Roof waterproofing in Alrass: cost & published offers

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

Before we start: what we know about Alrass

Team note on Alrass: 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 Alrass sits about 695 m above sea level (SRTM open elevation data).

Main roads in or near Alrass: King Abdulaziz Road, King Fahd Road, King Salman Road.

Is roof waterproofing in Alrass expensive, and what will it actually cost? The centre of Alrass sits about 695 m above sea level, and that elevation is one reason owners here should compare published rates carefully before they commit to any work. For roofs, the published range for liquid roof waterproofing is SAR 8–25 per m², while bitumen membrane is listed at SAR 15–35 per m² and XPS boards at SAR 12–30 per m². These figures give a clear starting point, so you can see which system fits your roof area and budget before any visit is booked.

The visit itself should begin with a walk across the whole roof surface to look for ponding, cracks, blistered coatings and areas where old sealant has lifted. The technician should then check the parapets, drainage outlets and the junctions where the roof meets walls, because leaks often start at these edges rather than in the open field. Any crack that needs sealing is priced separately, with crack injection listed at SAR 40–120 per metre, so measuring visible cracks during the inspection helps you understand the likely scope. The inspection also records the condition of the existing surface, which decides whether a new layer can be laid directly or whether the old one must first be cleaned or removed.

Before the visit, gather the details that make the quote accurate. Measure the roof area in square metres, note the roof type, and write down where you have seen water entering the building, including the date and the room affected. Keep any previous waterproofing invoices or warranty papers, since they show what was applied before. Clear access to the roof, stairwell and any water tanks, and mention whether the roof is used for storage or a rooftop unit, as this affects how the work is planned. With these details ready, the published rates can be turned into a realistic estimate for your property.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

When do you need roof waterproofing?

If you notice one of these signs in Alrass, 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

Causes we see in the field

• 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 we use in Alrass

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.

Quick comparison: facts and costs in Alrass

Short answers for Alrass

Mistakes that cost more

• 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.