Roof waterproofing for residential buildings in Sharurah

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

Why roof waterproofing differs in Sharurah

The centre of Sharurah sits about 724 m above sea level (SRTM open elevation data). Main roads in or near Sharurah: King Abdulaziz Road, King Fahd Road.

Team note on Sharurah: 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 flat roof in Sharurah really need waterproofing, and what will it cost? The centre of Sharurah sits about 724 m above sea level, a setting where the roof takes the full force of sun and seasonal rain, so a roof that looks sound can still let water in through hairline gaps. For a typical residential flat roof, liquid roof waterproofing usually falls in the range of SAR 8–25 per m², while a bitumen membrane runs SAR 15–35 per m². Insulating boards made from XPS add SAR 12–30 per m² where thermal protection is also wanted. These ranges give an owner a clear starting point before any work begins, and the final figure depends on the roof's size and condition.

The inspection starts with a walk across the full roof surface to look for cracks, lifted edges, blistered coatings and ponding areas where water sits after rain. The inspector then checks the junctions with parapets, drainage outlets and rooftop fixtures, since these are the points where leaks most often begin. Where a crack is found, crack injection is quoted separately at SAR 40–120 per metre, so the length of each defect is measured on site. Any water staining on the ceilings below is noted and traced back to the likely entry point. At the end of the visit, the owner receives a written account of what was found, which areas need treatment, and the rate range that applies to each.

Before the visit, clear the roof of loose debris, plant pots and stored items so the full surface can be seen and measured. Note any past leaks, the dates they happened and the rooms affected, because this history helps narrow down the problem quickly. If the building has a rooftop water tank, mention it in advance, since tank internal coating is priced separately at SAR 25–60 per m². Have access arranged for the roof and the rooms below, and keep the building's key documents close at hand. A well-prepared property owner makes the inspection faster and the resulting quote easier to compare.

For a whole building, a survey of the shared systems comes before unit-by-unit work.

Signs that call for roof waterproofing

These are the signs most often linked to roof waterproofing:

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

Causes we see in the field

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

How we choose the tool in Sharurah

The steps in order

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 — Sharurah

Short answers for Sharurah

Common mistakes we see

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

What you get after the work

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