Waterproofing Cost Per Sq Ft in Delhi & NCR (2026)
"Waterproofing cost per sq ft" doesn't have one single answer, because there isn't one waterproofing system — there are several, each suited to a different kind of surface and problem, at a different price point. Here's how they compare.
| System | Starting price | Best suited for |
|---|---|---|
| Integral (admixture) | ₹15/sq.ft equivalent | New RCC construction, basements |
| Cementitious | ₹45/sq.ft | Bathrooms, toilets, water tanks |
| Bituminous / Tar | ₹50/sq.ft | Budget roofs and foundations |
| Acrylic Elastomeric | ₹55/sq.ft | Terraces, balconies, exterior walls |
| APP Membrane | ₹70/sq.ft | Large, stable commercial roofs |
| SBS Membrane | ₹75/sq.ft | Older roofs, roofs with movement |
| PU (Polyurethane) | ₹80/sq.ft | Cracks, pipe-heavy surfaces, premium seamless finish |
| Injection | ₹700/running metre | Active leaks, concrete cracks |
Why "starting from" and not a fixed rate
The actual price for your roof or bathroom depends on things a flat rate can't account for: existing cracks, whether old coating needs removal first, slope and drainage condition, parapet treatment, and total area. Two terraces of the same size can genuinely cost differently depending on their current condition — which is why we confirm the real number after a free site inspection rather than quoting blind.
How to think about which system you need
- Small wet areas (bathroom, tank) → Cementitious is usually the most cost-effective and appropriate.
- Open terrace with sun exposure → Acrylic Elastomeric for flexibility against UV and weather.
- Large flat commercial roof, stable structure → APP Membrane.
- Older building or visible roof movement → SBS Membrane, for its flexibility in cooler weather.
- Cracks or complex pipe penetrations → PU, for a fully seamless finish.
- Active, visible leak right now → Injection, as a targeted immediate fix.
- New construction → Integral admixture, built into the concrete itself.
Get an accurate quote for your surface
Prices depend on your surface condition — send photos on WhatsApp for a free site inspection.
Ask About Waterproofing