Water tank waterproofing in Dhahran: preventive periodic check

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

Before we start: what we know about Dhahran

Dhahran is about 5.9 km from the sea coast (OpenStreetMap). The centre of Dhahran sits about 16 m above sea level (SRTM open elevation data).

Team note on Dhahran: 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..

Dhahran sits about 16 m above sea level, and its centre lies roughly 5.9 km from the coast. Those two facts shape how we approach water tank waterproofing here. At 16 m above sea level the city is not low-lying, so rooftop and elevated tanks are exposed to open air and direct sun rather than sitting in damp ground. Being about 5.9 km from the sea means the air carries salt and humidity that can accelerate wear on coatings and fittings, so a preventive check should look closely at the external surfaces and their seals, not only the water inside.

Each of these facts has a practical effect on the work. Because the tanks sit above ground in a fairly open setting, a periodic inspection focuses on surface condition, edge seals and the joints where pipes enter, since these take the most weather. The short distance to the coast makes us pay particular attention to coating adhesion and any signs of salt-related breakdown. For a tank interior, the coating we apply is chosen to suit water contact, and our quotes reflect the typical rates for tank internal coating, which run from SAR 25 to SAR 60 per m², depending on the area and condition of the surface. Where a tank shares a roof or a neighbouring surface, liquid roof waterproofing, typically SAR 8 to SAR 25 per m², may be assessed alongside it.

Owners often avoid several common mistakes when they schedule regular checks. They do not wait for visible leaks before calling for an inspection, because early hairline cracks are far cheaper to treat than damage that has spread. They do not paint over a damp or dusty surface, which stops new coating from bonding. They do not ignore the places where a tank meets its supports or pipework, since these joints move and crack first. Finally, they do not treat waterproofing as a one-time job: a periodic check each year keeps small defects from becoming costly repairs and keeps the tank safe to use.

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

Signs that call for water tank waterproofing

The following signs are worth checking before they grow:

• 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.
• Construction joints.

Tools we use in Dhahran

The steps in order

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 — Dhahran

Short answers for Dhahran

What we advise against

• Using a material that is not intended for drinking water

What you get after the work

The written output: the material name, its batch number and the fill-test result. The report is numbered and can be checked with its verification code.