Roof waterproofing for duplexes in Tabuk

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

Why roof waterproofing differs in Tabuk

Team note on Tabuk: 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 Tabuk sits about 762 m above sea level (SRTM open elevation data).

Does a duplex roof in Tabuk really need waterproofing, given how dry the city is? The answer is yes, and the reason lies partly in the terrain. The centre of Tabuk sits about 762 m above sea level, a high-altitude setting where the roof takes the full force of sun and sudden rain alike. Heat cycles open small cracks in parapets and joints, and when rain does come, water finds those gaps quickly. For a duplex, where two households share one roof structure, a leak affects both floors, so the cost of waiting is higher than the cost of acting early.

Once you request a visit, the work begins with a roof inspection. The crew walks the full surface and checks parapets, drains, and the edges where the roof meets walls. They look for cracks, blistering, and areas where the existing layer has lifted or thinned. Where a crack is found, it is measured in metres, because crack injection is priced per metre, typically between SAR 40 and SAR 115 per m. The roof area itself is measured in square metres, which gives the basis for comparing options. Liquid roof waterproofing usually runs SAR 10–25 per m², bitumen membrane SAR 15–35 per m², and XPS boards SAR 10–30 per m². The inspector will explain which of these suits the condition of your slab rather than pushing one product.

Before the visit, gather a few things that make the inspection faster and the quote more accurate. Note any past leaks, including where the water appeared inside the duplex and after which kind of rain. Have the roof area in square metres ready if you know it, and mention whether any water tanks or rooftop fixtures sit on the roof, since tank internal coating is quoted separately at SAR 25–55 per m². Clear access to the roof hatch and the stairs will save time. Finally, let the crew know which floor is occupied and when, so the work can be scheduled around your household.

In a duplex, the two floors often share lines, so tests are done floor by floor.

Signs that call for roof waterproofing

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

Where the problem usually comes from

• 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.

Tools we use in Tabuk

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 — Tabuk

Common questions about roof waterproofing in Tabuk

What we advise against

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

The written outputs

You receive: a quality record with photos and the flood-test result, in a technical report with a verification code.