Basement & foundation waterproofing for duplexes in Alula
In short: Basement & foundation waterproofing for duplexes in Alula starts with the moisture meter for ceilings and walls, then the crack injection (polyurethane or epoxy), before anything is opened. The centre of Alula sits about 697 m above sea level (SRTM open elevation data). Pricing starts from Crack injection (per metre) (SAR 40–120 per m), and other items are quoted after the visit.
What is specific about Alula for basement & foundation waterproofing
Main roads in or near Alula: King Abdullah Road. The centre of Alula sits about 697 m above sea level (SRTM open elevation data).
Does a duplex in Alula really need basement waterproofing, given how dry the desert air feels? The answer depends on the site rather than the climate alone. The centre of Alula sits about 697 m above sea level, and a basement or foundation can still take on water from rain runoff, groundwater movement or cracks that develop over time. Basement waterproofing here is priced at SAR 50–150 per m², while crack injection is priced at SAR 40–120 per m. Knowing these ranges helps owners decide between sealing a whole below-grade wall and targeting a single problem line.
A visit usually starts with a walk around the outside of the duplex to check how the ground slopes toward the foundation and where downpipes discharge. The inspector then moves inside the basement, looking at wall surfaces, floor-to-wall joints and any cracks that show damp staining or efflorescence. Each defect is noted by its length and location so that crack injection can be measured per metre, and each wall area is recorded in square metres so the basement and coating options can be compared on the same basis. The inspection ends with a discussion of which materials suit the condition, such as epoxy coating, spray foam, bitumen membrane or XPS boards, each with its own per m² range.
Before the visit, gather the duplex's original plans or any drawings you have, and note where water has appeared in the past, including the season and the rooms affected. Clear shelving and stored items away from basement walls so the surfaces can be checked properly. If the duplex has a bathroom or water tank close to the foundation, mention these too, since bathroom waterproofing (SAR 15–40 per m²) and tank internal coating (SAR 25–60 per m²) are sometimes handled in the same job. Having this information ready lets the inspection focus on what matters most to your building.
In a duplex, the two floors often share lines, so tests are done floor by floor.
Signs that call for basement & foundation waterproofing
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 high groundwater level — we check this before anything else.
- Rainwater draining towards the foundation — we check this before anything else.
- Cracks at construction joints — we check this before anything else.
How we choose the tool in Alula
| Tool | What it finds | When we use it in Alula |
|---|---|---|
| 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.
Facts and costs — Alula
| Item | Value | Source |
|---|---|---|
| District profile | The centre of Alula sits about 697 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| Roads | Main roads in or near Alula: King Abdullah Road | Kashf data (owner) |
| Crack injection (per metre) | SAR 40–120 per m | Owner price list (Alula) |
| Basement waterproofing (per m²) | SAR 50–150 per m² | Owner price list (Alula) |
Short answers for Alula
Where does basement & foundation waterproofing for duplexes start in Alula?
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 Alula?
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
The written outputs
You receive: the source, the treatment and the follow-up result, in a technical report with a verification code.
Practical notes for residents of Alula
- Keep photos of the problem and of any earlier repairs — they help the technician compare before and after.
- 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.
- 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).
- Prices are in Saudi riyals (SAR); the final price is confirmed after the inspection, before any work starts.
Sources and method
- SRTM (NASA) open data
- Kashf data (owner)
- Owner price list for Alula
- 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