7 steps in preparation for w.c. (water closet) water-proofing





Completion of internal plaster of walls, leaving a margin of 18” from the final floor level of w.c. unit.

Completion of grooving/chasing for concealed G.I. piping/electrical conduit piping in W.C.

Completion of all concealed G.I. and electrical work in W.C.

Removing of all debris from W.C. and chiseling the extra mortar. If any, to expose the rare slab completely.

Completion of making holes in external walls for connecting nahani trap, P-trap, floor trap etc., to the external drainage line.

Thorough cleaning of W.C. with sufficient quality of water.


Level marking in red colour on walls, with respect to floor level to setup trap level.