A construction method for insulating a building exterior using a lightweight stone insulating panel, the construction method comprising the processes of:
- fixing an L-shaped anchor (200) provided with a vertical portion (210) and a horizontal portion (220) on a building exterior wall, the horizontal portion (220) having a first coupling hole (221);
- fixing a bracket (300) to the horizontal portion (220) of the L-shaped anchor (200), the bracket (300) comprising a horizontal support portion (310) having a second coupling hole (311), an upward fixing portion (320) bent upward from a front end of the horizontal support portion (310), a downward fixing portion (330) bent downward from the front end of the horizontal support portion (310), an extending support portion (340) extending forward from the front end of the horizontal support portion (310), an upward support portion (350) bent upward at a rear end of the horizontal support portion (310) and having a slit (351) in which the horizontal portion (220) of the L-shaped anchor (200) is inserted, and a downward support portion (360) bent downward at the rear end of the horizontal support portion (310), wherein said fixing a bracket (300) to the horizontal portion (220) includes:
- i) passing the horizontal portion (220) through the slit (351), and ii) inserting a coupling pin (10) into the first coupling hole (221) and the second coupling hole (311) such that the coupling pin (10) passes through the horizontal portion (220) and the horizontal support portion (310);
- and
- fixing a plurality of lightweight stone insulating panels (100) to the building exterior wall using the bracket (300), the plurality of lightweight stone insulating panels including a first panel positioned above the bracket (300) and a second panel positioned under the bracket (300), each panel comprising an insulating board (110), a stone plate (120) attached to a front surface of the insulating board (110), and a reinforcing board (130) attached to a rear surface of the insulating board (110),
- wherein said fixing a plurality of lightweight stone insulating panels (100) includes:
- loading a lower end portion of the insulating board (110) of the first panel on the upward fixing portion (320) of the bracket (300) in a state that a rear lower end of the reinforcing board (130) of the first panel is supported on the upward support portion (350);
- inserting the upward fixing portion (320) of the bracket (300) into the lower end portion of the insulating board (110) of the first panel;
- loading an upper end portion of the insulating board (110) on the downward fixing portion (330) of the bracket (300) in a state that a rear upper end of the reinforcing board (130) of the second panel is supported on the downward support portion (360);
- inserting the downward fixing portion (330) of the bracket (300) and the coupling pin (10) into the upper end portion of the insulating board (110) of the second panel;
- and
- supporting the stone plate (120) by the extending support portion (340).