Roof waterproofing for hotels & serviced apartments in Jubail

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

What is specific about Jubail for roof waterproofing

Jubail is about 0.9 km from the sea coast (OpenStreetMap). The centre of Jubail sits about 4 m above sea level (SRTM open elevation data).

Team note on Jubail: 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..

Does a hotel or serviced apartment roof in Jubail really need specialist waterproofing, given how dry the desert air seems? The answer lies in the location itself. The centre of Jubail sits about 4 m above sea level, and the town is about 0.9 km from the sea coast. That closeness to the coast means roofs here face damp, salt-laden air and sharp temperature swings, so a roof that looks sound from below can still be letting water through its membrane or around its upstands. For a property where guests expect dry rooms and a clean lobby, waiting for a visible leak is an expensive way to find out.

A sound inspection starts with the roof surface and then works through the details. The survey should map cracks, blisters and ponding areas, and assess where water is actually entering the building. Where cracks are found, the cost of crack injection is typically SAR 40–120 per metre, which makes it a practical first step for localised defects. Surfaces are then matched to a suitable system: liquid roof waterproofing typically runs SAR 8–25 per m², bitumen membrane SAR 15–35 per m², spray foam SAR 20–45 per m², and XPS boards SAR 12–30 per m² for insulated decks. Rooftop water tanks, common on larger properties, can be assessed separately, with internal tank coating at SAR 25–60 per m². The inspector should record each area, quantity and recommended system so the owner receives a clear scope before any work is agreed.

Before the visit, gather the paperwork and access details that make the inspection quicker and more accurate. Provide the roof plan or building drawings if you have them, along with any previous waterproofing records, warranty documents and maintenance logs. Note the locations of recent leaks, stains on ceilings and any rooms that have been repainted, since these often point to the source. Arrange access to the roof, rooftop plant areas and tank room, and tell staff in occupied serviced apartments when the inspector will attend. Clearing loose debris from the roof beforehand also lets the surveyor see the surface properly, so your site visit gives you a clear picture of what the building needs.

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

Signs worth paying attention to

These are the signs most often linked to roof waterproofing:

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

Causes we see in the field

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

How we choose the tool in Jubail

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 — Jubail

Common questions about roof waterproofing in Jubail

What we advise against

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

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.