Modular building

Claim 1

A modular builiding having wall panels and roof panels formed of an insulating material; a surface of said wall panels and roof panels covered with metal sheeting; an extending edge of each panel formed into a corner joint; said corner joint cooperating with adjacent panel for joining a first upright wall and a second upright wall at a corner comprising: the first and second upright walls abutting at a right angle at a corner along an abutting edge; the abutting edge having a forty five degree angle; a tongue and groove joint formed along the abutting edge; a corner clip comprising a first leg abutting the first upright wall and extending to the corner, a first inner leg formed by bending the first leg inward abutting the abutting edge, the first inner leg passing over the tongue and groove joint in a complimentary manner, the first inner leg then being bent outward to engage the first upright wall and then being bent inward to form a first notch engaging extension, a first notch formed along the first upright wall to snugly receive the first notch engaging extension, a cross over segment formed by bending an inner end of the first notch engaging extension toward the second upright wall, a second notch engaging extension which is a mirror image of said first notch engaging extension formed by bending an end of the cross over segment toward the corner then inward, a second notch formed along said second upright to receive the second notch engaging extension, an inner end of the second notch engaging extension bent to extend outward forming a second inner leg abutting the first inner leg, an outer end of the second inner leg is then bent to form a second leg abutting second upright wall; and the first leg biased inward toward the first upright wall, the second leg biased inward toward the second wall to hold the first and second walls in abutment.