Water tank waterproofing for duplexes in Abu Arish

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

What is specific about Abu Arish for water tank waterproofing

The centre of Abu Arish sits about 67 m above sea level (SRTM open elevation data). Team note on Abu Arish: 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..

A typical owner of a duplex in Abu Arish has usually bought the property for its family space and its rooftop water tank, and rarely thinks about the tank until a damp patch appears on a bedroom wall or water tastes slightly off. By then the leak has often been running for months, and the repair involves more than a single coat of paint. Owners of duplexes share the roof and tank arrangement with a neighbour, so a problem in one unit can quickly affect the other, which makes early attention worthwhile.

The local facts shape the job. The centre of Abu Arish sits about 67 m above sea level, so the area is not low-lying, but water still has to be lifted and stored in a tank that sits exposed to sun and rain. Tank internal coating is priced at SAR 25–60 per m², and liquid roof waterproofing at SAR 8–25 per m², so the roof and the tank are two separate line items that should be scoped together. Crack injection at SAR 40–120 per metre is often the right answer for a hairline seam in a concrete tank wall, while spray foam at SAR 20–45 per m² suits broader surfaces. Because the figures vary so widely, an owner should expect the final cost to depend on the size of the tank and how much of the surface truly needs work.

A sensible sequence starts with draining the tank completely and cleaning the interior so the inspector can see every wall, floor and seam. Next, check the roof slab and the tank lid for cracks and ponding, and mark each defect before any product is chosen. Then agree the scope with the contractor in writing, listing each area, its square metres or linear metres, and the chosen method, whether tank internal coating, crack injection, or liquid roof waterproofing. Finally, keep the tank closed and dry for the curing period the product requires, refill slowly, and record the date and the invoice so future owners of the duplex can see what was done and when.

In a duplex, the two floors often share lines, so tests are done floor by floor.

When do you need water tank waterproofing?

The following signs are worth checking before they grow:

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

Where the problem usually comes from

• Damaged old coating.
• A common cause: cracks in the walls or floor.
• 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.

Abu Arish in facts and sources

Short answers for Abu Arish

Mistakes that cost more

• 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.