Roof waterproofing for warehouses in Al Wrwd, Riyadh

Prepared by the technical team · editorial review · last updated 13 November 2026 · Sources

Roof waterproofing in Al Wrwd: the local context

The centre of Al Wrwd is at 24.7244, 46.6785, about 1.2 km from the centre of Riyadh, with an approximate radius of 2 km. The approximate area shown on the map is centred here. Main roads in or near Al Wrwd: King Fahd Road, Olaya Street, Al Urubah Road.

The centre of Al Wrwd sits about 631 m above sea level (SRTM open elevation data).

Al Wrwd sits at 24.7244, 46.6785, about 1.2 km from the centre of Riyadh, with an approximate radius of 2 km, and its centre lies about 631 m above sea level. For a warehouse roof here, the technician first checks the roof's exposure to direct sun and heat, since the area's position inside the Riyadh basin means long hot days and strong radiation on flat surfaces. The choice of system depends on what the roof must withstand, so the first question is whether the surface needs a liquid roof waterproofing layer, which is priced at SAR 10–25 per m², or a bitumen membrane at SAR 15–35 per m². Insulation is also weighed early, and XPS boards at SAR 15–30 per m² are considered where the roof must hold heat or cold levels steady inside the building.

The rest is left to the site visit, because it depends on conditions no description can settle. The technician looks at the actual condition of the roof deck, any ponding or drainage faults, the age and state of existing layers, parapets, roof penetrations, and the points where the roof meets walls or drains. Cracks are inspected in person; crack injection is priced at SAR 40–125 per metre and is only chosen once the extent is known. Where a warehouse has water storage on the roof, the tank internal coating at SAR 25–65 per m² is assessed separately, and spray foam at SAR 20–45 per m² is considered only if the substrate suits it. Epoxy coating at SAR 35–95 per m² is also a site decision rather than a default.

To help the technician, it is useful to have the roof's dimensions and area ready, a record of previous repairs or leaks, the building's use and any loads placed on the roof, and access arrangements for the work period. Photos of the current roof surface, especially after rain, help show where water collects. Note also any work already done on basement or tank areas, since the same contractor may need to coordinate. With these details to hand, the visit can move quickly from inspection to a clear recommendation for the roof at this site in Al Wrwd.

For warehouses, work is phased around operations and stored goods.

Signs that call for roof waterproofing

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

• Cracks in the roof slab.
• Wrong falls towards the drains.
• A common cause: damaged waterproofing around tank and AC bases.

Tools we use in Al Wrwd

How the work is done, step by step

1. Survey: Falls, drains and the condition of the old layer are recorded.
2. Preparation: Cleaning and repairs before any new layer.
3. Primer: The base coat that the system needs.
4. Waterproofing layers and details: Corners, upstands and bases get their own detail.
5. Flood test: The roof is flooded and checked before it is covered.

Quick comparison: facts and costs in Al Wrwd

Short answers for Al Wrwd

Mistakes that cost more

• Ignoring the tank bases
• Covering the waterproofing before the flood test

What you receive

You receive: a quality record with photos and the flood-test result, in a technical report with a verification code.