Wire harness waterproof structure

A wire harness waterproof structure comprising:

• a plurality of electrical lines each having an insulated covered portion insulated by a covering and an exposed conductor portion obtained by partially stripping away the covering, the plurality of electrical lines forming a splice portion by the exposed conductor portions being joined together;
• an exterior member that surrounds the entire circumference of the splice portion and a plurality of adjacent end portions of the coverings that are adjacent to the splice portion;
• and
• a curing layer made up of a water sealant with which a gap between the splice portion and the exterior member is filled,
• wherein the exterior member is formed by a waterproof sheet material that is curved so as to surround the splice portion and the adjacent end portions of the coverings, and
• the sheet material has a plurality of seeping holes that penetrate in a thickness direction with a predetermined pitch, and are open so as to allow a portion of the curing layer to exist at points on an outer surface in a region filled by the water sealant, and enable moisture to be drained to the outer surface in a region not filled by the water sealant.