Roof waterproofing in Aldawadmi: for companies (annual contract)

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

Before we start: what we know about Aldawadmi

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

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

Roof waterproofing in Aldawadmi starts with the elevation. The centre of Aldawadmi sits about 976 m above sea level (SRTM open elevation data), so the technician first looks at how water and sun will load the roof in a high, dry setting. Rain tends to arrive in short, heavy bursts, and strong sun can make the roof surface expand and contract daily. For this reason the first check is the state of the existing surface and whether it has blistered, lifted or cracked. Each area is measured per square metre, and the price range for liquid roof waterproofing is SAR 8–25 per m², while bitumen membrane is SAR 15–35 per m². These ranges help a company compare options before the visit, but the final method is chosen on site.

The site visit decides the details that cannot be judged from a distance. The technician walks the roof to find ponding areas, outlet and drain condition, parapet junctions and any cracks that need injection, which is priced at SAR 40–120 per metre. They check whether the roof can take a membrane or whether a liquid coating suits its shape better, and whether insulation boards such as XPS, at SAR 12–30 per m², are needed under the finish. Access routes, safe working zones and any rooftop equipment that must stay in service are also confirmed on the day. Anything that affects cost or timing is noted, and the company receives a clear written scope to approve before work begins.

To help the technician, the company should share the roof plan or building drawings, the age of the existing waterproofing, any history of leaks and the rooms below that were affected. Photographs of problem areas taken after rain are very useful, as are notes on which parts of the roof are used for storage, plant or foot traffic. Tell the team if water tanks sit on the roof, since tank internal coating is priced separately at SAR 25–60 per m² and must be scheduled. Clear access times and a named contact on site make the visit faster. With this information ready, the annual contract can be planned around the building's actual needs in Aldawadmi.

For companies, an annual contract sets the scope, the visit schedule and the reports in writing.

Signs that call for roof waterproofing

If you notice one of these signs in Aldawadmi, 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.
• A common cause: damaged waterproofing around tank and AC bases.
• Wrong falls towards the drains.

Tools we use in Aldawadmi

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.

Facts and costs — Aldawadmi

Common questions about roof waterproofing in Aldawadmi

What we advise against

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

What you receive

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.