Underground Water Tank Waterproofing

Procedure for underground water tank waterproofing

Chipping of all uneven surfaces to make the surface smooth.
Grinding the surface to make it free of any undulations and preparing the surface for waterproofing.
Haunching the bottom of the tank with a repair mortar.
Negative pressure grouting – Drilling holes with a spacing of 1mtr between each hole, to form a grid system . The spacing will differ based on structure conditions.

Inserting sockets and packing them with a special mortar system.
Negative pressure grouting using a cementitious grout and a high-pressure grouting machine.
On completion of negative pressure grouting apply the first coat of a suitable waterproofing compound and allow it to dry.
Applying two more coats of a suitable waterproofing compound and allowing it to dry.
Once the coat is dry, a smooth coat of food-grade solvent-free epoxy is applied.
Ponding the underground water tank for a period of seventy-two hours to check for any leakages.

Our inspection team will visit your site and will asses the construction plan and will suggest solutions accordingly.