Roof waterproofing for schools in Sharurah

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

Before we start: what we know about Sharurah

Team note on Sharurah: 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.. The centre of Sharurah sits about 724 m above sea level (SRTM open elevation data).

Main roads in or near Sharurah: King Abdulaziz Road, King Fahd Road.

Sharurah sits at about 724 m above sea level, according to SRTM open elevation data, and that height shapes how a school roof is checked before any work begins. At this elevation the sun is strong and the air is dry for much of the year, so the first things a technician looks at are the surface condition of the roof, the state of the parapets and drainage outlets, and any cracking that has opened up with heat and cooling. A roof that has been baking in the sun will show expansion joints and blisters in older coatings, and those are the points where water finds its way in once rain does arrive.

Some parts of the job can only be settled on the day, when the roof is open to view. The exact area to be treated, the number of metres of cracking to be injected, and whether the existing layer can take a new membrane or must be stripped back are all set during the site visit. The same goes for the choice between a liquid roof waterproofing system, a bitumen membrane, or insulation boards laid over the top, because each depends on the substrate and how the roof drains. Prices in the reference list vary widely: liquid roof waterproofing runs from SAR 8 to SAR 25 per m², a bitumen membrane from SAR 15 to SAR 35 per m², and XPS boards from SAR 12 to SAR 30 per m². The final figure will be fixed once the measurements are confirmed on site.

For the technician, it helps to arrive knowing the roof's access route, the position of any water tanks and whether their interiors have been coated, since tank internal coating is priced separately at SAR 25 to SAR 60 per m². Note where the school's occupied rooms sit beneath the roof, so that work can be scheduled outside teaching hours. Bring a crack injection kit for linear faults, which are charged at SAR 40 to SAR 120 per metre, and record every crack's length on arrival so the quote reflects what is actually there.

For schools, the larger jobs are planned for weekends and holidays.

Signs worth paying attention to

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

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

The most common causes

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

How we choose the tool in Sharurah

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 — Sharurah

Questions from Sharurah

Mistakes that cost more

• 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.