Roof waterproofing for restaurants in Aldawadmi

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

Roof waterproofing in Aldawadmi: the local context

Team note on Aldawadmi: 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.. Main roads in or near Aldawadmi: King Abdulaziz Road, Dawadmi Bujadiyah Road.

The centre of Aldawadmi sits about 976 m above sea level (SRTM open elevation data).

Before any material is chosen for a restaurant roof in Aldawadmi, the first thing a technician checks is the setting itself. The centre of Aldawadmi sits about 976 m above sea level, which means the roof is exposed to its own local conditions rather than those of the coast. Restaurant roofs also carry extra loads from kitchen extraction units, air-conditioning plant and foot traffic to service areas, so the surface is inspected for ponding, existing bitumen or liquid layers, and any previous patch work. Liquid roof waterproofing is priced at SAR 8–25 per m², bitumen membrane at SAR 15–35 per m², and XPS boards at SAR 12–30 per m², so the choice is shaped by the condition of the existing deck before cost is considered.

Several points are left to the site visit, because they depend on what is actually on the roof and cannot be judged from a description. The technician will look at the slope and drainage outlets, the state of the upstands and parapets, and any cracks that may need crack injection, which is charged at SAR 40–120 per metre. The age and thickness of existing layers, the position of plant and ducting, and whether the roof is used for storage or seating also affect the method. Where a rooftop tank or a shared wet area sits nearby, the technician will note whether tank internal coating at SAR 25–60 per m² or bathroom waterproofing at SAR 15–40 per m² is relevant to the same job. Spray foam, at SAR 20–45 per m², and epoxy coating, at SAR 35–90 per m², are also assessed here rather than assumed.

To help the technician prepare, the restaurant owner or manager should provide the roof plan or sketch, the approximate area in square metres, and any records of past repairs or leaks. It is useful to note where water has appeared inside the premises, and at what time of year, since this shows whether the problem is drainage, cracking or flashing. Access arrangements matter too: the times when the kitchen is quiet, where equipment can be moved, and whether the roof can be cleared of tables and signage. Details about the basement or under-floor areas, if they share a wall or drainage line with the roof, will also help. Clear information at this stage lets the technician plan the work around service hours and avoid surprises once the job begins.

For restaurants, visits are planned outside service hours and recorded for the premises file.

Signs that call for roof waterproofing

The following signs are worth checking before they grow:

• 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 — we check this before anything else.
• Wrong falls towards the drains — we check this before anything else.
• A common cause: damaged waterproofing around tank and AC bases.

Tools and methods, and when we use them

From the first visit to the report

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.

Facts and costs — Aldawadmi

Common questions about roof waterproofing in Aldawadmi

Common mistakes we see

• 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.