To recover a predetermined shape of a sealing member after laying it to ensure airtightness between members by mounting a recovery prevention member for preventing the shape recovery of the sealing member comprising a closed-cell foam having the shape recovering property with a lengthy shape in the thickness direction on a member having a recessed portion on the surface.

A member to be sealed 11 is provided with a recessed portion 111 having a U-shaped cross section on the surface. A sealing member 12 comprises a closed-cell foam having the shape recovering property with a lengthy shape at least in the thickness direction, and is compressed to the shape having a height corresponding to the depth of the recessed portion 111. The sealing member 12 is mounted in the recessed portion 111 of the member to be sealed 11, and in order to prevent the shape recovery of the sealing member 12, a recovery prevention member 13 applied with an adhesive 14 on all the surface of one side is covered with the surface of the sealing member 12 such that the surface applied with the adhesive 14 is directed thereto, the peripheral portion of which is attached to the peripheral surface of the recessed portion 111 of the sealed member 11 through the adhesive 14, thereby forming a laminate 1.