Procedure for Sunken Portion Waterproofing

Toilets and bathrooms are the most sensitive areas in the structure with regards to waterproofing due to presence of continuous moisture on it. Leaking bathrooms not only annoys you but also causes huge inconvenience to your neighbours in the floors below. Dura's waterproofing range makes sure protects your bathroom ans kitchens from leakage.

    1. Complete all the block work for the kitchen/toilet areas.
    2. After completion of block work mark the level pads in the walls.
    3. Clean the surface free from dust, loose material etc.
    4. If required provide & fix 12mm dia. GI Nozzle @1.5 mt. c/c on the entire area of the sunken portions. Apply chemical injection grouting through the nozzles with cement slurry admixture with DURA EV (Non shrink Polymeric grouting compound) with 40 PSI Pressure pump. Seal off the nozzle and cutting the same after the grout has set.
    5. Make Angular fillets or Gola with cement sand mortar (1:3) admixed with diluted DURAKRIT (1 Durakrit: 3 Water) at the junctions of the wall.
    6. Wet the surface with water to make it SSD condition.
    7. Apply one coat of DURAKRIT- Acrylic Polymer Modified Cementatious (PMC) slurry coating as per manufacturer specification 1:2 (1 DURAKRIT : 2 cement) by weight on the sunken floor surface; turned up and finished up to 100mm from FFL.
    8. Apply second coat of DURAKRIT - Acrylic Polymer Modified Cementatious slurry coating as per manufacturer specification 1:2 (1 DURAKRIT : 2 cement) by weight over the first coat at right angles. The second coat is usually applied after first layer slurry coat has touch dried usually after 4 hrs.
    9. Ponding Test for water leakage will be carried out as per IS 3370 part 1 for seven days as instructed.
    10. Drain out the ponded water and then provide 20 mm protective plaster cement: sand mortar (1:4) admixed with Integral Waterproofing compound DURA 1 @ 1 kg per bag of cement on top of the second coat as in 5.8.
    11. Water and waste pipes to be provided according to proper level & slope. Seal off the pipes for further testing.
    12. After Plumbing & Sanitary work will be executed /inspected & tested as per Drawing.
    13. Next backfill the gap between the protective plaster (as per 5.10) and finished surface level with loose/light weight materials like pumice stone, light bricks, etc.
    14. Light weight material voids to be filled up to the desired level with 25mm plain cement concrete after placement of the required pipes/fittings to the desired slope and level. This shall be followed by finishing with kitchen/toilet tiles.