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 section, and
• at least two bent end sections extending at an angle from different edges of said main wall panel section, each bent end section having a wall thickness;
• a plurality of main fastening extrusions, each main fastening extrusion including:
• a base section adapted to be secured to the existing wall structure, and
• first and second spaced apart bent end securing walls extending at an angle from said base section, the two bent end securing walls having a spacing therebetween greater than the wall thickness of two said bent end sections,
• one of:
• a recess at a first surface of each bent end section which faces a second surface of a respective said bent end securing wall, and a projection at the second surface of each bent end securing wall which is adapted to be received in a respective said recess;
• and
• a recess at the second surface of each bent end securing wall, and a projection at the first surface of each bent end section which is adapted to be received in a respective said recess at the second surface;
• at least one flexible and resilient removable plug for holding one said bent end section connected to said first bent end securing wall, each said plug including:
• a retaining section, and
• a biasing section for biasing said retaining section against said one bent end section in a direction toward said first bent end securing wall, with the respective projection held in the respective recess,
• said biasing section including one of:
• a biasing section projection which is adapted to be removably received in a said recess of the second bent end securing wall, and
• a biasing section recess which is adapted to removably receive a said projection of the second bent end securing wall.