FLOORING MATERIAL

PROBLEM TO BE SOLVED: To provide a flooring material capable of preventing contraction in entire floor which is not fixed to a base even when dimensional change occurs in flooring material body.SOLUTION: A spline joint 20 includes: a connection part 21 which is disposed being bridged between neighboring flooring material bodies 10, 10; and an engaging part 22 which has a dimension larger than the thickness dimension of the connection part 21, and which is integrated with each of both ends of the connection part 21. The flooring material body 10 has a concave groove 12 which is formed in a side end face 11 on the edge thereof, in which a part of the spline joint 20 is to be embedded therein. In an inner part 10b of the concave groove 12, an engagement concave 13 which is engaged with the engaging part 22 is formed. The connection part 21 of the spline joint 20 is formed of a material expandable along a direction connecting the engaging parts 22, 22.SELECTED DRAWING: Figure 1 【課題】下地に固定しない施工方式であっても、床材本体に寸法変化が生じても床全体として収縮するおそれのない床材を提供することにある。【解決手段】雇い実２０は、隣接する床材本体１０、１０間に架け渡すようにして配される連結部２１を有し、連結部２１の両端のそれぞれには、連結部２１の厚さ寸法よりも大きい寸法の係合部２２が一体化された構成とされており、床材本体１０の辺縁部の側端面１１には、雇い実２０の一部が埋設される凹溝１２が形成され、凹溝１２の奥部１０ｂには係合部２２と係合する係合凹部１３が形成されており、雇い実２０の連結部２１は、係合部２２、２２間を結ぶ方向に沿って伸長することが可能な材料で形成されている。【選択図】図１