System for mounting wall panels to a wall structure

A system for mounting wall panels to an existing wall structure, comprising:

• a plurality of wall panels, each wall panel including:
• a main wall panel having an outer facing surface, and
• at least two bent end sections extending at an angle from different edges of said main wall panel, each bent end section having a wall thickness;
• and
• at least one main fastening extrusion, each fastening extrusion including:
• at least one base section adapted to be secured to the existing wall structure,
• two spaced apart flexible and resilient bent end securing walls extending at an angle from said at least one base section, the two bent end securing walls having a first spacing therebetween substantially greater than the wall thickness of two said bent end sections, and
• at least one further wall positioned between said spaced apart bent end securing walls, with a second spacing between said at least one said further wall and each bent end securing wall being substantially equal to the wall thickness of one said bent end section such that facing surfaces of two bent end sections assembled between said at least one further wall and respective said bent end securing walls are parallel with each other and out of contact with each other and spaced apart by a gap equal to at least a width of the at least one further wall from each other entirely along said facing surfaces thereof, said at least one further wall having a distal end that extends to a position spaced from said outer facing surfaces when said wall panels are assembled with said main fastening extrusion;
• a cut-out recess at a first surface of at least one said bent end section which faces a second surface of a respective said bent end securing wall;
• a projection at the second surface of each said bent end securing wall that faces a respective said cut-out recess, with a third spacing between the projection of each bent end securing wall and the at least one further wall being less than the wall thickness of one said bent end section;
• wherein pressing of each said bent end section into a respective said second spacing between one said bent end securing wall and said at least one further wall causes said bent end securing wall to be biased away from said at least one further wall until the respective said projection engages in a respective said cut-out recess to permit said bent end securing wall to spring back to lock said bent end section in said second spacing, with the two bent end sections being completely out of contact with each other.