Water tank waterproofing for duplexes in Al Qyrwan, Riyadh
الخلاصة: In short: In Al Qyrwan (Riyadh), water tank waterproofing for duplexes begins with the fill test with level monitoring and the crack injection (polyurethane or epoxy); nothing is opened until the position is clear. The centre of Al Qyrwan sits about 692 m above sea level (SRTM open elevation data).
Water tank waterproofing in Al Qyrwan: the local context
The centre of Al Qyrwan is at 24.8794, 46.5626, about 21.7 km from the centre of Riyadh, with an approximate radius of 8 km. The approximate area shown on the map is centred here. The centre of Al Qyrwan sits about 692 m above sea level (SRTM open elevation data).
The nearest wadi channel is about 0.4 km from the centre of Al Qyrwan (OpenStreetMap). Main roads in or near Al Qyrwan: King Khalid Road, King Fahd Road, Prince Mohammed bin Saad bin Abdulaziz Road.
Picture a duplex owner in Al Qyrwan who notices a damp patch spreading across the ceiling of the upper floor after a rainy week. The water tank on the roof has been in place for years, and the owner is not sure whether leaks from the tank or from the roof are to blame. They want a clear plan before paying anyone, and they want to know what the work will realistically cost before anyone starts.
For this part of Riyadh, the local facts shape that plan. The centre of Al Qyrwan sits at 24.8794, 46.5626, about 21.7 km from the centre of Riyadh, with an approximate radius of 8 km, so a duplex here is a suburban home rather than a city-centre building. The centre of Al Qyrwan sits about 692 m above sea level, and the nearest wadi channel is about 0.4 km from the centre of Al Qyrwan, which matters because water runoff during heavy rain can move quickly through the area. A roof and tank that drain well, and walls that resist water arriving from the ground, deserve as much attention as the tank itself.
A sensible sequence starts with inspection. Check the roof surface and the tank walls for cracks, and look for staining on ceilings below. Treat basement and bathroom areas as separate problems, because they need different materials. Budget with the published ranges in mind: liquid roof waterproofing runs SAR 10–25 per m², bitumen membrane runs SAR 15–35 per m², and tank internal coating runs SAR 25–65 per m². Where cracks appear, crack injection is priced at SAR 40–125 per metre. Choose the system that matches each surface, apply it in dry weather, and keep records of what was done and when, so the next inspection starts from a known point.
In a duplex, the two floors often share lines, so tests are done floor by floor.
When do you need water tank waterproofing?
These are the signs most often linked to water tank waterproofing:
- A tank that leaks after testing
- Deposits and flaking inside the tank
- Unusual colour or taste in the water
Causes we see in the field
- A common cause: damaged old coating.
- Cracks in the walls or floor.
- Construction joints — we check this before anything else.
Tools we use in Al Qyrwan
| Tool or method | What it measures | Why it is chosen here |
|---|---|---|
| Moisture meter for ceilings and walls | Where water is entering now, from inside | Limits: measures the effect, not the water path |
| Fill test with level monitoring | Whether a tank coating holds after the work | Limits: takes time to monitor the level |
| Crack injection (polyurethane or epoxy) | Stopping active water through cracks | Limits: treats the crack, not the water source |
The steps in order
- Emptying and ventilation: The tank is emptied and ventilated before entry.
- Cleaning and preparation: Loose material is removed down to a sound surface.
- Crack treatment: Active cracks are treated first.
- Coating layers: A material intended for drinking-water tanks is applied.
- Disinfection and fill test: The tank is disinfected and the level is monitored after filling.
Quick comparison: facts and costs in Al Qyrwan
| Item | Value | Source |
|---|---|---|
| District profile | The centre of Al Qyrwan sits about 692 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| Centre of Al Qyrwan | 24.87939, 46.56262 | © OSM |
| Distance from the centre of Riyadh | about 21.7 km | Calculated from the coordinates |
| District profile | The nearest wadi channel is about 0.4 km from the centre of Al Qyrwan (OpenStreetMap) | © OpenStreetMap contributors (ODbL) |
| Roads | Main roads in or near Al Qyrwan: King Khalid Road, King Fahd Road, Prince Mohammed bin Saad bin Abdulaziz Road | Kashf data (owner) |
| Tank internal coating (per m²) | SAR 25–65 per m² | Owner price list (Riyadh) |
Common questions about water tank waterproofing in Al Qyrwan
Is Al Qyrwan within our service area in Riyadh?
The centre of Al Qyrwan is at 24.8794, 46.5626, about 21.7 km from the centre of Riyadh. The exact address of your property is set when you book.
What is the first step of water tank waterproofing for duplexes?
We start with emptying and ventilation (the tank is emptied and ventilated before entry), then cleaning and preparation (loose material is removed down to a sound surface).
How much does water tank waterproofing cost in Al Qyrwan?
From our published price list: Tank internal coating (per m²) SAR 25–65 per m². Quantities are confirmed at the inspection.
What do I get at the end?
The material name, its batch number and the fill-test result, in a technical report that carries a verification code.
Mistakes that cost more
- Using a material that is not intended for drinking water
What you receive
The written output: the material name, its batch number and the fill-test result. The report is numbered and can be checked with its verification code.
Practical notes for residents of Al Qyrwan
- 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).
- 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.
Sources and method
- © OpenStreetMap contributors (ODbL)
- SRTM (NASA) open data
- Kashf data (owner)
- Owner price list for Riyadh
- 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