We coat your tiled concrete balcony with a suitable waterproofing membrane, turning edges up onto walls and down into drains. If your balcony is constructed with Fibre Cement Sheeting, we use elasto-flex bandage for maximum strength and flexibility over the joints, turning the membrane over the edge, up onto the wall or floor joint, and into any waste outlets. See our article regarding balconies constructed using C.F.C Sheeting for more details.