Welcome to Waterseal Waterproofing – Trusted Overhead Water Tank Waterproofing Experts
Overhead Water Tank Waterproofing
100% Leak-Proof Solutions for Overhead Tanks
Protect your overhead water tank from leakage, seepage, hairline cracks, and weather damage with Waterseal’s professional waterproofing solutions. With 30+ years of experience, we use premium non-toxic waterproofing systems that are safe for drinking water and provide long-lasting protection.
Overhead Water Tank Waterproofing
Professional Overhead Water Tank Waterproofing Services
An overhead water tank is constantly exposed to sunlight, rain, wind, and changing temperatures. Over time, these weather conditions can cause hairline cracks, joint openings, damaged plaster, and waterproofing failure. If ignored, water leakage can damage walls, ceilings, electrical fittings, and even affect the quality of stored drinking water.
At Waterseal Waterproofing, we provide professional overhead water tank waterproofing solutions for residential, commercial, apartment, and industrial buildings. Our proven waterproofing systems stop leakage, protect the RCC structure, and extend the life of your overhead water tank while keeping stored water safe and hygienic.
Common Causes of Overhead Water Tank Leakage
Overhead tanks experience different conditions than underground tanks. Continuous exposure to weather makes them more vulnerable to deterioration.
Common causes include:
- Hairline cracks in RCC walls and slab
- Damaged plaster or waterproof coating
- Open construction joints
- Tile joint leakage
- Continuous exposure to sunlight (UV rays)
- Expansion and contraction due to temperature changes
- Rainwater seepage
- Pipe entry leakage
- Ageing waterproofing layer
- Poor workmanship during construction
Identifying the actual cause of leakage helps us recommend the right waterproofing solution for long-lasting protection.
Signs Your Overhead Water Tank Needs Waterproofing
Your water tank may need waterproofing if you notice:
- Water leaking from the tank walls
- Damp patches on ceilings or walls
- Hairline cracks inside the tank
- Water stains around the tank
- Peeling paint near the tank
- Algae or fungal growth
- Reduced water level without visible usage
- Leakage during or after filling the tank
Ignoring these signs can lead to costly structural repairs in the future.
Why Choose Waterseal for Overhead Water Tank Waterproofing?
With more than 30 years of waterproofing experience, Waterseal focuses on solving the root cause of leakage instead of applying temporary patch repairs.
Our experienced engineers inspect every overhead tank carefully and recommend the most suitable waterproofing system based on its condition, construction type, and leakage severity.
We use premium-quality Waterseal PSV Premix and Waterseal PSV Liquid Waterproofing Systems to provide durable, leak-proof protection with professional workmanship.
Our Overhead Water Tank Waterproofing Process
Every overhead tank is inspected carefully before selecting the most suitable waterproofing treatment.
Step 1 – Surface Cleaning
The tank surface is cleaned thoroughly by removing dirt, algae, damaged plaster, loose particles, and previous waterproof coatings.
Step 2 – Crack & Surface Repair
Hairline 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 penetrations are sealed to prevent future leakage.
Step 4 – Waterproofing Application
Waterseal PSV Premix waterproofing system is applied in multiple coats to create a seamless, flexible, and durable waterproof membrane.
Step 5 – Curing & Quality Inspection
After the waterproofing application, sufficient curing time is provided before inspecting the treated surface.
Step 6 – Water Filling & Leak Testing
The tank is filled with water and monitored to ensure the waterproofing system performs effectively without leakage.
Step 7 – Ready for Regular Use
After successful testing, the tank is cleaned and prepared for normal water storage.
Waterproofing Systems We Use
We select the most suitable waterproofing system depending on the tank condition and leakage severity.
- Waterseal PSV Premix Non-Cementitious Waterproofing System
- Waterseal PSV Liquid Waterproofing System
- Polymer Modified Waterproofing
- Flexible Waterproof Coating
- Crack & Joint Sealing
- Non-Toxic Waterproof Coating for Drinking Water Tanks
Why Waterseal PSV Premix?
Waterseal PSV Premix is a premium-quality, ready-to-use non-cementitious waterproofing system specially designed for water-retaining structures.
Key Benefits
- Creates a strong and seamless waterproof barrier
- Excellent flexibility against temperature movement
- Superior adhesion to RCC, plaster, and tiled surfaces
- Protects against UV and weather exposure
- Helps reduce algae and fungal growth
- Safe for drinking water tanks
- Long-lasting waterproof protection
- Suitable for new and existing overhead tanks
Important Guidelines After Waterproofing
For the best performance of the waterproofing system:
- Keep the tank empty until the coating is completely cured.
- Allow the recommended curing period before filling water.
- Perform a leak test before regular use.
- Empty the first filled water after testing.
- Refill the tank with fresh water before using it for drinking purposes.
Following these simple steps helps maximise the life of the waterproofing system.
Overhead Water Tank Waterproofing Cost
The cost depends on several factors, including:
- Tank size
- RCC or tiled surface
- Leakage condition
- Crack repair requirements
- Waterproofing system selected
- Accessibility of the tank
✔ Free Site Inspection
✔ 5-Year Written Workmanship Guarantee
✔ Safe for Drinking Water
✔ Long-Lasting Leak Protection
Frequently Asked Questions
How long does overhead water tank waterproofing last?
With proper surface preparation and premium waterproofing materials, the waterproofing system provides long-lasting protection for many years.
Is the waterproofing safe for drinking water?
Yes. We use non-toxic waterproofing systems that are suitable for potable drinking water tanks.
Can old overhead water tanks be waterproofed?
Yes. Both new and old RCC overhead water tanks can be repaired and waterproofed after proper inspection.
How many days does the waterproofing work take?
The duration depends on the tank size, repair work required, and curing time. Most projects are completed within a few days.
Do you provide free inspection?
Yes. Waterseal offers free site inspection and recommends the most suitable waterproofing solution based on your tank’s condition.