If you live in Mumbai, Thane, or Navi Mumbai, you know the horror story: paint peeling on the wall shared with the bathroom, or worse, the downstairs neighbor complaining about water dripping from their ceiling.
In our humid coastal climate, a standard tiling job isn’t enough. The secret to a bathroom that lasts 20 years isn’t just the tile, it’s what lies beneath the tile.
At Civil Creation, we specialize in “Wet Area” engineering. Here is our complete guide to waterproofing and tiling your bathroom so it never leaks again.
Why Do Mumbai Bathrooms Leak?
Most leakage issues in our region happen for three specific reasons:
- Grout Failure: The white cement between tiles cracks over time due to thermal expansion (hot water showers vs. cold weather).
- Sunken Slab Issues: The “hidden” area under your bathroom floor collects water if the drainage pipes aren’t sealed properly.
- The “Brickbat Coba” Myth: Many old contractors in South Mumbai and Thane still rely on traditional brickbat (brick pieces) for waterproofing. While cheap, it often cracks under building vibrations, rendering it useless.
The Civil Creation Solution: The 3-Layer Protection System
We don’t just “lay tiles.” We build a waterproof shield. Here is the process we follow for every bathroom renovation:
Step 1: Base Preparation (The Ipoxy Method)
First, we dismantle the old flooring down to the concrete slab. We then apply a Polymer-Modified Cementitious Coating (often using Dr. Fixit or Asian Paints SmartCare).
- Why? This flexible membrane stretches with the building’s movement and blocks water from reaching the downstairs neighbor.
Step 2: The “Khura” (Slope) Technique
Water must leave the bathroom instantly. We create a steep, laser-guided slope towards the drain trap.
- The Test: Before laying tiles, we fill the bare floor with water and let it sit for 48 hours (Ponding Test). If the water level drops, we know there is a leak, and we fix it before wasting money on expensive tiles.
Step 3: Anti-Skid Tiling & Epoxy Grouting
For the top layer, we recommend Matte-Finish Anti-Skid Tiles to prevent accidents. But the real magic is in the joints.
- Epoxy Grouting: Unlike white cement, Epoxy is plastic-like. It is 100% waterproof, stain-proof, and chemical-resistant. It seals the gap between tiles so tightly that water cannot penetrate.
Cost of Bathroom Waterproofing in Mumbai (2025 Estimates)
Many clients ask, “Why does waterproofing cost extra?” It’s an investment in peace of mind.
| Service | Estimated Rate |
| Dismantling Old Floor | ₹25 – ₹35 per sq. ft. |
| Waterproofing Coating (2 Coats) | ₹45 – ₹65 per sq. ft. |
| Tile Installation (Labor) | ₹55 – ₹75 per sq. ft. |
| Epoxy Grouting | ₹35 – ₹55 per sq. ft. |
Note: For a standard 4×7 ft bathroom in Thane or Mumbai suburbs, full waterproofing + tiling labor typically ranges between ₹25,000 to ₹40,000 (excluding tile cost).
Do You Need a Full Renovation?
Not always.
If your tiles are in good condition but you see dampness on adjacent walls, we might be able to fix it with Epoxy Regrouting, removing the old cement joints and filling them with epoxy. This is a faster, cleaner solution popular in rented apartments in Navi Mumbai.
Don’t Let a Leak Ruin Your Home
A leaking bathroom destroys your walls, your furniture, and your relationship with your neighbors.
Contact Civil Creation for a professional inspection. We check moisture levels, identify the leak source, and propose a permanent fix.
Call/WhatsApp: +91 97027 22748
Serving: Mumbai, South Mumbai, Thane, Navi Mumbai.
