By Om Parkash ·
Heavy monsoon rain in Bihar finds every weak spot in a roof, bathroom or wall. Proper waterproofing and small civil repairs done before the rains save you from damp walls, peeling paint and weakened slabs.
This guide explains the options, what drives the cost, and how to choose the best waterproofing and civil work near you in Patna — written from our experience delivering projects across the city.
Options to consider
- Roof waterproofing — Membrane or polymer coating over the terrace with proper slope to drains.
- Bathroom waterproofing — Treatment under tiles before re-tiling.
- Wall damp treatment — Rising damp and exterior crack repair.
- Boundary walls & plaster — New walls, re-plastering and structural repairs.
Civil Work & Waterproofing cost in Patna (2026)
Indicative price: On request. The final figure depends on the points below; we share an item-wise quotation after a free site visit.
- Area to be treated
- Type of system (cementitious, membrane, polyurethane)
- Condition of the existing surface
- Tile removal and re-laying
How to choose the best waterproofing and civil work in Patna
- Treat the roof in dry weather, ideally before June.
- Fix slope and drain outlets, not just the coating.
- Waterproof bathrooms before new tiles go down.
Mistakes to avoid
- Painting over damp patches
- Coating a roof with standing water issues
- Skipping the upturn at parapet walls
Our process
- Consultation — Call, WhatsApp or website enquiry.
- Site visit — Measurement and requirement discussion.
- Design & BOQ — Plans / 3D design and a detailed quotation.
- Execution — Work with a fixed timeline and supervisor.
- Handover — Inspection, cleaning and handover.
Areas we serve in Patna
We work across Patna including Boring Road, Kankarbagh, Bailey Road, Rajendra Nagar, Patliputra Colony, Danapur, Phulwari Sharif, Anisabad. See the full service page: Civil Work & Waterproofing in Patna.
Frequently asked questions
When is the best time for roof waterproofing?
In the dry months before the monsoon, so the treatment cures properly.
Do I need to remove bathroom tiles for waterproofing?
For a lasting fix, yes — the treatment works best under the tiles.
Can cracks in walls be repaired?
Yes. We first check whether cracks are structural or surface-level and then repair accordingly.
Talk to Hindustan Construction & Interior
We are based in Patna and work across Bihar with our own engineers, designers and site teams. see our work in Patna, Get a free quote or try our cost calculator. You can also call or WhatsApp us on +91 91134 89565.
FAQs
When is the best time for roof waterproofing?
In the dry months before the monsoon, so the treatment cures properly.
Do I need to remove bathroom tiles for waterproofing?
For a lasting fix, yes — the treatment works best under the tiles.
Can cracks in walls be repaired?
Yes. We first check whether cracks are structural or surface-level and then repair accordingly.
