Basement & foundation waterproofing for schools in Afif

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

What is specific about Afif for basement & foundation waterproofing

The centre of Afif sits about 1040 m above sea level (SRTM open elevation data). Main roads in or near Afif: King Abdulaziz Road, King Faisal Road, Airport Road.

Team note on Afif: 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..

A school building in Afif, sitting around 1040 m above sea level, often has a basement or lower floor used for storage, workshops or a canteen store. The owner of such a property usually notices the problem first as a damp patch on a wall, a musty smell after rain, or a crack that seems to widen each season. By the time water is visible on the floor, the moisture has usually been working through the foundation for some time, so early attention saves considerable disruption to lessons and stored equipment.

The local altitude matters because it places Afif on the higher ground of the region, where rain can arrive in heavy bursts and run quickly down slopes toward building walls. Water that is pushed against a basement wall by the ground around it will find any weak joint or hairline crack. For a school, this means the waterproofing decision should cover the whole below-ground envelope, not only the spot where damp is visible. Basement waterproofing is typically priced at SAR 50–150 per m², crack injection at SAR 40–120 per metre, and epoxy coating at SAR 35–90 per m², so a property manager can compare the scope of each option before committing.

A sensible sequence begins with a dry inspection after a rainy spell, marking every crack and damp line on a plan of the walls and floor. Next, the cracks should be sealed by crack injection, since that stops the direct entry route before any surface work begins. The walls and floor can then be treated, with a bitumen membrane at SAR 15–35 per m² or spray foam at SAR 20–45 per m² used for the exposed below-ground surfaces, and epoxy coating applied where a hard, cleanable finish is needed. Any water storage tanks on the roof or in the grounds should be checked too, with internal coating at SAR 25–60 per m² where the tank lining is worn. Finally, the roof and drainage should be reviewed, because liquid roof waterproofing at SAR 8–25 per m² and XPS boards at SAR 12–30 per m² can reduce the water load reaching the foundation in the first place.

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

When do you need basement & foundation waterproofing?

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

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

The most common causes

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

How we choose the tool in Afif

From the first visit to the report

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.

Quick comparison: facts and costs in Afif

Questions from Afif

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.