Water tank waterproofing in Aldarb: preventive periodic check

Prepared by the technical team · editorial review · last updated 13 November 2026 · Sources

Water tank waterproofing in Aldarb: the local context

Aldarb is about 18.7 km from the sea coast (OpenStreetMap). The centre of Aldarb sits about 79 m above sea level (SRTM open elevation data).

For water tanks in Aldarb, the most common problem is slow seepage through hairline cracks and at the joints between the tank floor and walls, which often goes unnoticed until the stored water tastes off or the outside of the tank shows damp patches. Because the damage builds gradually, a preventive periodic check is far cheaper than waiting for a leak. Tank internal coating is typically priced at SAR 25–60 per m², while crack injection is priced at SAR 40–120 per m, so catching a small crack early can keep the repair scope and cost small.

Aldarb's location shapes how we approach each tank. The centre of Aldarb sits about 79 m above sea level, and it is about 18.7 km from the sea coast, which means the air is drier and salt exposure is lower than on the coast. In practice, we focus less on salt-driven corrosion and more on daily heat cycles that expand and contract the tank walls, widening small cracks over time. For that reason, we check the exterior of the tank, the roof slab and the inlet fittings alongside the interior, rather than inspecting only the water-side surface.

Before the visit, ask the provider to explain exactly which areas they will inspect, including the floor-wall joints, the roof and any pipe penetrations, and how they will record cracks so you can track them at the next check. Ask whether the price is quoted per m² or per metre, since tank internal coating and crack injection use different units and the total will depend on the measured area or crack length. Ask how the tank will be emptied and disinfected before any work begins, and how long it will be out of service. A clear written scope, a measured quote and a plan for the next periodic check will help you keep the tank sound at a predictable cost.

Preventive checks follow a written schedule instead of waiting for a fault.

Signs that call for water tank waterproofing

These are the signs most often linked to water tank waterproofing:

• Deposits and flaking inside the tank
• A tank that leaks after testing
• Unusual colour or taste in the water

Causes we see in the field

• Cracks in the walls or floor.
• Damaged old coating — we check this before anything else.
• A common cause: construction joints.

Tools and methods, and when we use them

From the first visit to the report

1. Emptying and ventilation: The tank is emptied and ventilated before entry.
2. Cleaning and preparation: Loose material is removed down to a sound surface.
3. Crack treatment: Active cracks are treated first.
4. Coating layers: A material intended for drinking-water tanks is applied.
5. Disinfection and fill test: The tank is disinfected and the level is monitored after filling.

Facts and costs — Aldarb

Short answers for Aldarb

Mistakes that cost more

• Using a material that is not intended for drinking water

What you receive

You receive: the material name, its batch number and the fill-test result, in a technical report with a verification code.