METHOD FOR FIXING THERMAL INSULATING MATERIAL TO INTERIOR FINISHING SUBSTRATE PANEL AND INTERIOR FINISHING SUBSTRATE MATERIAL

PROBLEM TO BE SOLVED: To provide a method for fixing a thermal insulating material to an interior finishing substrate panel and an interior finishing substrate material, eliminating the generation of a gap between the thermal insulating material and the interior finishing material, the reduction of an adiabatic effect, and the occurrence of dew condensation. SOLUTION: In the interior finishing substrate panel A, a plurality of supporting sash bar members 2 are fixed on one side of the interior finishing substrate material 1 along a vertical direction by means of screws 7. The thermal insulating material 3 is disposed between the members 2 and 2, and the surface of the material 3 is covered with a permeable waterproof sheet 4. Pressing sash bar members 5 are fixed in the positions corresponding to the members 2 on the surface side of the sheet 4. The material 3 is installed in such a manner as to protrude farther on the surface side of the sheet 4 than the members 2, and the sheet 4 is fixed under tension.