In case the leakages are
nominal, then grouting at suitable locations with polymer-cement slurry would
be likely to solve the problem. Otherwise, the entire bathroom or toilet would
require to be renovated.
SECTION THROUGH BATH ROOM
SECTION THROUGH W.C.
Remove the existing W.C. Pan,
tiles, plumbing etc. from the toilet or bathrooms. Clean the R.C.C. slab of
cement laitance, loose material and dust, prepare a cementitious grout modified
by 150 ml Sunpolicrete (NGT) and 2.5 kgs. of Polyalk EP both per 50 kgs. bag of
cement. Restrict the quantity of water to minimum. Infuse this grout preferably
under pressure of about 2 kg/cm2.
Prepare a lumpfree consistency
slurry of Polyalk WP and cement in proportion of 1:1.5 (by weight) and apply
this slurry to the area to be waterproofed. Care should be taken that no area
remains uncoated. Apply one more coat of similar slurry keeping an interval of
24 hours between two successive coats. After 48 hours cure the coating by
sprinkling water for 2-3 days. Provide a levelling course of 1:4 cement mortar
in thickness of 10-15 mm if required. Finish the surface as per requirement.
Note: Refix the pan, tiles,
plumbing etc. Prepare as much quantity of slurry which can be used within 30-45
minutes.
