Roof waterproofing in Tabarjal: before summer & rain season

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

Before we start: what we know about Tabarjal

The centre of Tabarjal sits about 548 m above sea level (SRTM open elevation data). Team note on Tabarjal: 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..

Will my roof leak once the summer heat and the rainy season arrive? That is the question most property owners in Tabarjal ask as the year turns, and the answer depends on the condition of the roof, the materials used, and how early the work is planned. Tabarjal's centre sits about 548 m above sea level (SRTM open elevation data), so it is worth checking the roof before the wet months arrive rather than after the first storm. For a roof, liquid roof waterproofing is typically priced at SAR 8–25 per m², while a bitumen membrane falls within SAR 15–35 per m², and XPS boards within SAR 12–30 per m². Pricing alone should not decide the system, since the right choice depends on the roof's surface and how much movement it sees.

A proper inspection starts with a visual walk of the entire roof, looking for ponding areas, lifted edges, cracked screed and failed sealant around parapets, drains and roof penetrations. Any crack should be measured and recorded, because crack injection is priced per metre at SAR 40–120 per m, and the length found determines the scope. The surveyor will also check the drainage outlets to confirm water runs off rather than collecting, and note whether earlier coatings are peeling or blistering. Where the roof connects to other areas, such as a bathroom above a living space, the same checks apply, since bathroom waterproofing is priced at SAR 15–40 per m² and leaks often start there. The findings are then turned into a written scope with measured areas, so you can compare options on equal terms.

Before the visit, clear the roof of loose items, planters, and stored materials so the surface can be inspected fully and access is safe. Gather any previous waterproofing invoices, warranties, or details of past repairs, since these show what has already been applied. Note the dates of any leaks you have seen, including where water appeared inside the building and after which kind of rain. If you have a water tank on the roof, make sure it can be reached, because tank internal coating is priced at SAR 25–60 per m² and is often assessed at the same visit. Having these details ready lets the inspection focus on the real problem areas and gives you a clear basis for deciding before the summer heat and rain season begin.

Checks before summer and before the rain season catch problems while they are still small.

Signs that call for roof waterproofing

The following signs are worth checking before they grow:

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

Where the problem usually comes from

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

Tools we use in Tabarjal

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 — Tabarjal

Questions from Tabarjal

What we advise against

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

The written outputs

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.