@@seemaab The weight of the water can cause the bath to drop by a few mm, so if you do it without filling the bath, the first time someone runs a bath the sealant will come away from the strip and cause water ingress.
@@seemaab I don't see why not from a practical standpoint, it will still seal the area, but it all depends on the gap to be filled, for instance I have an old cast Iron bath which is beveled on the edges, so the gap between bath and tile is quite substantial, so just to fill it with silicone won't look good, with the 20mm bead I would need haha.
