Water Tank Waterproofing
Certified potable water tank waterproofing linings compliant with Dubai Municipality health regulations and WRAS/BS 6920 standards. Solvent-free epoxy and crystalline cementitious coatings.
Certified Potable Water Tank Waterproofing & Lining
Potable water storage tanks in residential villas, commercial towers, and industrial campuses throughout the UAE are critical infrastructure assets. Because desalinated municipal water supplies contain residual chlorination and trace minerals, untreated concrete surfaces can degrade over time, leading to calcium leaching, reinforcement rusting, bacterial biofilm accumulation, and contaminated drinking water.
IZOMATE provides certified potable water tank lining systems that guarantee structural watertightness while complying with stringent public health regulations enforced by Dubai Municipality and international standards (BS 6920 / WRAS).
Health & Safety Compliance
Water tank coatings must be completely non-toxic, solvent-free, and inert once cured. Our systems feature:
- Zero VOC (Volatile Organic Compounds) and 100% solvent-free formulations that prevent water tainting or odor transfer.
- Resistance to bacterial growth, algal colonization, and mold development on submerged surfaces.
- Seamless high-gloss finish that enables effortless periodic cleaning and chlorination maintenance.
- Resistance to positive hydrostatic pressure from internal storage and negative pressure from external soil water.
Public Health & Municipal Compliance for Potable Water Storage
Potable water storage tanks in residential communities, commercial towers, and industrial parks in the UAE are subject to rigorous public health scrutiny by Dubai Municipality. Desalinated municipal water contains dissolved minerals and residual chlorination agents designed to maintain biological purity. However, when stored in unlined or improperly sealed concrete reservoirs, the water leaches free lime and calcium hydroxide from the concrete matrix, altering water pH and creating micro-rough surfaces where dangerous bacterial biofilms (such as Legionella) and algae can proliferate.
Furthermore, underground water tanks in high groundwater zones risk inward seepage of contaminated soil water and salinity through cold joints and formwork tie-rod holes. IZOMATE potable water tank lining systems provide certified, non-toxic, food-grade protective barriers that guarantee absolute biological safety and structural watertightness compliant with BS 6920 and WRAS standards.
Engineering Build-Up & Surface Sterilization Protocol
- Substrate Preparation: High-pressure water jetting (minimum 250 bar) removes all surface efflorescence, mold, and chemical residue. Formwork tie-rod sleeves are core-drilled, plugged with non-shrink waterproof cementitious plugs, and sealed with epoxy mastic.
- Internal Fillet Coves: Heavy-duty 50x50mm polymer coves are installed at all wall-floor and wall-ceiling junctions to ensure seamless, cleanable internal geometry.
- Deep-Penetrating Crystalline Basecoat: A dual-action crystalline slurry is brushed into saturated concrete pores. Active catalytic chemicals migrate into concrete micro-cracks, reacting with moisture and unhydrated cement to form insoluble crystalline structures that seal capillaries against negative water ingress.
- Food-Grade WRAS Epoxy Topcoat: Application of two high-build coats (minimum 400 microns total DFT) of 100% solids, solvent-free epoxy coating formulated specifically for potable water contact. Delivers a glossy, porcelain-smooth, tile-like surface that facilitates effortless chemical sanitization.
- Post-Cure Sterilization: Following 7 days of full chemical cross-linking, the tank is pressure-washed, disinfected with mild chlorine solution per Dubai Municipality hygiene guidelines, and rinsed thoroughly with freshwater before final filling.
Multi-Layer Application Detail
Continuous, monolithic barrier applied stage-by-stage with flood test verification.
Structural Concrete Tank Basin
Dense reinforced concrete tank washed and mechanically prepared to remove laitance and contamination.
Non-Shrink Fillets & Tie-Rod Seals
High-strength cementitious coves at all wall-slab angles and waterproof sealing of all formwork tie holes.
Crystalline Waterproof Slurry (Base Layer)
Deeply penetrating crystalline waterproofing migrating into concrete pores to seal micro-capillaries.
Solvent-Free Food-Grade Epoxy Primer
100% solids epoxy primer providing exceptional adhesion to dry concrete surfaces without releasing solvents.
WRAS-Certified Epoxy Tank Lining (Topcoat)
High-build, non-toxic, chemical-resistant glossy epoxy coating formulated specifically for drinking water.
System Specifications & Standards
Verified physical and performance parameters per official manufacturer technical data sheets (TDS).
| Property / Parameter | Technical Value | Unit | Standard / Method |
|---|---|---|---|
| Total Coating Thickness | 400 - 500 | microns (DFT) | ASTM D4138 |
| Potable Water Certification | Certified Non-Toxic | Pass | BS 6920 / WRAS |
| Adhesion to Concrete | > 2.8 (Concrete Failure) | N/mm² | ASTM D4541 |
| Water Permeability | Nil (Impermeable) | mm depth | DIN 1048 |
| Chemical Resistance | Chlorine & Desalinated Water | Pass | ASTM D1308 |
From first visit to warranty
Inspect
Site visit, moisture and surface checks, photos.
Propose
System, layer build-up, price per m² and programme.
Install
Trained crew, stage-by-stage checks, flood test.
Hand over
Completion report and written warranty.
12 to 17 Years System Warranty
Every completed project includes a signed handover certificate, inspection log, and written warranty backed by manufacturer technical data.
Frequently Asked Questions
Answers to common questions regarding specifications, installation timeline, and preparation.
Is your water tank waterproofing safe for drinking water?
Yes. We exclusively utilize 100% solvent-free food-grade epoxy and cementitious formulations tested and approved to BS 6920 (Suitability of non-metallic materials for use in contact with water intended for human consumption) and compliant with Dubai Municipality public health guidelines.
How often should concrete drinking water tanks in Dubai be inspected and re-lined?
Dubai Municipality recommends inspecting domestic and commercial water tanks at least once annually. High-performance epoxy linings typically last 10 to 15 years before requiring surface refurbishment.
How long does a water tank lining take to cure before it can be filled?
Food-grade epoxy linings achieve initial cure in 24 to 48 hours, but require full chemical cross-linking for 7 days at 25°C before tank sterilization, freshwater rinsing, and final filling for consumption.
Can you repair leaking overhead GRP and concrete water tanks?
Yes. We repair both ground-level concrete storage reservoirs and elevated rooftop tanks using structural epoxy mortars, flexible joint bandages, and seamless tanking coats.
Can a leaking water tank be repaired from the inside without exterior excavation?
Yes. By combining crystalline negative-side waterproofing, high-pressure polyurethane crack injection, and food-grade internal epoxy linings, leaking underground tanks can be fully sealed and revitalized from within the basin.
Does the food-grade epoxy lining release any odor or taste into drinking water?
No. Our potable water tank coatings are 100% solvent-free, zero-VOC formulations certified to BS 6920. Once fully cured and rinsed, they are completely odorless, tasteless, and biologically inert.