Roof waterproofing in Zhra Lbn, Riyadh: cost & published offers
In short: In Zhra Lbn (Riyadh), 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 nearest wadi channel is about 1.8 km from the centre of Zhra Lbn (OpenStreetMap). 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 Zhra Lbn
The centre of Zhra Lbn is at 24.6329, 46.5531, about 15.3 km from the centre of Riyadh, with an approximate radius of 8 km. The service-area circle on the map below is drawn from this point. Main roads in or near Zhra Lbn: Western Ring Road, Najd Road, Taif.
The nearest wadi channel is about 1.8 km from the centre of Zhra Lbn (OpenStreetMap). The centre of Zhra Lbn sits about 747 m above sea level (SRTM open elevation data).
Is roof waterproofing in Zhra Lbn, Riyadh, a job you can price in advance? Yes, because published rates exist for the main methods, and the ranges below give owners a starting point. Zhra Lbn is centred at 24.6329, 46.5531, about 15.3 km from the centre of Riyadh, within an approximate radius of 8 km. The centre sits about 747 m above sea level, and the nearest wadi channel lies about 1.8 km away, which is worth knowing when you judge how exposed your roof is to heavy runoff. For a roof, the most relevant published rate is liquid roof waterproofing at SAR 10–25 per m², while a bitumen membrane runs SAR 15–35 per m² and spray foam SAR 20–45 per m². Crack injection is priced per metre at SAR 40–125 per m, so a roof with a few open cracks may cost less to repair than to recoat entirely.
A proper inspection starts with a walk across the full roof surface to look for ponding, blistered finishes, lifted edges and cracks along parapets and drain outlets. The inspector should check where water collects after rain and whether drains and outlets are clear and set at the right level. Next, the surface is checked for dampness at the underside, usually from the top floor ceiling, to confirm where water is actually entering. Where needed, the inspector measures the roof area in square metres so that the quote can be built from the per-m² rates. Cracks are marked and measured in metres so that injection work can be priced separately from the general coating. The result should be a written note of the affected zones, the recommended method for each zone and the area or length used in the calculation.
Before the visit, gather any earlier waterproofing records, invoices or warranty papers, and note when leaks first appeared and whether they follow rainfall. Clear loose debris, furniture and stored items from the roof and top-floor rooms so the inspector can work without delay. Note the roof's access route and any locked hatches or rooftop tanks, since tank internal coating is priced separately at SAR 25–65 per m² and should be assessed at the same time if it applies. Have a rough idea of your roof's dimensions, and if you have a plan, keep it ready. With these details in hand, the inspection can move straight to measuring and pricing, and you can compare the published ranges against a written quote before you commit.
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
These are the signs most often linked to roof waterproofing:
- The old waterproofing is cracking
- Water pooling on the roof
- Stains on the top-floor ceiling after rain
Where the problem usually comes from
- A common cause: cracks in the roof slab.
- Wrong falls towards the drains.
- Damaged waterproofing around tank and AC bases — we check this before anything else.
Tools and methods, and when we use them
| 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 |
| Roof, falls and drains survey | Ponding areas and the condition of the old layer | Limits: shows the condition, not the material alone |
| 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.
Facts and costs — Zhra Lbn
| Item | Value | Source |
|---|---|---|
| Roads | Main roads in or near Zhra Lbn: Western Ring Road, Najd Road, Taif | Kashf data (owner) |
| District profile | The nearest wadi channel is about 1.8 km from the centre of Zhra Lbn (OpenStreetMap) | © OpenStreetMap contributors (ODbL) |
| Centre of Zhra Lbn | 24.63290, 46.55307 | © OSM |
| Distance from the centre of Riyadh | about 15.3 km | Calculated from the coordinates |
| District profile | The centre of Zhra Lbn sits about 747 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 (Riyadh) |
| Bitumen membrane (per m²) | SAR 15–35 per m² | Owner price list (Riyadh) |
Common questions about roof waterproofing in Zhra Lbn
Is Zhra Lbn within our service area in Riyadh?
The centre of Zhra Lbn is at 24.6329, 46.5531, about 15.3 km from the centre of Riyadh. The exact address of your property is set when you book.
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 Zhra Lbn?
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.
What we advise against
- Ignoring the tank bases
- Covering the waterproofing before the flood test
The written outputs
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 Zhra Lbn
- The Saudi weekend is Friday and Saturday; mention your preferred day and time when booking.
- You can message us on WhatsApp in English; the booking details are sent back to you in the chat to confirm before the visit.
- 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.
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