Roof waterproofing for hotels & serviced apartments in Ahad Almasarihah

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

Before we start: what we know about Ahad Almasarihah

The centre of Ahad Almasarihah sits about 667 m above sea level (SRTM open elevation data). Team note on Ahad Almasarihah: 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..

Ahad Almasarihah sits in the hills of Jazan Province, and its town centre lies about 667 m above sea level. That height matters for roofs. Ground at this elevation can see cooler nights and wider day-to-night temperature swings than the coastal plain, and roof surfaces expand and contract with those changes. For hotels and serviced apartments, this means the roof membrane is working hard through the year, so the choice of system and its installation need to suit a site that is not flat, sea-level terrain.

Because the centre is elevated, we match each roof to its exposure. Liquid roof waterproofing, priced at SAR 8–25 per m², is a common choice for large, open roof areas, while bitumen membrane, at SAR 15–35 per m², suits roofs that need a thicker, more traditional barrier. Where a roof holds water or sits under a tank, we consider tank internal coating at SAR 25–60 per m², and where the roof needs added thermal comfort for guest rooms below, XPS boards at SAR 12–30 per m² can be fitted beneath the waterproofing layer. Each option is quoted per square metre so owners can compare the work on their own roof area before any decision is made.

Owners in this area often avoid the same few mistakes. The first is choosing a system only on price, without checking how it will handle the temperature swings typical of the higher ground. The second is leaving small cracks unrepaired; crack injection, at SAR 40–120 per metre, is far cheaper than repairing water damage inside occupied rooms. The third is coating over a surface that has not been cleaned and dried, which lets the new layer peel early. Finally, many owners delay roof checks until a leak appears in a guest room. Planning inspections before the rainy months protects guests, reputation and the building itself.

For hotels and serviced apartments, rooms are handled in batches to keep units available.

Signs that call for roof waterproofing

If you notice one of these signs in Ahad Almasarihah, 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

Where the problem usually comes from

• 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 — we check this before anything else.

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.

Ahad Almasarihah in facts and sources

Short answers for Ahad Almasarihah

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.