PROBLEM TO BE SOLVED: To provide a prefabricated sauna in which detachment/attachment of a hook-and-loop fastener between a base member and a cover member is easily made possible, and an attachment state of the hook-and-loop fastener is not easily detached by the movement of a human body.SOLUTION: A prefabricated sauna is configured as follows: an underside joining fastener 5 is mounted upward in the lower surface of a base member 2 in a connection part between a cover member 3 and the base member 2 an inserted part 7 is provided between the base member 2 and the underside joining fastener 5 an upper side surface joining fastener 6 is mounted downward in both side ends of the cover member 3 the upper side surface joining fastener 6 of the cover member 3 is inserted into the inserted part 7 and the underside joining fastener 5 is joined with the upper side surface joining fastener 6.SELECTED DRAWING: Figure 13COPYRIGHT: (C)2018,JPO&INPIT【課題】ベース部材とカバー部材の間の面ファスナの脱着が簡単に行えて、かつ面ファスナの接着状態が人体の移動等によって簡単に外れない組立式サウナを提供する。【解決手段】カバー部材3とベース部材2との連結部において、前記ベース部材2の下面に下側面接合ファスナ5を上向きに取り付け、前記ベース部材2と下側面接合ファスナ5との間に被挿入部7を設け、前記カバー部材3の両側端部に上側面接合ファスナ6を下向きに取り付け、前記カバー部材3の上側面接合ファスナ6を被挿入部7に挿入して、前記下側面接合ファスナ5と上側面接合ファスナ6とを接合する構成とした。【選択図】図13