Water tank waterproofing in Jubail: before summer & rain season

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

Why water tank waterproofing differs in Jubail

Team note on Jubail: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins.. The centre of Jubail sits about 4 m above sea level (SRTM open elevation data).

Jubail is about 0.9 km from the sea coast (OpenStreetMap).

Water tanks on rooftops and at ground level in Jubail face a common problem: seams, joints and old coatings that lose their bond after years of heat and water cycling, leading to slow leaks that show first as damp patches on the ceiling below or a drop in water quality. For this property type, the first check is the internal lining of the tank, since a tank that holds water for most of the year is constantly wetted, and any failure shows up as flaking or blistering that the eye can miss from the outside.

Local conditions change how we approach the work. The centre of Jubail sits about 4 m above sea level, and the town is about 0.9 km from the sea coast, so the air carries salt and humidity that accelerate corrosion of metal fittings and the breakdown of surface coatings. Because the land is so flat and close to the water, rain tends to pool rather than drain quickly, which means roof surfaces and tank lids stay wet longer. For that reason we look closely at the tank's internal coating, the joints around the lid and the connections where pipes enter, and we treat the exterior with a product suited to both sun and salt air rather than a basic finish.

Before the visit, ask the provider which materials they plan to use and why, and whether the price quoted is for the tank's internal surface, the roof area, or both. Ask how they will prepare the surface, since poor cleaning is the usual reason new coatings fail early, and ask whether the tank must be emptied and for how long. Request a written breakdown by square metre and by linear metre for any crack injection, so you can compare quotes fairly. Plan the work for the period before the hot season or the rain season, when weather is steadier and the coating has time to cure properly before the tank is refilled.

Checks before summer and before the rain season catch problems while they are still small.

Signs that call for water tank waterproofing

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

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

The most common causes

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

Tools we use in Jubail

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 — Jubail

Common questions about water tank waterproofing in Jubail

Common mistakes we see

• Using a material that is not intended for drinking water

The written outputs

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