It is essential that the base of the overhead tank and the RCC wall is poured in one go so that there are no joints in the concrete. Add Water Guard P 200 in concrete to minimize the water absorbent property of concrete.

Once the concrete for the overhead water tank has been poured and the form work removed, it is essential to remove all the metal strips and cover up the potholes using Patch 365 Plus. Cement and Sand to close up the pot holes.

Water Guard 491 is to be applied over the surface of the RCC concrete and the floor surface area. It is to be applied lavishly in 2 coats.

Note: First coat from left to right and second coat from top to bottom.

A flood test has to be taken prior to plastering over the tank to check if the coating has been done properly and that there are no leakages in the coating.

After the coating, a Smooth finished plaster which includes Ressi SBR 5850 and Silmix is to be done at the inside of the overhead tank.

A chamfer including Ressi SBR 5850 in the ratio of 1:3 with cement and sand is to be made between the floor level and the retaining wall of the overhead tank and a coating of Water Guard 491 is to be done over it.

The Application of Water Guard 491 can also be done over the plastered surface if needed and the plaster has already been done before hand. It is essential to make sure that the plastered surface is solid and crack free prior to the coating of Water Guard 491.

For Further information, please refer to our product Data Sheets.


waterproofing system for overhead tanks 2