Bitumen membrane for clinics in Khafji

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

Why bitumen membrane differs in Khafji

The centre of Khafji sits about 9 m above sea level (SRTM open elevation data). Khafji is about 2 km from the sea coast (OpenStreetMap).

Team note on Khafji: 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.. Main roads in or near Khafji: King Abdullah Road.

Before any membrane is quoted for a clinic in Khafji, the technician first looks at where the building sits, because that shapes how water and moisture reach the roof and walls. The centre of Khafji sits about 9 m above sea level (SRTM open elevation data), and the town is about 2 km from the sea coast (OpenStreetMap). That combination means the site is close enough to the coast for salt-laden air to matter, yet high enough that standing water is less likely to collect at ground level. These two facts are the starting point for deciding how the roof and any exposed surfaces should be prepared, and they are checked before anything else on the list.

Several points are left to the site visit, because they cannot be judged from a distance. The technician needs to examine the existing roof deck for cracks, blisters, ponding areas, and old coatings that may have failed. Drainage outlets, parapets, and the junctions where the roof meets walls and plant equipment all need to be checked in person, since leaks most often start at these details. The condition of any previous waterproofing layer, and whether it can be left in place or must be stripped, is also judged on the spot. Access to the roof, the presence of medical equipment or pipework that must be protected, and the hours when work can be carried out without disturbing patients are noted during the visit as well.

For the technician, the practical points are as follows. Bitumen membrane for a flat roof in this area is usually priced in the range of SAR 15–35 per m², and the final figure depends on surface preparation, detailing around penetrations, and the number of layers required. Liquid roof waterproofing, at SAR 8–25 per m², is sometimes considered as an alternative for simpler roofs, while XPS boards at SAR 12–30 per m² can be relevant where insulation is also needed. Bathroom and wet-room work inside the clinic is priced separately at SAR 15–40 per m², so these areas should be measured apart from the roof. Recording the exact square metreage, the drainage details, and any crack lengths will allow a clear estimate to be prepared after the visit.

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

When do you need bitumen membrane?

These are the signs most often linked to bitumen membrane:

• A flat concrete roof that needs waterproofing
• Old rolls that are cracking

The most common causes

• No protection layer.
• Seams that were not welded properly.

Tools and methods, and when we use them

From the first visit to the report

1. Preparation: Cleaning, priming and repairs.
2. Torch welding: Overlaps are welded and checked.
3. Details: Upstands, drains and bases.
4. Protection and flood test: Protection is laid after a successful flood test.

Khafji in facts and sources

Short answers for Khafji

What we advise against

• Leaving the membrane exposed without protection

What you receive

The written output: photos of the welds and the flood-test result. The report is numbered and can be checked with its verification code.