Water tank waterproofing for duplexes in Buraydah

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

Before we start: what we know about Buraydah

The centre of Buraydah sits about 606 m above sea level (SRTM open elevation data). Team note on Buraydah: 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..

Water tank waterproofing for duplexes in Buraydah starts with the basics of the site. The centre of Buraydah sits about 606 m above sea level (SRTM open elevation data), which means the city is well above the coast and its water and drainage patterns are shaped by inland conditions rather than sea-level flooding. Before any work begins, the technician checks the tank's condition from the inside and outside, looking first for cracks, hollow patches, and any staining that shows water has already found a route through the structure. Crack injection is priced per metre, usually in the range of SAR 40–115 per m, so the length of each crack shapes the quote as much as the surface area does. The first check also covers the tank's internal finish, because tank internal coating is quoted per m² at SAR 25–55 per m², and a sound base decides which product will bond.

Several points can only be settled at the site visit. The technician confirms the true surface area, whether the tank is open or closed, and how the duplex's water supply connects to the tank, since these affect access and how long the work will keep the supply off. The choice between epoxy coating (SAR 35–85 per m²) and spray foam (SAR 25–65 per m²) depends on what the surface is made of and how much moisture is still present, and that is judged in person rather than from photos. Any sign of movement in the walls or slab, or water entering from outside rather than from inside the tank, is also noted on the visit so the scope can be changed before work starts.

To help the technician, the household should have the following ready: a note of when leaks were first seen, the approximate size and location of any cracks, the tank's material and age if known, and the duplex's access route to the roof and tank area. Information about whether the tank has been drained recently, and whether any previous repair product was used, is also useful. Clear access to the tank and a stable power supply for equipment will speed the visit. A short written summary of these details lets the technician arrive ready to measure and advise, rather than spending the visit gathering basic facts.

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

Signs that call for water tank waterproofing

The following signs are worth checking before they grow:

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

The most common causes

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

How we choose the tool in Buraydah

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 — Buraydah

Common questions about water tank waterproofing in Buraydah

Common mistakes we see

• Using a material that is not intended for drinking water

What you get after the work

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