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

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

Before we start: what we know about Qatif

Team note on Qatif: 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.. Qatif is about 2.5 km from the sea coast (OpenStreetMap).

The centre of Qatif sits about 5 m above sea level (SRTM open elevation data).

Basement and foundation waterproofing for company buildings in Qatif most often begins with water pressing through the walls and floor slab, not with a visible leak from above. Company premises such as warehouses, offices with underground parking, and service basements are usually fitted with concrete that was never designed to hold back groundwater for years. The result is damp patches along the base of walls, efflorescence, and sometimes standing water after rain. Before any work begins, the first task is to identify whether the water comes from the surrounding soil, from a construction joint, or from a crack, because each path needs a different treatment.

Qatif sits about 5 m above sea level, and its centre is about 2.5 km from the coast. That combination means the ground around a basement can hold saline moisture and the water table may rise close to the foundation after heavy rain. Salt carried in that moisture attacks the concrete and the render, so a surface sealer alone will often fail within a short period. For this reason the approach here starts by treating the wet face of the structure, then choosing between a cementitious coating, a bitumen membrane, or an epoxy system depending on whether the wall is exposed to pressure or only to damp. Where cracks are present, injection is planned as a separate line item so the cost of each stage stays visible to the client.

Before a site visit, a company should prepare a few details that let the surveyor give a useful estimate. Ask for the total area of the basement walls and floor in square metres, the length of any visible cracks in metres, and whether the space is used for storage, parking, or plant, since that affects the system chosen. Ask whether there is a history of flooding, when the problem was first noticed, and whether any previous coating has been applied and removed. Request that the surveyor explain how the work will be scoped by item, with rates such as basement waterproofing at SAR 50–150 per m², crack injection at SAR 40–120 per metre, and epoxy coating at SAR 35–90 per m², so the final figure can be checked against the agreed site measurements.

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

Signs that call for basement & foundation waterproofing

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

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

Causes we see in the field

• A common cause: cracks at construction joints.
• A high groundwater level — we check this before anything else.
• Rainwater draining towards the foundation — we check this before anything else.

How we choose the tool in Qatif

The steps in order

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.

Facts and costs — Qatif

Short answers for Qatif

Mistakes that cost more

• Painting the basement wall while the water comes from outside

What you get after the work

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