Epoxy coating & waterproofing for schools in Yanbu

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

Before we start: what we know about Yanbu

Yanbu is about 1.2 km from the sea coast (OpenStreetMap). The centre of Yanbu sits about 6 m above sea level (SRTM open elevation data).

Main roads in or near Yanbu: King Abdulaziz Road, Umluj Road, Al Hanan Street. Team note on Yanbu: 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..

Before any epoxy or waterproofing work starts at a school in Yanbu, the technician checks how close the site sits to the coast and how high it stands above the sea. The centre of Yanbu sits about 6 m above sea level, and the city is about 1.2 km from the sea coast. Those two facts shape the first questions: how damp the ground and walls are likely to be, and how much salt-laden air will reach exposed surfaces. A school near the low-lying parts of town and a school on higher ground can face different moisture loads, so the first pass compares the building's position with these figures before any product is chosen.

Several things are left to the site visit, because they cannot be judged from a distance. The technician walks the building to see where water actually gets in, whether that is through a basement wall, a bathroom floor, a flat roof, a water tank, or a crack in a block wall. They look at the condition of the existing surface, whether it is sound, dusty, oily or already peeling, and they check how the room is used, since a corridor and a wet washroom need different treatment. The choice between options such as spray foam, liquid roof waterproofing, bitumen membrane or XPS boards depends on what the site shows, and the indicative ranges of SAR 8–25 per m² for liquid roof waterproofing and SAR 15–35 per m² for bitumen membrane are only a starting reference until the scope is confirmed on the ground.

Some information helps the technician prepare. Basement waterproofing is priced at SAR 50–150 per m², bathroom waterproofing at SAR 15–40 per m², and epoxy coating at SAR 35–90 per m², while crack injection is quoted at SAR 40–120 per metre. Tank internal coating falls within SAR 25–60 per m². Knowing which of these items applies, and having the measurements of floor, wall and roof areas or crack lengths, lets the technician give a clearer estimate. Access arrangements matter too, so that work can be scheduled around classes and the school day.

For schools, the larger jobs are planned for weekends and holidays.

When do you need epoxy coating & waterproofing?

The following signs are worth checking before they grow:

• A warehouse floor that is wearing away
• A tank that needs an easy-to-clean surface
• Oil stains on a floor

Causes we see in the field

• A damp surface that ruins adhesion — we check this before anything else.
• A common cause: insufficient preparation.

Tools and methods, and when we use them

From the first visit to the report

1. Surface moisture reading: Epoxy is applied only when the substrate is dry enough.
2. Careful preparation: Grinding and cleaning for adhesion.
3. Layers: Primer and body coats as specified.
4. Inspection: Thickness and curing are checked.

Quick comparison: facts and costs in Yanbu

Questions from Yanbu

What we advise against

• Coating over a damp surface

The written outputs

The written output: the epoxy system, thickness and curing time. The report is numbered and can be checked with its verification code.