Water tank waterproofing in Allith: before buying or handover

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

Before we start: what we know about Allith

Main roads in or near Allith: Al Laith Road, Amr Bin Al Aas Street. The centre of Allith sits about 5 m above sea level (SRTM open elevation data).

Allith is about 1.2 km from the sea coast (OpenStreetMap).

Water tank waterproofing in Allith is most often asked about when a buyer or new owner inherits a tank that has been left to age. The most common problem is seepage through cracks and joints in the concrete walls and floor, which lets water leak out and, over time, lets contamination in. Leaks tend to show up as damp patches on the outside of the tank, staining on the surrounding ground, or a drop in water level that nobody can explain. In most cases the fix is an internal tank coating, which is priced at SAR 25–60 per m², and crack injection for specific lines of failure, priced at SAR 40–120 per metre.

The location shapes that approach. The centre of Allith sits about 5 m above sea level, and the town is about 1.2 km from the sea coast. That closeness to the coast means the air carries salt and humidity, which can speed up corrosion of exposed metal fittings and make surface coatings age faster than they would further inland. For that reason, a tank in Allith should be checked for salt-related wear on its fixings and access points as well as for concrete cracks. Its low elevation also means that water and damp can sit around the base of a tank, so drainage and the condition of the tank floor deserve close attention. A coating that suits a dry inland site may not be the right choice here, so the specification should reflect the coastal exposure rather than a generic template.

Before the visit, ask the seller or the handover contact a few direct questions. Find out when the tank was last cleaned, coated or repaired, and whether any previous work included crack injection or a new internal lining. Ask whether the water level has ever dropped without explanation, and whether there are visible damp marks on the outside walls or the ground beside the tank. Request access to the tank, the lid and the overflow so the inspection can be done properly. Finally, confirm which parts of the tank are included in the job and which are not, so that the quote covers the real condition of the structure and not only its visible surfaces.

Before buying or taking over a property, an inspection gives you findings in writing before you sign.

When do you need water tank waterproofing?

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

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

Causes we see in the field

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

How we choose the tool in Allith

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.

Facts and costs — Allith

Short answers for Allith

Common mistakes we see

• 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.