Underground Water Tank Waterproofing
for Leak Protection, Safe Water Storage and Long-Term Tank Safety
Underground Water Tank Waterproofing protects water tanks from leakage, seepage, wall cracks, and moisture damage caused by continuous water storage and surface weakness. Our treatment includes tank cleaning, crack filling, joint sealing, primer coating, and multiple waterproof chemical layers to create a strong protective barrier inside water tanks.
Suitable for RCC water tanks, brick masonry tanks, tiled tanks, overhead tanks, and underground water storage tanks.
Underground Water Tank Waterproofing
For Long-Term Leak Protection and Safe Water Storage
Underground Water Tank Waterproofing helps protect tank walls from water seepage, crack formation, leakage, and surface damage caused by continuous water pressure. Proper waterproof chemical coating improves tank life and reduces future leakage problems.
Tank Surface Cleaning Before Waterproofing
Tank surfaces are cleaned using wire brush, scraper, and water to remove algae, dust, loose particles, and old weak coating layers.
Crack & Joints Filling and Primer Application
Visible cracks, joints, and weak areas are filled properly before primer coating begins inside the water tank.
Long-Term Leak Protection for Water Tanks
Multiple waterproof coats create a strong barrier that helps stop seepage and improve tank durability.
Why Underground Water Tank Waterproofing is Important
Prevent Water Leakage
Waterproof coating helps stop water leakage through tank walls, floor joints, and surface pores.
Protect Tank Structure
Proper waterproof treatment improves wall strength and reduces damage caused by continuous water pressure.
Seal Cracks and Joints
Cracks, joints, and weak areas are sealed before coating to stop seepage inside the tank.
Improve Water Safety
Waterproof coating helps maintain cleaner tank surfaces and reduces moisture-related contamination risk.
Underground Water Tank Waterproofing Process
Our Underground Water Tank Waterproofing process helps stop leakage, seal cracks, and create a long-lasting waterproof layer inside water tanks. Proper cleaning, joint treatment, primer application, and multiple chemical coats are completed carefully for safe water storage.
Step-by-Step Process
1. Clean Tank Surface Properly
The inside tank surface is cleaned using wire brush, scraper, and water to remove algae, dust, loose particles, and old weak coating layers.
2. Fill Cracks and Joints
Visible cracks are opened carefully using hand scraper or grinder and filled with PSv Premix. In tiled tanks, joints are sealed properly using PPC Mat.
3. Apply Primer Coat
A primer is prepared using 1 part PSv Premix + 1 part water and applied evenly by brush on the full tank surface.
4. Dry the Tank Properly
The tank cover is kept open for complete drying. If possible, heavy air circulation and halogen heat are used for faster drying.
5. Apply Two Coats of PSv Premix
Two waterproof coats of PSv Premix are applied without adding water using brush or roller.
6. Final Drying Before Water Use
Each coat is dried for 4 to 6 hours, and after completion the tank is kept open for full curing before water filling.
This water tank waterproofing method is suitable for RCC tanks, brick masonry tanks, tiled tanks, overhead tanks, and underground storage tanks.
Why Property Owners Choose Waterseal for Water Tank Waterproofing
We provide practical and reliable Underground – Overhead Water Tank Waterproofing solutions for residential, commercial, and industrial water storage tanks. Proper tank preparation, suitable chemical selection, and careful coating application help ensure long-term waterproof performance.
Safe waterproof protection for overhead tanks, underground tanks, RCC tanks, tiled tanks, and brick masonry water tanks.
30+ Years of Waterproofing Experience
We have long experience in waterproofing work for water tanks, terraces, basements, and leak-prone structures across Gujarat.
1900+ Water Tank Waterproofing Completed
Our team has completed many waterproofing treatments for old and newly constructed water tanks in different property types.
Safe Chemical for Drinking Water Tanks
Waterseal PSv-PREMIX creates a durable waterproof layer that is safe for drinking water use and suitable for long-term tank protection.
Common Signs Your Water Tank Needs Waterproofing
✔ Water level drops without regular use
✔ Damp patches appear near tank walls
✔ Leakage marks below overhead tank area
✔ Cracks visible inside tank surface
✔ White salt deposits near joints
✔ Moisture around nearby walls
Water Tank Damage Happens Due to These Reasons
✔ Continuous water pressure inside tank walls
✔ Cracks formed by surface ageing
✔ Weak joints in old tank construction
✔ Porous concrete surface absorbs water
✔ Tile joint leakage inside tank
✔ Poor previous waterproof coating
Delaying Water Tank Waterproofing Increases Future Repair Cost
Many property owners ignore small leakage until wall dampness becomes clearly visible.
Some try temporary chemical repairs that stop leakage only for a short period.
Later repairs often become more costly when tank cracks spread deeper.
Proper Waterproof Treatment Protects Tank Walls Better
Professional treatment begins with cleaning, crack filling, and correct primer preparation.
Multiple waterproof coats are applied evenly across the full tank surface.
Proper coating helps reduce leakage and improves long-term tank durability.
Water Tank Waterproofing Charges in Ahmedabad
The cost of Underground-Overhead Water Tank Waterproofing depends on tank condition, crack repairs required, surface preparation, and tank size. Proper waterproof coating is recommended to stop leakage and protect water storage structures for long-term use.
Food-grade waterproof chemicals are used inside water tanks to ensure safe water storage and durable leak protection.
Water tank waterproofing cost in India usually varies depending on coating type, surface condition, and repair work, typically ranging roughly from ₹80 to ₹250 per sq. ft for tank waterproofing treatments.
Water Tank Waterproofing Rates
Old & Newly Constructed RCC Water Tanks
₹120 /- Per Sq. Ft
Tiled Water Tanks
₹150 /- Per Sq. Ft
Minimum Billing Amount
₹10,000 (Suitable for medium-sized water tanks)
Underground Tank Negative Pressure Treatment
₹1,000 Per Point
FAQs about Water Tank Waterproofing
What is Underground-Overhead Water Tank Waterproofing?
Underground-Overhead Water Tank Waterproofing is a chemical coating process used inside water tanks to stop leakage, seal cracks, and protect tank walls from seepage.
How do I know if my underground water tank is leaking?
If water level drops without regular use or nearby walls show dampness, the underground tank may have leakage.
Is waterproof chemical safe for drinking water tanks?
Yes, Waterseal PSv-PREMIX is non-toxic, chemical-resistant, and suitable for drinking water storage tanks.
Can tiled water tanks be waterproofed without removing tiles?
Yes, waterproof treatment can be applied on tiled tanks after sealing joints properly without removing existing tiles.
How long should a tank remain empty after waterproofing?
The tank should remain empty for at least 24 hours after coating, then water should be filled and drained before drinking use.
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