a plurality of inner joists and a plurality of outer joists, and wherein the plurality of inner joists are interconnected, and the plurality of outer joists are interconnected.
5. The method according to claim 1 , further comprising erecting a second plurality of truss elements to form at least one external end wall structure and attaching a second inner covering layer and a second outer covering layer to the external end wall structure to form an end wall void, said end wall void being connected to the enclosed void that extends through the floor structure, the roof structure and the opposed external wall structures.
6. The method according to claim 1 , wherein the inner covering layer and outer covering layer forming the enclosed void have a separation in the range 50-600 mm.
7. The method according to claim 1 , wherein the framework is supported on discrete piles or foundation pads.
8. The method according to claim 1 , wherein a damp-proof membrane is fitted beneath the floor structure.
9. The method according to claim 8 , wherein the damp-proof membrane extends at least partly up the opposed external wall structures of the building.
10. The method according to claim 1 , wherein the insulating layer in the roof structure is provided within a ceiling structure or within a sloping roof structure.
11. The method according to claim 1 , further comprising applying an external finishing layer to the outer covering layer of at least one of the opposed external wall structures.
12. The method according to claim 1 , further comprising applying an external finishing layer to the outer covering layer of the roof structure.