Step 1. Take
out the present Western Commode pan tiles, break open the existing brick bat
coba and I.P.S toilet/bathroom, and find the bare slab.
Step 2. Sprinkle
the crack with water and rub in a bonding coat of special waterproofing
chemical and cement slurry in the ratio of 1:0.5 in the indentation.
Step 3. Inside
30 minutes of applying of the Bonding Coat, prepare and apply by hand another
special waterproofing chemical using it in the proportion of 2 Kg , 5 Kg
cement, and 15 Kg graded quartz sand. Do not add any water to this mortar; and
this has to be a wet-on application.
Step 4. Air
Cure the surface for 48 hours.
Step 5. Sprinkling
water for 3-4 days
Step 6. Clean
the slab of all dust, dirt, oil, grease, grime, etc.
Step 7. Drill
holes in the slab and fix nipples and inject grout by mixing 5% of two special
waterproofing chemicals, both per bag of cement. Add water as a least possible
for flow ability. After grouting is finished, cut and seal the nipples with
Polymer Modified Mortar.
Step 8. Prepare
slurry using 1 Kg of special waterproofing chemical and 0.25 Kg of cement and
apply by brush on the bare slab. Mixing should be done using a low-speed
stirrer to form a lump-free consistency. No water is to be added; prepare as
much slurry as possible in 30 minutes.
Step 9. After
24 hours, apply a second coat of similar slurry of the same proportion.
Step 10. Air
Cure the surface for 48 Hrs.
Step 11. Cure
the coating with damp gunny bags for 4-5 days.
Step 12. Apply
the third slurry coat using 1 Kg of special waterproofing cement and 0.25 Kg of
Cement and apply by brush on the second coat. No water is to be added.
Step 13. While
this coat is wet and tacky, lay the cement mortar to provide brick bat coba and
this has to be a wet-on-wet application. Introduce another special
waterproofing chemical per 50 kg bag of cement in the mortar mix for brick bat
coba.
Step 14. Proceed
with providing straight brick bat coba. I.P.S. over the slab and fix tiles/pan
as per necessity. Add 330 grams of special waterproofing chemical pouch in the
cement mortar mix of the I.P.S. to minimize the shrinkage cracks on the I.P.S.
