Waterproofing contractors in Thane West since 2008
Fix the leak now,
before the monsoon
makes it expensive.
We do terrace, bathroom, basement and wall waterproofing across Thane, Mulund, Ghatkopar, Andheri and Mumbai. Thermal imaging tells us where the water is really coming from, so we can fix the cause of it rather than the patch you can see, and everything we do comes with a written 10-year warranty.
- Same-day site visit across Thane and Mumbai
- Every material named on your quotation, by brand
- Signed 10-year warranty before work begins
- 18+
- Years in the trade
- 500+
- Projects delivered
- 10 yr
- Written warranty
- 4.8 ★
- Google rating
Since 2008
Homes, societies & malls
Signed before work starts
Verified reviews
Some of the developers, malls and brands we work for
What we do
Everything we take on
There are fifteen services in all, held to the same standard, and these six are the ones Thane calls us about most often.
Terrace Waterproofing
Most Requested
Terrace and roof waterproofing that holds through the monsoon, with a written 10-year warranty.
Bathroom Waterproofing
Permanent Fix
Stops seepage under the tiles for good, with very little breaking and a quick turnaround.
Leakage Repair
Same-Day Visit
Emergency and planned leak repair across Thane and Mumbai, usually with a site visit the same day.
Wall Seepage Treatment
Root-Cause Fix
Deep-injection treatment for damp, salt-damaged walls, which is a different thing entirely from painting over them.
Basement Waterproofing
Heavy Duty
Epoxy injection and crystalline tanking that hold groundwater back all year.
Housing Society & Commercial
Bulk Contracts
Society and commercial contracts, with staged billing and annual maintenance if you want it.
Where we work
We run out of Wagle Estate in Thane West. These four areas have their own pages, covering the building stock we meet there and how quickly we can get to you.
Four core areas
- Thane WestWagle Estate · Shivaji Nagar · Naupada
- MulundMulund West · Mulund East · Mulund Colony
- GhatkoparGhatkopar East · Ghatkopar West · Pant Nagar
- AndheriAndheri East · Andheri West · Lokhandwala
We also work across Powai, Borivali, Bhandup, Kalyan, Dombivli and Navi Mumbai. Ask whether we cover your building →
Why choose us
Waterproofing is easy to sell and hard to check up on
Which is why we have set out the same job twice below, once the way it usually goes and once the way we do it. Every line is something you can hold us to.
Stage
Most contractors
Mahadev Waterproofing
- Diagnosis
- Coat the whole terrace and hope the leak was somewhere underneath.
- We trace the water with thermal imaging and moisture meters, and we show you the scan before we quote anything.
- Materials
- Unbranded drums, quietly swapped for something cheaper once work starts.
- Dr. Fixit, BASF, Pidilite, Asian Paints and STP, named on your quotation and delivered to your site in sealed packs.
- Crew
- Subcontracted daily labour, with different faces turning up every week.
- Our own trained team from the first day through to handover, and progress photos every evening.
- Quotation
- A single lump-sum figure that a committee has no way of comparing.
- Itemised by material, labour, area and stage, and the figure we quote is the figure you pay.
- Warranty
- Promised on the phone, and only once the money has cleared.
- A signed 10-year document, handed to you before anyone starts work.
Materials we specify
- Dr. Fixit
- BASF
- Pidilite
- Asian Paints
- STP
- Nerolac
- Sika
- Fosroc
How it works
How the job actually runs
From the first phone call to the warranty document in your hand, here is exactly what happens and roughly when.
Free site inspection
We come out, scan the affected area and work out where the water is really coming from. Usually we can be there within a day of your call.
Written diagnosis and quote
You get an explanation in plain language, the system we think it needs, and an itemised price. Take your time with it — nobody will chase you for a decision.
The work, done by our own crew
Our trained team carries out the job rather than subcontracted labour. We keep the site clean and send you photos as it progresses.
Testing and warranty
A ponding or flood test, one last thermal scan to check it is dry, and then your signed 10-year warranty.
Our work
Photos from our own sites
None of this is stock imagery. Every photo here was taken on a Mahadev Waterproofing job somewhere in Thane or Mumbai.
Reviews
What people in Thane say about us
These all come from our verified Google Business profile, with the names and areas they were left under.
“Professional team, quality work, and timely completion. They explained exactly what was causing the leak before starting anything.”
Sonal GalaWagle Estate, Thane West “No problem of water leakage post work completed. It has been through a full monsoon now and the terrace is completely dry.”
Nimesh SangoiMumbai “Very prompt and excellent work. Called in the morning, they were on site the same afternoon to inspect.”
Sagar JoshiMumbai “Excellent job. Clean, tidy and they gave us a written warranty that nobody else was willing to put on paper.”
Sudarshan BorhadeThane, Mumbai
If we’ve worked for you, a Google review takes about 30 seconds.
It’s genuinely the most useful thing anyone can do for a small trade business like ours.
Common questions
The things everybody asks first
Cost, warranty, coverage and timing. If yours isn’t here, our service pages go into more detail — or just ring us and ask.
How much does waterproofing cost in Thane?
It depends on the area, the condition of the structure and which system it needs, so there is no honest single figure anyone can give you over the phone. After a free site inspection you get an itemised quotation covering materials, labour and stages, which you can compare line by line against anyone else’s.
Do you give a written warranty?
Yes. We hand over a signed 10-year warranty document covering the system we install, and you get it before work begins rather than after we have been paid.
Which areas do you serve?
Thane West, Mulund, Ghatkopar and Andheri have their own dedicated teams and pages, and we also cover Powai, Borivali, Bhandup, Kalyan, Dombivli, Navi Mumbai and greater Mumbai.
Can waterproofing be done during the monsoon?
Emergency leak repair and injection grouting can. A full membrane system needs a dry substrate, so we usually stabilise the leak first and then schedule the main work between spells of rain, or wait until the season has passed.
Is the site inspection really free?
Yes, including the thermal scan and the moisture readings, and there is no obligation to go ahead with us afterwards. We would rather lose a job than sell a treatment a building does not need.
How soon can somebody come and look at it?
Across Thane and Mulund it is usually the same day. Ghatkopar and Andheri are more often next-day. Emergency leakage is answered 24/7.
Free inspection
Book your free site inspection
Tell us what’s been happening and we’ll come and look at it, usually within a day, and it doesn’t cost you anything.
- Someone who surveys buildings for a living turns up, not a salesman
- A thermal scan and moisture readings across the affected area
- An explanation of what’s causing it, in words that mean something
- An itemised written quotation that stays valid for 30 days
- No cost, and no obligation to go ahead with us
Ask for a free inspection
We’ll call you back within a couple of hours, as long as it’s during working hours.