Floor & balcony waterproofing for residential buildings in Aljumum
In short: In Aljumum (Aljumum), floor & balcony waterproofing for residential buildings begins with the roof, falls and drains survey and the moisture meter for ceilings and walls; nothing is opened until the position is clear. The centre of Aljumum sits about 200 m above sea level (SRTM open elevation data). Pricing starts from Bathroom waterproofing (per m²) (SAR 15–40 per m²), and other items are quoted after the visit.
Before we start: what we know about Aljumum
Team note on Aljumum: 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.. The centre of Aljumum sits about 200 m above sea level (SRTM open elevation data).
Aljumum sits about 200 m above sea level, and the most common problem we see in residential floors and balconies here is water finding its way through cracks and failed joints where balcony slabs meet the main structure. Because the ground is not low-lying, water tends to run off rather than pool, but it still penetrates wherever the surface has cracked, so the first job is to find the entry points rather than simply coat the whole surface.
That altitude changes how we approach the work. Rain here arrives in short, heavy bursts and then drains quickly, so the waterproofing system has to handle repeated wetting and drying rather than long standing water. For balconies and terraces, we typically combine crack injection at a cost of SAR 40–120 per metre with a liquid membrane, while a bitumen membrane at SAR 15–35 per m² is often used where the surface needs a heavier, more continuous layer. Bathrooms that sit above habitable rooms receive the same attention at SAR 15–40 per m², because a leak from above is usually the one residents notice first. Where a roof or terrace is exposed, liquid roof waterproofing at SAR 8–25 per m² can be applied, and XPS boards at SAR 12–30 per m² are an option where insulation is also wanted beneath a finish.
Before the visit, ask the provider to confirm which surfaces they will inspect, whether they will mark and photograph existing cracks, and how they plan to handle drainage outlets and upstands. Ask what system they propose for each area and why, and request a written breakdown using the per-square-metre or per-metre rates above. It is also sensible to ask how long the work will take and when the area can be used again, so you can plan around the household.
For a residential building, shared risers, tanks and pumps are checked as one system.
Signs worth paying attention to
These are the signs most often linked to floor & balcony waterproofing:
- A wrong fall towards the door threshold
- Water passing from the balcony to the floor below
- Damp under the light well
Causes we see in the field
- A common cause: incorrect falls.
- A common cause: a threshold without waterproofing.
- A common cause: a blocked drain.
Tools and methods, and when we use them
| Method | What it helps with | Its role in Aljumum |
|---|---|---|
| Flood test | Whether the waterproofing holds before it is covered | Limits: for roofs with drains and wet areas before tiling |
| Moisture meter for ceilings and walls | Where water is entering now, from inside | Limits: measures the effect, not the water path |
| Roof, falls and drains survey | Ponding areas and the condition of the old layer | Limits: shows the condition, not the material alone |
The steps in order
- Checking the falls: Where water collects and where it should go.
- Details: Thresholds, drains and upstands.
- Waterproofing: The layer is applied and protected.
- Flood test: Tested before the finish goes on.
Facts and costs — Aljumum
| Item | Value | Source |
|---|---|---|
| District profile | The centre of Aljumum sits about 200 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| District profile | Team note on Aljumum: 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. | Kashf team |
| Bathroom waterproofing (per m²) | SAR 15–40 per m² | Owner price list (Aljumum) |
Short answers for Aljumum
What is the first step of floor & balcony waterproofing for residential buildings?
We start with checking the falls (where water collects and where it should go), then details (thresholds, drains and upstands).
How much does floor & balcony waterproofing cost in Aljumum?
From our published price list: Bathroom waterproofing (per m²) SAR 15–40 per m². Quantities are confirmed at the inspection.
What do I get at the end?
The flood result and photos of the details, in a technical report that carries a verification code.
Mistakes that cost more
- Tiling a balcony without waterproofing
What you receive
The written output: the flood result and photos of the details. The report is numbered and can be checked with its verification code.
If you live in Aljumum 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
- Kashf team
- Owner price list for Aljumum
- 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