Paint hides a damp wall for one season; waterproofing fixes it for ten. Whether it's a terrace that soaks every monsoon, a bathroom that stains the ceiling below, or a basement that sweats — the cure is treating the source with the right membrane or coating system, not another coat of putty.
TrueInstaller connects you with verified waterproofing contractors who diagnose before they quote and back their systems with real warranties.
Problems we treat
- Terrace & roof leakage — acrylic/PU membrane systems and app-membrane treatments with slope correction.
- Bathroom seepage — the #1 cause of ceiling stains below; fixed with tile-safe chemical systems.
- External wall damp — crack bridging and elastomeric wall coatings that flex with the sun.
- Basement & tank leakage — crystalline and injection-grouting treatments for pressure-side water.
- Expansion joints — the sneaky leak path in societies, sealed with PU systems.
Indicative pricing
| Treatment | Approx. price (per sq. ft.) |
|---|---|
| Terrace acrylic membrane (2–3 coats) | ₹45 – ₹80 |
| Terrace PU / app membrane system | ₹90 – ₹160 |
| Bathroom waterproofing (during renovation) | ₹80 – ₹150 |
| Injection grouting (per point) | ₹350 – ₹800 |
System choice depends on the diagnosis — post your requirement for an inspected quote with warranty terms.
How it works
- Post your requirement — where the leak/damp shows, and your city.
- Inspection — source traced (often not where the stain is), system and warranty proposed.
- Surface preparation — cracks routed and filled, surface cleaned; the step that decides longevity.
- Application & test — coats applied at spec thickness, ponding test before handover.
Video guide
Frequently asked questions
Why does the leak show far from its source?
Water travels along slabs and conduits before dropping — that's why treating the stain fails. A proper inspection traces the actual entry point.
What warranty should I expect?
5 years is standard for terrace membrane systems, up to 10 for premium PU builds — insist on it written into the quote.
Can waterproofing be done without breaking tiles?
Often yes — penetrating chemical systems and grout injection treat many bathroom and wall cases tile-on.
Related services: Plumbing Services · Skylight Waterproofing · Polycarbonate Roofing · False Ceiling