Basement & foundation waterproofing for schools in Taif

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

What is specific about Taif for basement & foundation waterproofing

The centre of Taif sits about 1673 m above sea level (SRTM open elevation data). Team note on Taif: 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 work starts at a school basement in Taif, the technician checks the altitude first, because the centre of Taif sits about 1673 m above sea level. At that height, the air is drier and the temperature swings between day and night can be large, so the crew looks at how the existing surfaces have moved and cracked over time. The first check is the basement walls and slab for cracks, since crack injection is priced per metre at SAR 40–115 per m, and the team needs to know how many metres of crack are present before choosing a method. Next, the technician looks at the basement floor and walls to judge whether the area suits basement waterproofing at SAR 50–145 per m² or a lighter treatment. Any wet bathrooms in the school are noted separately, as bathroom waterproofing runs at SAR 15–40 per m².

Some points are left to the site visit, because they cannot be settled from a desk. The exact condition of the ground outside the walls, the drainage around the building, and whether water is coming in from above or from below all have to be seen in person. The team also decides whether an epoxy coating at SAR 35–85 per m² or a spray foam at SAR 20–45 per m² suits the surface, and whether any water tank in the building needs an internal coating at SAR 25–55 per m². Roof areas are measured on site, since liquid roof waterproofing at SAR 10–25 per m² and bitumen membrane at SAR 15–35 per m² depend on the actual surface and its slope.

To help the technician, it is useful to record the school's layout and the age of each section before the visit, along with any past leaks and the dates they were repaired. Photographs of damp patches, and notes on when they appear after rain, help the crew plan. If insulation is part of the work, XPS boards at SAR 10–30 per m² can be considered, and their placement should be marked on the plan. Access to the basement, the roof and any water tanks should be arranged with school staff ahead of time, so that the work can be scheduled without disrupting lessons.

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

Signs that call for 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

Causes we see in the field

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

How we choose the tool in Taif

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.

Taif in facts and sources

Short answers for Taif

Common mistakes we see

• 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.