INSULATION UNDERFLOOR STRUCTURE AND CONSTRUCTION METHOD FOR INSULATION UNDERFLOOR HUMAN PASSAGE OPENING

摘要

PROBLEM TO BE SOLVED: To provide an insulation underfloor structure that is easy to construct and includes an inlet 31 having a high thermal insulating property.SOLUTION: There is provided a foundation 12 for partitioning off an underfloor space. An aperture 15 for constituting part of a human passage opening is previously formed on the foundation 12. A foundation insulation material 14 is made to adhere to the foundation 12's underfloor space side. A frame body 30 forming a frame of an inlet 31 is mounted on the aperture 15 of the foundation 12. A lid body 40 is detachably fitted to the inlet 31 on the frame body 30. The foundation insulation material 14 includes an extension part 17. The extension part 17 constitutes an edge of an outlet 16 and protrudes widthwise inside of the aperture 15's edge to face the frame body 30's rear surface through the aperture 15. The frame body 30 is mounted on the aperture 15 by connecting the frame body 30's rear surface with the extension part 17.SELECTED DRAWING: Figure 2