Water tank waterproofing for villas in Alrass

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

Why water tank waterproofing differs in Alrass

Main roads in or near Alrass: King Abdulaziz Road, King Fahd Road, King Salman Road. The centre of Alrass sits about 695 m above sea level (SRTM open elevation data).

Team note on Alrass: 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..

Is your water tank leaking, and does the problem need a full repair or only a coating? Most villa owners in Alrass ask this first, and the answer depends on what the inspection finds. The centre of Alrass sits about 695 m above sea level, so the tank is set on higher ground than many parts of the wider region. For tank work, the relevant costs are the internal coating, which runs SAR 25–60 per m², and crack injection, which is priced at SAR 40–120 per metre. Epoxy coating, at SAR 35–90 per m², is another option when the inside surface needs sealing. Knowing these ranges helps you judge quotes before any work starts.

The inspection normally begins by draining the tank so the technician can see the full inner surface. They look for hairline cracks, flaking old coating, and wet patches around the joints and base. Cracks are marked and measured, because injection is charged by the metre, while the remaining surface is measured in square metres for coating. The technician also checks the outside where the tank meets the roof or the wall, since water can enter from above as well as from below. Once the damage is mapped, the inspector can separate the work that is needed now from work that can wait, and give you a written breakdown of each item.

Before the visit, empty the tank as far as practical and leave the access hatch clear so the technician can reach the interior safely. Gather any previous repair records or invoices, since they show what was done earlier and which materials were used. Note when you first saw leaks, how much water loss you noticed, and whether the stains appear inside the villa, on the walls, or on the ceiling below the roof. If the tank sits on the roof, clear loose debris from the surrounding area so the outer surface can be checked properly. These details let the inspector work faster and give you a clearer estimate.

Villas often have several lines and tanks; we test them one at a time so the cause is clear.

When do you need water tank waterproofing?

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

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

The most common causes

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

How we choose the tool in Alrass

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.

Quick comparison: facts and costs in Alrass

Short answers for Alrass

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.