Roof waterproofing in Jeddah: cost & published offers
In short: In Jeddah (Jeddah), roof waterproofing (cost & published offers) 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 Jeddah sits about 15 m above sea level (SRTM open elevation data). Published price: Liquid roof waterproofing (per m²), SAR 10–25 per m²; anything else is quoted after the inspection.
Before we start: what we know about Jeddah
Team note on Jeddah: 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 Jeddah sits about 15 m above sea level (SRTM open elevation data).
Jeddah is about 2 km from the sea coast (OpenStreetMap).
Roof waterproofing in Jeddah most often fails at the joints, parapets and drain outlets rather than across the open roof surface. Heat from the sun causes the roof to expand and contract daily, which opens small cracks around these edges. When the first rains arrive, water finds its way beneath the finish and starts to show as staining on ceilings below. Liquid roof waterproofing typically costs SAR 10–25 per m², and bitumen membrane SAR 15–35 per m², so a roof that is already leaking is usually a sign that the seams and edges need attention before the whole surface is recoated.
Jeddah's location shapes how the work should be approached. The city is about 2 km from the sea coast, so roofs and walls are exposed to humid, salt-laden air that can weaken surface coatings over time. The centre of Jeddah sits about 15 m above sea level, which means the ground is not especially low-lying, but heavy seasonal downpours can still pool on flat roofs and run quickly toward blocked outlets. A sound plan therefore checks the drainage slope and outlets as carefully as the membrane. Where a roof also covers a water tank or a sealed bathroom, the scope may include tank internal coating at SAR 25–65 per m² or bathroom waterproofing at SAR 15–40 per m², which should be priced separately rather than folded into the roof figure.
Before the visit, ask the provider to walk the roof with you and to state which areas will be covered, including the parapets, upstands and drain points. Ask which product will be used and what preparation the surface needs, because a coating applied over dust or loose old finish will not last. Request a written quote that lists each item with its unit price, so you can compare liquid roof waterproofing, membrane and crack injection (SAR 40–125 per metre) on an equal footing. Ask how long the work will take and whether the roof will be usable during it. Finally, confirm who will carry out any follow-up inspection after the first heavy rain, and get that commitment in writing before you agree to start.
Prices shown on this page come from our own published price list for the city; the final price is set after inspection.
Signs worth paying attention to
If you notice one of these signs in Jeddah, it is a good moment to talk to the team:
- The old waterproofing is cracking
- Stains on the top-floor ceiling after rain
- Water pooling on the roof
Where the problem usually comes from
- Cracks in the roof slab.
- Damaged waterproofing around tank and AC bases — we check this before anything else.
- Wrong falls towards the drains — we check this before anything else.
How we choose the tool in Jeddah
| Tool or method | What it measures | Why it is chosen here |
|---|---|---|
| Roof, falls and drains survey | Ponding areas and the condition of the old layer | Limits: shows the condition, not the material alone |
| Moisture meter for ceilings and walls | Where water is entering now, from inside | Limits: measures the effect, not the water path |
| Flood test | Whether the waterproofing holds before it is covered | Limits: for roofs with drains and wet areas before tiling |
How the work is done, step by step
- Survey: Falls, drains and the condition of the old layer are recorded.
- Preparation: Cleaning and repairs before any new layer.
- Primer: The base coat that the system needs.
- Waterproofing layers and details: Corners, upstands and bases get their own detail.
- Flood test: The roof is flooded and checked before it is covered.
Quick comparison: facts and costs in Jeddah
| Item | Value | Source |
|---|---|---|
| District profile | Team note on Jeddah: 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 |
| District profile | Jeddah is about 2 km from the sea coast (OpenStreetMap) | © OpenStreetMap contributors (ODbL) |
| District profile | The centre of Jeddah sits about 15 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| Liquid roof waterproofing (per m²) | SAR 10–25 per m² | Owner price list (Jeddah) |
| Bitumen membrane (per m²) | SAR 15–35 per m² | Owner price list (Jeddah) |
Questions from Jeddah
Can I use household chemicals instead of calling a technician?
Using unsuitable chemicals may corrode pipes and does not fix the root cause of the blockage, so it is better to rely on a specialist technician.
What is the difference between foam insulation and other types of insulation?
Foam insulation is easy to apply on uneven surfaces and forms one continuous layer with no joints, while other types, such as bitumen rolls, need the joints to be welded. The contractor decides which is most suitable after inspecting the site.
Can thermal insulation be applied to an existing building?
Yes, thermal insulation can be installed on the roofs and walls of existing buildings without the need for major structural modifications. The contractor prepares the surface, then applies the insulating material and the protective layer over it.
What is the first step of roof waterproofing (cost & published offers)?
We start with survey (falls, drains and the condition of the old layer are recorded), then preparation (cleaning and repairs before any new layer).
How much does roof waterproofing cost in Jeddah?
From our published price list: Liquid roof waterproofing (per m²) SAR 10–25 per m²; Bitumen membrane (per m²) SAR 15–35 per m². Quantities are confirmed at the inspection.
What do I get at the end?
A quality record with photos and the flood-test result, in a technical report that carries a verification code.
Common mistakes we see
- Covering the waterproofing before the flood test
- Ignoring the tank bases
What you get after the work
The written output: a quality record with photos and the flood-test result. The report is numbered and can be checked with its verification code.
Planning the visit in Jeddah
- You can message us on WhatsApp in English; the booking details are sent back to you in the chat to confirm before the visit.
- The Saudi weekend is Friday and Saturday; mention your preferred day and time when booking.
- 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
- © OpenStreetMap contributors (ODbL)
- Kashf team
- Customer questions (reviewed)
- Owner price list for Jeddah
- 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