Roof waterproofing in Alzulfi: cost & published offers

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

Roof waterproofing in Alzulfi: the local context

Team note on Alzulfi: 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 Alzulfi sits about 615 m above sea level (SRTM open elevation data).

Main roads in or near Alzulfi: King Fahd Road, Sheikh Ibn Baz Square, King Salman Road.

How much does roof waterproofing cost in Alzulfi, and what do the published offers cover? For liquid roof waterproofing, the published range is SAR 8–25 per m², while a bitumen membrane is listed at SAR 15–35 per m² and XPS boards at SAR 12–30 per m². Spray foam sits at SAR 20–45 per m² and epoxy coating at SAR 35–90 per m². These figures give a starting point for comparing options, but the final cost depends on the roof's area and condition. Alzulfi itself sits at a notable height, with the centre about 615 m above sea level (SRTM open elevation data), so the altitude is part of the local context when you read the offers.

When a technician visits, the inspection usually begins with the roof surface itself, looking for cracks, ponding areas, and failed old coatings. Where cracks are visible, crack injection is priced separately at SAR 40–120 per metre, so the inspector will measure their length and note their location. The team then checks related areas such as parapets, drainage outlets, and any roof-level water tanks, since tank internal coating is priced at SAR 25–60 per m² and may be needed if the tank is part of the problem. The inspection results determine which material is suitable for each section, so one roof may combine more than one system.

Before the visit, gather a few basic details that help the technician give a clear quote. Note the approximate roof area in square metres, and if you have a sketch or measurements, keep them ready. Record any past leaks, when they appeared, and which rooms or ceilings were affected, since this helps locate the source. If a previous waterproofing layer was applied, find out what material it was. Clear access to the roof and any tank or stairwell is also useful, so the inspection can be completed in one trip.

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?

The following signs are worth checking before they grow:

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

The most common causes

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

Tools we use in Alzulfi

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 — Alzulfi

Questions from Alzulfi

What we advise against

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

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.