Water tank waterproofing for apartments in Tarout

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

Water tank waterproofing in Tarout: the local context

Main roads in or near Tarout: Uhud Road, Al Khaleej Road, Al Aimmah Bridge. Team note on Tarout: 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..

Tarout is about 0.9 km from the sea coast (OpenStreetMap). The centre of Tarout sits about 3 m above sea level (SRTM open elevation data).

An apartment owner in Tarout often notices a damp patch on a ceiling or a dark stain near the bathroom and wonders whether the water tank on the roof is the cause. The tank sits in full sun and is refilled regularly, so its walls and joints work hard over the years. When the coating starts to peel or hairline cracks open, water can seep into the structure below, and by the time it shows on the ceiling the damage is already spreading.

The local facts matter here. The centre of Tarout sits about 3 m above sea level, so the town is very flat and low-lying, and rainwater and groundwater do not drain away quickly. The town is also about 0.9 km from the sea coast, which means the air carries salt and moisture that can speed up the breakdown of exposed coatings and sealants. For an owner, this means that a tank and roof which look sound from a distance may still be losing their protection, and that wet areas stay damp longer than they would further inland.

A sensible sequence starts with inspection. Drain the tank, clean it, and look closely at the internal surface, the corners, and the joints for cracks or flaking. Next, check the roof and the bathroom floors above the apartment for ponding, cracks, or soft spots. Then decide on the repair: a tank internal coating is priced at SAR 25–60 per m², liquid roof waterproofing at SAR 8–25 per m², and crack injection at SAR 40–120 per metre. Ask the contractor to measure the exact area and length before you agree on a total. Once the work is finished, refill the tank slowly, watch the joints and ceiling for a few days, and schedule a re-check once a year so small problems are caught early.

In an apartment, a problem may start in your unit or in a shared line; we separate the two before any work.

When do you need water tank waterproofing?

The following signs are worth checking before they grow:

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

Causes we see in the field

• Construction joints — we check this before anything else.
• Cracks in the walls or floor — we check this before anything else.
• Damaged old coating — we check this before anything else.

Tools and methods, and when we use them

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 — Tarout

Questions from Tarout

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.