To provide a fire-resistive complex building material and a fire- resistive composite floor material, which use a porous inorganic core material as a floor material, have high strength, are lightweight, have excellent fire resistance and workability and can be employed in a multipurpose manner.
Reinforcing layers 4 consisting of a thermosetting resin and inorganic fibers are bonded with at least one of the surface 71 or rear 72 of a porous inorganic core material such as a gypsum board 3. The fire-resistive complex building material 7 has through-holes 11. The fire-resistive complex building material 7 may also have a stepped section and a notched section. It is preferable that the porous inorganic core material contains organic components.
OGAWA TETSUJI
SATO KENJI
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