Roof waterproofing in Qatif: for companies (annual contract)

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

Roof waterproofing in Qatif: the local context

The centre of Qatif sits about 5 m above sea level (SRTM open elevation data). Qatif is about 2.5 km from the sea coast (OpenStreetMap).

Team note on Qatif: 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..

Picture the operator of a small office block or warehouse in Qatif who has signed a lease for the building and wants the roof to stay dry all year without managing repairs one emergency at a time. Staff are working under the roof, stock or equipment sits below it, and every leak means a lost day. For this owner, the sensible question is not which product is cheapest on the day, but how the roof will be kept sealed over the coming years under a single agreement.

Qatif's location shapes that decision. The centre of the town sits about 5 m above sea level, which means rainwater and groundwater do not drain away quickly on flat ground, so water can linger on roof surfaces and in low spots. The town is also about 2.5 km from the sea coast, so the air carries salt and moisture that wear down exposed sealants and membranes faster than inland sites. A roof here needs a waterproofing system that tolerates standing water and salty air, and it needs regular inspection so small defects are caught before they spread.

For a company, the practical path starts with a full roof survey to record cracks, blisters, drainage outlets and any old membrane that has lifted. Next, agree the scope with the contractor: 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 right choice depends on the roof's condition and how much foot traffic it carries. Any cracks found should be sealed by crack injection, priced at SAR 40–120 per metre. Then set the annual contract so that inspections, repairs and recoating are scheduled in advance, with clear terms for emergency call-outs. Finally, keep a written log of each inspection so the company can track the roof's condition from year to year.

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

Signs worth paying attention to

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

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

Causes we see in the field

• A common cause: damaged waterproofing around tank and AC bases.
• Wrong falls towards the drains.
• A common cause: cracks in the roof slab.

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 — Qatif

Questions from Qatif

Common mistakes we see

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

What you get after the work

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.