Roof waterproofing for apartments in Alnuayriyah

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

What is specific about Alnuayriyah for roof waterproofing

The centre of Alnuayriyah sits about 49 m above sea level (SRTM open elevation data). Main roads in or near Alnuayriyah: King Abdulaziz Road.

Team note on Alnuayriyah: 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 Alnuayriyah sits about 49 m above sea level, according to SRTM open elevation data. For roof work, this means the neighbourhood is not a low-lying flood basin, but rainwater still needs a clear route off every roof. Our crews therefore check the fall of each roof surface before quoting, so that water runs toward the outlets rather than pooling against the parapet or the upstand of the membrane.

Because the area is mostly apartment buildings with shared roofs, one roof often covers several households, and a leak can travel down through several floors. Our approach is to treat the whole roof as one system. We look at drainage outlets, expansion joints and the junction with roof-top water tanks as well as the open field of the roof. Liquid roof waterproofing is priced from SAR 8–25 per m², bitumen membrane from SAR 15–35 per m², and XPS boards from SAR 12–30 per m², so owners can compare options for their own roof area. Where a roof has cracks, crack injection is charged at SAR 40–120 per metre, which is often a sensible first step before a full coating is applied.

Owners in this area commonly make a few avoidable mistakes. The first is covering a damp or dusty surface, which stops the new layer from bonding and lets water creep underneath. The second is ignoring the tank and its base, where the same water-holding problem can appear inside the tank itself, where tank internal coating runs from SAR 25–60 per m². The third is treating a small leak as cosmetic and postponing repair until the ceiling below is stained. Checking the roof once a year, after the heaviest rain, and asking for a written scope of work that lists each surface and each junction will prevent most of these problems before they start.

In an apartment, a problem may start in your unit or in a shared line; we separate the two before any work.

When do you need roof waterproofing?

If you notice one of these signs in Alnuayriyah, it is a good moment to talk to the team:

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

The most common causes

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

Tools we use in Alnuayriyah

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.

Alnuayriyah in facts and sources

Common questions about roof waterproofing in Alnuayriyah

Common mistakes we see

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

What you receive

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.