Basement & foundation waterproofing in Dhahran: for companies (annual contract)

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

Before we start: what we know about Dhahran

Dhahran is about 5.9 km from the sea coast (OpenStreetMap). The centre of Dhahran sits about 16 m above sea level (SRTM open elevation data).

Team note on Dhahran: 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..

Basement and foundation leaks are the most common problem for commercial buildings in Dhahran, and they usually show up as damp patches on lower walls, efflorescence, or water pooling near the slab edge. For companies, a leak in a basement store, server room or parking level can halt operations quickly, so the first job is to find where water enters rather than simply sealing the surface. Cracks in the foundation are often the source, and crack injection is priced at SAR 40–120 per metre, which makes it a targeted option when the leak line is clear. Where the whole wall or floor needs protection, basement waterproofing is priced at SAR 50–150 per m².

The local setting changes how the work should be approached. The centre of Dhahran sits about 16 m above sea level, and the town is about 5.9 km from the sea coast. That combination means the ground is not dominated by a high water table, but saline and moisture-laden air still affects exposed concrete and render, so the choice of coating matters. Epoxy coating, at SAR 35–90 per m², suits interior walls and floors that need a hard, sealed finish, while bitumen membrane, at SAR 15–35 per m², is a common choice for external foundation walls before backfilling. Where a basement wall also needs insulation against heat and damp, XPS boards at SAR 12–30 per m² can be fitted as part of the same scope. Water storage areas on the roof or in the building need separate treatment, with liquid roof waterproofing at SAR 8–25 per m² and tank internal coating at SAR 25–60 per m².

Before the site visit, a company should ask the contractor which part of the structure they intend to treat and why, and how they will locate the source of water before proposing a method. Ask for a clear scope that separates crack repair, wall coating and any insulation work, and request that each be priced by its own unit rate so the budget can be compared line by line. Confirm how the work will be carried out around your operating hours, how stored equipment or stock will be protected, and who will be responsible for checking the results after the first heavy rain or irrigation cycle. A clear list of these points before the visit makes the quotation far easier to judge.

For companies, an annual contract sets the scope, the visit schedule and the reports in writing.

Signs worth paying attention to

These are the signs most often linked to basement & foundation waterproofing:

• Salt marks at the bottom of the walls
• Damp basement walls
• Water seeping in after rain

Causes we see in the field

• A common cause: a high groundwater level.
• Rainwater draining towards the foundation.
• Cracks at construction joints.

Tools we use in Dhahran

How the work is done, step by step

1. Finding the source: Groundwater, rain or a pipe — each needs a different treatment.
2. Preparation: Surfaces are cleaned and opened where needed.
3. Injection: Active cracks are injected.
4. Waterproofing layers: The system is applied on the right side of the wall where possible.
5. Follow-up: Readings are repeated after the treatment.

Dhahran in facts and sources

Questions from Dhahran

Mistakes that cost more

• Painting the basement wall while the water comes from outside

What you receive

The written output: the source, the treatment and the follow-up result. The report is numbered and can be checked with its verification code.