A dam element for the damming of a structure element within a vehicle includes a support element and an expandable element. The support element consists of at least one printed strand of a first material, where the first material is in a solid physical state at least up to a temperature of from 120° C. to 200° C., and the expandable element consists of at least one printed strand of a second material, where the second material is expandable at a temperature between 120° C. and 200° C. The dam element here has, at a point of greatest thickness, measured perpendicularly to a plane of the dam element, at least two, and at most ten, mutually superposed layers.