HEAT INSULATION METHOD OF UNDERFLOOR SPACE AND HEAT INSULATION STRUCTURE OF UNDERFLOOR SPACE

摘要

To provide a heat insulation method of an underfloor space and a heat insulation structure of an underfloor space capable of constructing a floor heat insulation reform in an existing building for reducing a heat loss from a floor and improving a heat insulation performance easily.SOLUTION: The invention is a heat insulation method of an underfloor space having an underfloor ventilation port at a rise part of a foundation of a building. The heat insulation method of the underfloor space comprises: an insertion process for inserting a bag body expanding in a column shape when filled with liquid in a state of pre-expansion through the underfloor ventilation port to inside of the underfloor space; an arrangement process for arranging the bag body to be along an outer periphery of the underfloor space; and a filling process for filling the inside of the bag body with a heat insulation material having fluidity from the underfloor ventilation port to form the heat insulation member in a column shape.SELECTED DRAWING: Figure 7