Professional Waterproofing Services in Mumbai
End-to-end waterproofing for terraces, basements, bathrooms, water tanks and external walls — built to stop leakages permanently. Trusted by housing societies, builders and homeowners across Mumbai for over a decade.
400+Waterproofing
Jobs Done
Jobs Done
10-Year
Warranty*
Warranty*
What is Waterproofing?
Lasting Protection Against Water Damage
Waterproofing is the process of treating a structure's surfaces — terraces, roofs, basements, bathrooms, water tanks and external walls — to make them resistant to water penetration. Left untreated, water seepage leads to concrete spalling, rebar corrosion, dampness, fungal growth and long-term structural damage.
Devki Projects uses a combination of membrane, coating, injection grouting and crystalline technologies — selected based on surface type, exposure and budget — to deliver waterproofing that actually lasts, backed by workmanship warranties.
Covers terraces, basements, bathrooms, water tanks & external walls
Free leak-source inspection before quoting any treatment
Branded, ISO-certified membranes, coatings & admixtures
Workmanship warranty up to 10 years on select treatments
Fast mobilization — site-ready within 24 hours across Mumbai
Applications
Where We Do Waterproofing
Waterproofing is applied across every water-exposed surface in residential, commercial and industrial buildings.
Terrace & Roof
APP/SBS membrane or PU coating systems to protect flat and sloped roofs from ponding water, UV degradation and thermal cracking.
Bathroom & Wet Areas
Cementitious or PU coating treatment before tiling in bathrooms, kitchens and utility areas to stop seepage into slabs below.
Basement & Podium
Crystalline and membrane systems for below-grade structures resisting hydrostatic pressure, ground water and rising damp.
Water Tanks (OHT/UGT)
Food-grade waterproof coating for overhead and underground water tanks — prevents leakage and keeps stored water contaminant-free.
External Walls
Elastomeric and silicone-based coatings on facades to prevent rain-driven seepage, efflorescence and dampness in wall cavities.
Expansion & Construction Joints
Flexible sealant and joint-filler treatment at movement joints, slab junctions and parapet-to-slab interfaces to prevent crack-driven leaks.
Balcony & Sunshade
Slope-corrected waterproofing on balconies, chajjas and sunshades — common leak points that affect the floors directly below.
Swimming Pools
Crystalline and PU-based systems designed for constant water immersion, sealing pool shells against leakage and structural seepage.
How We Work
Our Waterproofing Process
A systematic, leak-source-first approach to every waterproofing job — from inspection to warranty handover.
1
Leak Inspection
Free site visit to identify the actual source of seepage, not just the visible damp patch.
2
Surface Preparation
Loose plaster removed, cracks chased and cleaned, surface degreased and levelled for treatment.
3
Primer & Base Coat
Bonding primer applied to ensure the waterproofing membrane or coating adheres firmly to the substrate.
4
Waterproofing Application
Membrane, coating, crystalline or injection treatment applied in the correct number of layers as per system spec.
5
Flood Test & Handover
72-hour ponding/flood test confirms zero leakage before curing, cleanup and warranty certificate handover.
Methods & Materials
Waterproofing Systems We Use
We select the right waterproofing technology for each surface — not a one-size-fits-all approach — based on exposure, movement and budget.
APP/SBS Membrane
Torch-applied bituminous membrane — the industry standard for terraces and roofs, offering strong, seamless waterproofing.
Polyurethane (PU) Coating
Liquid-applied, seamless, highly elastic coating ideal for terraces, balconies, bathrooms and complex geometries.
Cementitious Coating
Cement-based, rigid waterproof coating for bathrooms, water tanks and below-grade areas with minimal movement.
Crystalline Waterproofing
Penetrates into concrete and reacts with moisture to form crystals that block capillary pores — ideal for basements & tanks.
Injection Grouting
Polyurethane/epoxy resin injected under pressure into active cracks and construction joints to seal leaks from within.
Bituminous Coating
Cold-applied bitumen emulsion for foundation walls, retaining walls and below-grade damp-proofing at economical cost.
EPDM & TPO Membrane
Synthetic rubber sheet membranes offering long service life and high resistance to UV exposure and temperature swings.
Silicone & PU Sealants
Flexible joint sealants for expansion joints, window frames, pipe penetrations and parapet junctions that move with the structure.
Why Choose Us
Why Mumbai Trusts Devki Projects for Waterproofing
Waterproofing that fails within a year is worse than not doing it at all. Our team is trained to diagnose the actual leak source and apply the right system — not just the cheapest one.
01
Free, Accurate Leak Diagnosis
We trace seepage to its true source before quoting — patch-repairing the visible symptom rarely solves the underlying leak.
02
System-Matched, Not One-Size-Fits-All
Membrane, PU, cementitious, crystalline or injection — we recommend what suits your surface, not what's easiest for us.
03
Flood-Tested Before Handover
Every job undergoes a 72-hour ponding test to confirm zero leakage before we consider the work complete.
04
Workmanship Warranty
Warranty coverage up to 10 years on select systems, backed by a documented completion certificate.
05
Transparent, Fixed Quotations
Per-sq.ft pricing based on area, system and prep work required. No surprise billing — you know the cost before we begin.
FAQs
Frequently Asked Questions
Common questions about waterproofing services in Mumbai.
How do I know which waterproofing method I need?
Our free site inspection identifies the surface type, exposure conditions and leak source, and we recommend the most suitable system — membrane, PU coating, cementitious, crystalline or injection grouting — along with a transparent explanation of why.
How long does waterproofing take to complete?
A standard bathroom or small terrace typically takes 3–5 days including curing time. Larger terraces, basements or podium areas can take 7–15 days depending on area, system chosen and weather conditions, since some coatings require dry curing periods.
Do you offer a warranty on waterproofing work?
Yes. Depending on the system used, we offer workmanship warranties ranging from 3 to 10 years, backed by a documented completion certificate. Warranty terms are shared upfront in the quotation before work begins.
Can waterproofing be done without removing existing tiles?
For active leaks in bathrooms and wet areas, injection grouting can often seal the leak without removing tiles. However, for a complete, long-term solution, we generally recommend removing tiles to treat the base slab directly — we'll advise the best approach after inspection.
How do you test that the waterproofing actually works?
Every terrace, basement and water tank job undergoes a mandatory flood/ponding test — the treated surface is filled with water and monitored for 48–72 hours to confirm there is zero seepage before we hand the site back to you.
Is waterproofing possible during the monsoon?
Most waterproofing systems require a dry surface to cure properly, so we recommend planning major terrace and roof work before or after the monsoon. However, injection grouting for active leaks can be carried out even during the monsoon since it works from within the crack.
Get a Free Waterproofing Quote Today
Tell us the area, surface type and leak issue — we'll give you a detailed, no-obligation quotation. Free site inspection available across Mumbai within 24 hours.
Request a Free Quote
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