Welcome to Waterseal Waterproofing Protecting Your Home from Leaks.
Underground Water Tank Waterproofing Services
Professional underground water tank waterproofing for RCC water storage tanks.
Underground Water Tank Waterproofing services in Ahmedabad by Waterseal. We repair RCC underground water tank leakage, seepage, cracks & groundwater ingress using non-toxic, long-lasting waterproofing systems. Free inspection available.
Underground Water Tank Waterproofing
Reliable Underground Water Tank Waterproofing Solutions
Underground water tanks are constantly exposed to moisture, groundwater pressure, and structural movement. Over time, these conditions can cause cracks, seepage, construction joint leakage, and water ingress through the RCC structure. If not repaired at the right time, leakage can weaken the tank structure, contaminate stored water, and damage surrounding areas.
At Waterseal Waterproofing, we provide specialised underground water tank waterproofing solutions for new and existing RCC tanks. Our waterproofing systems are designed to stop active leakage, prevent future seepage, and create a long-lasting protective barrier that is safe for potable drinking water.
Common Causes of Underground Water Tank Leakage
Underground water tanks may develop leakage due to several structural and environmental factors. Identifying the root cause is essential before selecting the right waterproofing system.
Common causes include:
- RCC concrete cracks
- Construction joint leakage
- Honeycombing in concrete
- Damaged plaster or waterproof coating
- Open tile joints
- Continuous groundwater pressure
- Ageing waterproofing layer
- Structural movement and minor earthquake vibrations
- Pipe entry point leakage
- Poor workmanship during construction
.
Why Choose Waterseal for Underground Water Tank WP?
With more than 30 years of waterproofing experience, Waterseal focuses on identifying the actual cause of leakage instead of simply covering the damaged area.
Our experienced engineers inspect the tank thoroughly and recommend the most suitable waterproofing system based on the tank’s construction, age, leakage condition, and groundwater exposure.
We use premium-quality Waterseal PSV Premix and Waterseal PSV Liquid waterproofing systems to deliver long-lasting protection backed by professional workmanship.
Underground Tank Waterproofing Process
Every underground water tank requires a systematic repair process to ensure complete and durable waterproofing.
Step 1 – Surface Preparation
The internal surface is thoroughly cleaned by removing loose particles, algae, damaged plaster, and old coatings to prepare the tank for waterproofing.
Step 2 – Crack & Surface Repair
Cracks, honeycombs, weak concrete, and damaged areas are repaired using suitable repair compounds.
Step 3 – Joint & Pipe Entry Sealing
Construction joints, tile joints, and pipe entry points are reinforced and sealed to eliminate leakage paths.
Step 4 – First Waterproofing Coat
The first waterproofing coat is applied using Waterseal PSV Premix mixed with water in the recommended proportion to create a strong bonding layer.
Step 5 – Protective Waterproofing Coats
Additional waterproofing coats are applied to develop a seamless, flexible, and durable waterproof membrane.
Step 6 – Curing & Leak Testing
After the coating has cured, the tank is filled with water and monitored for leakage to verify the effectiveness of the waterproofing system.
Step 7 – Final Cleaning & Commissioning
Once leak testing is completed successfully, the tank is cleaned, refilled with fresh water, and made ready for regular use.
Special Waterproofing Solutions for Underground Water Tanks
Underground tanks sometimes require additional waterproofing treatments depending on their construction stage and leakage source.
External Retaining Wall Waterproofing (For New Tanks)
For newly constructed underground tanks, we waterproof the external retaining walls before backfilling to prevent groundwater from entering the RCC structure.
Groundwater Seepage Treatment
Where groundwater pressure causes active seepage, we apply specialised waterproofing systems such as injection grouting and negative-side waterproofing to stop water ingress permanently.
Water Tank Waterproofing Systems We Use
We use scientifically proven waterproofing systems based on the leakage condition and structural requirements.
- Waterseal PSV Premix Non-Cementitious Waterproofing System
- Waterseal PSV Liquid Waterproofing System
- Polymer Modified Waterproofing
- Flexible Waterproof Coating
- Injection Grouting
- Crack & Joint Sealing
- Non-Toxic Waterproof Coating suitable for drinking water tanks
Why Waterseal PSV Premix?
Waterseal PSV Premix is a premium-quality, single-component, ready-to-use non-cementitious waterproofing system specially developed for water-retaining structures.
Benefits
- Forms a durable waterproof barrier
- Excellent flexibility
- Superior adhesion to RCC, plaster, and tiled surfaces
- Reduces algae, fungus, and bacterial growth
- Safe for potable drinking water
- Suitable for new and old underground water tanks
- Long-lasting leak protection
- Creates a seamless waterproof membrane after multiple coats
Important Guidelines After Waterproofing
To achieve the best performance from the waterproofing system:
- Ensure the tank surface is completely clean and dry before treatment.
- Allow sufficient curing time after the waterproofing application.
- Fill the tank with water for leak testing before regular use.
- Empty the tested water and refill the tank with fresh water before using it for drinking purposes.
- Follow the recommended curing and testing procedure to maximise durability.
Underground Water Tank Waterproofing Cost
The waterproofing cost depends on:
- Tank size
- RCC or tiled surface
- Leakage condition
- Repair work required
- Groundwater seepage
- Waterproofing method selected
✔ Free Site Inspection
✔ 5-Year Written Workmanship Guarantee
✔ Safe for Drinking Water
✔ Long-Lasting Leak Protection