Basement & foundation waterproofing for schools in Aldarb
In short: Basement & foundation waterproofing for schools in Aldarb starts with the moisture meter for ceilings and walls, then the crack injection (polyurethane or epoxy), before anything is opened. Aldarb is about 18.7 km from the sea coast (OpenStreetMap). Published price: Crack injection (per metre), SAR 40–120 per m; anything else is quoted after the inspection.
Why basement & foundation waterproofing differs in Aldarb
Aldarb is about 18.7 km from the sea coast (OpenStreetMap). The centre of Aldarb sits about 79 m above sea level (SRTM open elevation data).
Aldarb sits about 79 m above sea level, and it lies roughly 18.7 km inland from the coast. For a school basement, that combination matters. Elevation and distance from the sea shape how groundwater moves and how salts and moisture reach a building, so a site here is assessed on its own conditions rather than treated like a coastal plot or a high-desert one. Surveys focus on where water actually collects around the foundation and how the ground drains after heavy rain, which tells us where the protection needs to be heaviest.
Those site facts translate into practical choices. Because the centre of Aldarb is not at sea level, the work starts with understanding how runoff reaches the basement walls, not with a single standard product. Basement waterproofing for a school is priced from SAR 50 to SAR 150 per m², and where cracks are found, crack injection runs from SAR 40 to SAR 120 per metre. Bitumen membrane, at SAR 15 to SAR 35 per m², and XPS boards, at SAR 12 to SAR 30 per m², are options for the outer face when the wall can be exposed, while epoxy coating at SAR 35 to SAR 90 per m² suits interior surfaces that need a durable finish. Spray foam, at SAR 20 to SAR 45 per m², can fill awkward voids in the same floor plan.
Owners of school buildings in Aldarb often avoid the same few mistakes. Many treat the basement as a single surface and skip the cracks, which then leak under the finish they paid for. Others choose a coating that does not suit the wall's condition, or they coat rooftops with liquid systems priced at SAR 8 to SAR 25 per m² without checking the drainage that carries water away. Some also delay repairs until stains spread, when a small injection job would have been enough. Clear inspection before any product is chosen keeps the budget focused where the water really enters.
For schools, the larger jobs are planned for weekends and holidays.
Signs worth paying attention to
If you notice one of these signs in Aldarb, it is a good moment to talk to the team:
- Salt marks at the bottom of the walls
- Damp basement walls
- Water seeping in after rain
Where the problem usually comes from
- A high groundwater level — we check this before anything else.
- A common cause: rainwater draining towards the foundation.
- A common cause: cracks at construction joints.
How we choose the tool in Aldarb
| Tool | What it finds | When we use it in Aldarb |
|---|---|---|
| Roof, falls and drains survey | Ponding areas and the condition of the old layer | Limits: shows the condition, not the material alone |
| Crack injection (polyurethane or epoxy) | Stopping active water through cracks | Limits: treats the crack, not the water source |
| Moisture meter for ceilings and walls | Where water is entering now, from inside | Limits: measures the effect, not the water path |
The steps in order
- Finding the source: Groundwater, rain or a pipe — each needs a different treatment.
- Preparation: Surfaces are cleaned and opened where needed.
- Injection: Active cracks are injected.
- Waterproofing layers: The system is applied on the right side of the wall where possible.
- Follow-up: Readings are repeated after the treatment.
Aldarb in facts and sources
| Item | Value | Source |
|---|---|---|
| District profile | The centre of Aldarb sits about 79 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| District profile | Aldarb is about 18.7 km from the sea coast (OpenStreetMap) | © OpenStreetMap contributors (ODbL) |
| Crack injection (per metre) | SAR 40–120 per m | Owner price list (Aldarb) |
| Basement waterproofing (per m²) | SAR 50–150 per m² | Owner price list (Aldarb) |
Short answers for Aldarb
Where does basement & foundation waterproofing for schools start in Aldarb?
We start with finding the source (groundwater, rain or a pipe — each needs a different treatment), then preparation (surfaces are cleaned and opened where needed).
What does basement & foundation waterproofing cost in Aldarb?
From our published price list: Crack injection (per metre) SAR 40–120 per m; Basement waterproofing (per m²) SAR 50–150 per m². Quantities are confirmed at the inspection.
What do I receive after the work?
The source, the treatment and the follow-up result, in a technical report that carries a verification code.
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.
If you live in Aldarb and are new to the area
- If you rent, tell your landlord or building management before the visit and agree in writing who pays; the written report can be shared with them.
- Keep photos of the problem and of any earlier repairs — they help the technician compare before and after.
- Prices are in Saudi riyals (SAR); the final price is confirmed after the inspection, before any work starts.
- Have access ready to the water meter, the tank hatches, the roof and the main valve; in apartment buildings the roof keys are often with the building guard (haris).
Sources and method
- SRTM (NASA) open data
- © OpenStreetMap contributors (ODbL)
- Owner price list for Aldarb
- Local pages are published only after a quality gate: real local facts, text similarity of no more than 15% with any other English page, and a claims check.
- النسخة العربية