Bathroom Leaking Into the Flat Below? Here's What Actually Fixes It
Most 'waterproofing' quotes in Hyderabad apartments solve the wrong problem. We break down the 3 real causes of bathroom leaks and what each one costs to fix.
Why 'full waterproofing' is usually the wrong answer
When the neighbour below complains, the first quote you'll get is ₹35,000–₹80,000 for 'full bathroom waterproofing' — which means breaking all your tiles. In our experience, 8 out of 10 apartment leaks are fixed for under ₹6,000 by identifying the real source first.
The 3 real causes (in order of frequency)
A one-hour dye test tells you which of these you're dealing with — insist on it before any breaking work.
- Grout failure between tiles (60% of cases) — regrout + sealant, ₹2,500–₹5,000.
- Loose fitting or worn washer at the concealed shower/tap valve (25%) — ₹800–₹3,000.
- Actual slab waterproofing failure (15%) — this is the expensive one, ₹25,000+.
What to demand before agreeing to break tiles
Before anyone lifts a chisel, ask for:
- A dye/ponding test with photos on WhatsApp, showing where water actually escapes.
- Written confirmation that grout and fittings were ruled out first.
- A quote for spot repair, not just full-bathroom pricing.
FAQs
Whose responsibility is a bathroom leak — mine or the flat below?
The source flat owner is responsible for the fix. The society usually mediates but doesn't pay.
How long does a proper regrouting job take?
4–6 hours for a standard 40 sqft bathroom, dry-time included. You can use it the next morning.
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