Roof waterproofing in Al Wzarat, Riyadh: with a verifiable technical report

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

What is specific about Al Wzarat for roof waterproofing

The centre of Al Wzarat is at 24.6769, 46.7135, about 5.6 km from the centre of Riyadh, with an approximate radius of 1.6 km. The approximate area shown on the map is centred here. Main roads in or near Al Wzarat: Makkah Road, King Saud Road, Prince Abdulaziz bin Musaed bin Jalawi Road.

The centre of Al Wzarat sits about 602 m above sea level (SRTM open elevation data).

Roof leaks in Al Wzarat most often start at the joints and upstands rather than across open roof areas. Where the membrane meets parapets, drainage outlets and rooftop fixtures, small gaps open up over time, and water then tracks into ceilings and the top floor before anyone sees a stain. Liquid roof waterproofing, typically priced at SAR 10–25 per m², is a common choice for flat roofs because it can be applied seamlessly over the existing surface, but it only performs well if those edges and corners are sealed first. A bitumen membrane, at SAR 15–35 per m², offers a more traditional layered barrier that suits roofs with heavier exposure.

Al Wzarat sits at roughly 602 m above sea level, with its centre at 24.6769, 46.7135, about 5.6 km from the centre of Riyadh, and it covers an approximate radius of 1.6 km. That location means that roofs here are exposed to strong sun for long periods, and the constant heat cycling in summer is hard on any membrane. The approach should therefore favour coatings and membranes that tolerate expansion and contraction, with particular attention to upstands where the movement is greatest. Because the area is within a defined radius around a single centre, many buildings share similar construction styles, so a careful check of the existing roof layers often tells a technician more than a general assessment would.

Before the visit, ask the provider which products they plan to use and why they suit a flat roof at this elevation and exposure, and ask how they will treat the edges, parapets and outlets rather than only the open areas. Request a clear written scope that states the roof area being measured and the rate per m² that applies, so you can compare it directly with the ranges above. Ask whether they will remove loose or blistered material before applying new layers, and what they will do if a crack or split is found during preparation. Clear answers on these points make it much easier to judge whether the proposed work will hold up in Al Wzarat's conditions.

Each job ends with a written report that carries a verification code you can check on our site.

Signs that call for roof waterproofing

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

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

Causes we see in the field

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

Tools we use in Al Wzarat

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 Al Wzarat

Short answers for Al Wzarat

What we advise against

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

The written outputs

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