Roof waterproofing for clinics in Aldarb

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

Roof waterproofing in Aldarb: the local context

Aldarb is about 18.7 km from the sea coast (OpenStreetMap). The centre of Aldarb sits about 79 m above sea level (SRTM open elevation data).

Will a clinic roof in Aldarb really need waterproofing, given how far inland it sits? The centre of Aldarb sits about 79 m above sea level, and it is about 18.7 km from the sea coast, so the town is not on the shoreline. Still, a flat roof on a medical building takes sun, heat and rain year-round, and the choice of system matters for a building that must stay dry and hygienic. For clinic roofs, the common options on this page are liquid roof waterproofing at SAR 8–25 per m², bitumen membrane at SAR 15–35 per m², and XPS boards at SAR 12–30 per m². Each has a different cost profile, so the right one depends on the roof's condition and how it is used.

When we inspect a clinic roof, we start by walking the full surface to look for ponding, blistered or lifted membrane, cracked screeds and worn edges around parapets, drains and rooftop units. Where a crack runs through the structure, crack injection is priced at SAR 40–120 per metre, so the inspector measures each run and notes its length. Rooftop water tanks are checked too, since internal tank coating runs SAR 25–60 per m² and a leaking tank can be mistaken for a roof leak. The inspector also checks for moisture that has already reached the ceilings below, because those marks show where water has travelled and help place the repair correctly.

Before the visit, please gather the building's drawings and any previous waterproofing records, including the date and type of the last works. Tell us which rooms sit directly under the roof, especially treatment and sterilisation areas, so the inspector can plan access without disrupting patients. Clear the rooftop of loose equipment, note where you have seen leaks after rain, and let us know whether the roof is walked regularly. Keeping the access hatch and stairwell unlocked on the visit day saves time. With this information ready, the inspection can give you a clear, itemised quote you can compare before any work begins.

For clinics, work is scheduled around patient hours and kept to the areas that need it.

Signs that call for roof waterproofing

If you notice one of these signs in Aldarb, it is a good moment to talk to the team:

• The old waterproofing is cracking
• Water pooling on the roof
• Stains on the top-floor ceiling after rain

Causes we see in the field

• A common cause: cracks in the roof slab.
• A common cause: wrong falls towards the drains.
• Damaged waterproofing around tank and AC bases — we check this before anything else.

How we choose the tool in Aldarb

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.

Facts and costs — Aldarb

Questions from Aldarb

Mistakes that cost more

• 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.