| 摘要 |
PROBLEM TO BE SOLVED: To provide a floor material which can prevent overflow of adhesive to the upper surface of the floor material upon construction and therefore can be effectively constructed and which enables joinability and fixing stability thereof to be improved. ! SOLUTION: The floor material has a female tongue part 20 and a male tongue part 10. A groove part 21 for nailing is formed in an upper surface of a lower protruding part 24 of the female tongue part 20. The groove part 21 has a shape enabling an adhesive to be accumulated and held therein to the extent that a head part 5a of a nail 5 driven in the groove part 21 is immersed in the held adhesive. A protruding part 11 which is inserted in the groove part 21 and protrudes downward is formed in the lower surface of the male tongue part 10. In the groove part 21, a space 7 is formed for housing the head part 5a of a nail 5 driven between the groove part 21 and the protruding part 11 inserted into the groove part 21, of an adjacent floor materia |
