No, it would be best if you did not use plastering tape on a damp surface. Plastering tape is designed for dry surfaces, as moisture can weaken the bond between the tape and the surface. If you apply plastering tape to a damp surface, it may not stick properly, leading to a weak and ineffective joint. Before applying the plastering tape, ensure the surface is dry and free from moisture or dampness. If the surface is damp, you should wait for it to dry completely before applying the tape. In some cases, it may be necessary to address the source of the dampness and fix any leaks or moisture issues before proceeding with the plastering.