Professional Water Tank Waterproofing & Leakage Repair Services in Pakistan
Master Chemical Services (MCS) provides expert water tank waterproofing and leakage repair services for residential, commercial, and industrial properties across Pakistan. Whether your overhead tank is dripping onto your roof or your underground tank is losing water through hairline cracks, MCS's certified technicians deliver a permanent, hygienic, and food-safe solution.
A leaking or deteriorated water tank does far more damage than simply wasting water. Leaks cause persistent roof dampness, structural corrosion, and mould growth. Our food-grade solutions ensure that stored water remains completely safe for domestic use by blocking bacteria, algae, and chemical contaminants.
Hygienic Seal
Hygienic & Food-Safe Solutions
ISO Certified
Premium ISO 9001 Blends
National Coverage
Karachi, Lahore, Islamabad & More
Why Water Tank Waterproofing Is Essential
A water tank is the heart of your building's supply, but without professional waterproofing, it can become a source of structural decay and health hazards. MCS uses food-grade, non-toxic materials to ensure your water remains safe and your structure stays sound.
Water Conservation
A leaking 500-litre tank can waste thousands of litres per month, inflating utility costs and contributing to Pakistan's growing water scarcity.
Water Purity
Deteriorated tank surfaces harbour bacteria, algae, and chemical residues that contaminate your supply and pose serious health risks.
Structural Protection
Overhead tank leaks cause persistent roof seepage, while underground leaks saturate surrounding soil, potentially threatening the building's foundation.
Corrosion & Gas Prevention
Hydrogen sulfide gases create sulfuric acid that attacks concrete and masonry, while constant wet-dry cycles accelerate the corrosion of steel reinforcement.
Tank Failure Indicators
Don't wait for total failure or contamination. Contact MCS if you notice these warning signs:
- Unexpected increase in water bills
- Dampness on walls near the tank
- Persistent algae or odour in water
- Visible cracks inside or outside the tank
- Stains on roof beneath overhead tanks
- Seepage in underground tank pits
- Structural concrete spalling (flaking)
Our Water Tank Waterproofing Solutions
MCS utilizes specialized, food-grade waterproofing systems tailored to ensure long-term structural integrity and water safety for both domestic and commercial tanks.
Polyurethane Coating
Food-grade, flexible coatings applied in multiple layers to the tank interior. Creates a seamless, non-toxic membrane that resists algae growth, chemical attack, and constant wet-dry cycling.
Cementitious Waterproofing
Polymer-modified rigid coatings that offer high compatibility with concrete substrates. Ideal for large underground tanks and reservoirs where superior surface durability is required.
Crack Injection
Targeted treatment for active leaks through wall and floor cracks. We utilize specialized injection grouting to stop water ingress at the source before applying the main protective membrane.
Joint Sealing
Application of flexible, high-grade sealants to structural joints. This critical step prevents future movement-related leaks, ensuring the tank remains permanently watertight.
Our Water Tank Treatment Process
Step 1 — Tank Inspection & Assessment
The tank is drained and inspected for all cracks, failed joints, surface deterioration, and contamination. The extent of leakage and any structural issues are carefully documented to plan the repair.
Step 2 — Thorough Cleaning
The interior surfaces are cleaned of all deposits, algae, biological growth, and loose concrete using mechanical and chemical cleaning methods. A clean substrate is essential for the waterproofing system to bond effectively.
Step 3 — Crack & Joint Repair
All cracks, failed joints, and areas of deteriorated concrete are repaired using the appropriate mortar, sealant, or injection compound before the primary waterproofing system is applied.
Step 4 — Waterproofing System Application
The selected food-grade, non-toxic waterproofing system is applied in the correct number of coats and specified thickness, ensuring complete, uniform coverage of all internal tank surfaces.
Step 5 — Curing & Quality Check
After the curing period, the coating is rigorously inspected for complete coverage, adhesion, and any areas requiring touch-up. A final water-tightness test is conducted to ensure performance.
Step 6 — Warranty
MCS provides a written 5-year warranty on qualifying water tank waterproofing projects, covering both the premium materials used and the professional application.
Key Benefits of Tank Treatment by MCS
- • Water Conservation — Eliminates leaks to save thousands of litres of water monthly
- • Potable Water Purity — Food-grade solutions prevent bacteria and algae contamination
- • Structural Protection — Stops seepage from damaging your building's roof or foundation
- • Chemical Resistance — Resists corrosion from gases and mineral salts in the tank
- • Enhanced Durability — Prevents the wet-dry cycle that degrades internal concrete
- • Professional Assurance — Backed by a 5-year written warranty
Frequently Asked Questions — Water Tank Waterproofing
Yes. MCS uses only food-grade, non-toxic, internationally approved coatings for water tank waterproofing. These materials are fully safe for drinking water storage after complete curing.
Most residential tanks (1,000–5,000 litres) can be treated in 1–2 days, including surface preparation and drying time. Larger commercial projects may require additional time based on tank size and complexity.
Full cure time depends on the specific system used for your tank. Most tanks can be safely refilled within 3–7 days after treatment completion. Our team will advise on the exact curing period before you resume use.
Yes. We treat active leaks by using specialized crack injection grouting to seal the water path at the source, followed by the application of the main waterproofing system to ensure a completely leak-free result.
The cost varies based on the size of your tank, its current condition, and your location. MCS provides free on-site assessments and transparent, competitive pricing. Contact us today to receive a no-obligation quote for your property.
