Roof waterproofing for clinics in Arar

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

Before we start: what we know about Arar

The centre of Arar sits about 553 m above sea level (SRTM open elevation data).

Roof waterproofing work for clinics in Arar starts with the roof itself, because the area's climate is hard on surfaces. The centre of Arar sits about 553 m above sea level, which means the technician should expect strong sun, wide temperature swings between day and night, and dust carried on the wind. Before any product is chosen, the first checks are the condition of the existing membrane, the presence of blistering or lifted edges, and any cracks in the screed or parapet joints. Clinics also need the work scheduled so that sterile rooms and waiting areas are not exposed to dust or fumes, so access routes and timing are confirmed at this stage.

Several points are left to the site visit, since they depend on what is physically found on the roof. These include the slope and drainage of the roof, the type of substrate beneath the old covering, whether the roof carries plant, air-conditioning units or water tanks, and how far the leak has travelled into the rooms below. The technician will also check where rainwater ponds, how the outlets and gutters perform, and whether any penetrations such as pipes or vents need separate sealing. Prices for liquid roof waterproofing usually fall between SAR 8 and SAR 25 per m², while bitumen membrane sits between SAR 15 and SAR 35 per m², and XPS boards between SAR 12 and SAR 30 per m². The final system depends on these site findings rather than on the price alone.

To help the technician prepare, the following information is useful. Note the approximate roof area in square metres, the number of drainage points, and any sections where water has previously entered the clinic. Record whether the roof is accessible for vehicles or only by stairs, and whether the clinic can close certain rooms during the work. Where cracks run through the structure, a crack injection quote is priced per metre, typically SAR 40 to SAR 120 per m, so measuring their total length in advance helps. Photographs of the roof surface and the ceilings below, taken after the last rain, give the clearest picture of where water is actually getting in.

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

Signs that call for roof waterproofing

The following signs are worth checking before they grow:

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

The most common causes

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

Tools we use in Arar

The steps in order

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.

Arar in facts and sources

Questions from Arar

What we advise against

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

What you get after the work

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