Bitumen membrane in Yanbu: before summer & rain season

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

What is specific about Yanbu for bitumen membrane

The centre of Yanbu sits about 6 m above sea level (SRTM open elevation data). Yanbu is about 1.2 km from the sea coast (OpenStreetMap).

Team note on Yanbu: 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.. Main roads in or near Yanbu: King Abdulaziz Road, Umluj Road, Al Hanan Street.

Yanbu is a coastal city, and its centre sits about 6 m above sea level, with the sea coast roughly 1.2 km away. For bitumen membrane work, the first thing a technician checks is how the roof or slab drains and where water is likely to collect, because a city this close to the shore sees salt-laden air and sudden heavy rain that can find weak points quickly. Before summer heat softens the bitumen and before the rain season begins, it makes sense to look at the existing membrane surface for blistering, open laps, and any places where water has been pooling. The membrane price range for this type of work is SAR 15–35 per m², and the figure that matters most on site is the actual area that needs covering, so measuring the roof accurately is the starting point for any quote.

Some things can only be settled during the site visit. The technician needs to see the substrate condition, whether old membrane can stay in place or must be removed, the state of upstands and drains, and whether cracks need injection, which is priced at SAR 40–120 per metre. The choice of protection for different parts of the building is also decided on the ground. Rooftops may need liquid roof waterproofing at SAR 8–25 per m² in some areas, while a water tank, if present, may call for tank internal coating at SAR 25–60 per m². Insulation boards such as XPS, at SAR 12–30 per m², may be considered where thermal performance is part of the plan. None of these decisions should be made from a description alone.

To help the technician arrive prepared, it is useful to share the roof dimensions, the age of any existing waterproofing, and a note of where leaks have appeared after past storms. Photographs of the surface, taken in daylight, show details that are easy to miss in a short visit. Knowing whether the building sits on the lower or upper part of the city also helps the technician judge how water moves across the roof. Clear access to the roof and any water tanks saves time on the day. With this information in hand, the technician can plan the membrane work around the season and recommend a practical order of repairs before the rains arrive.

Checks before summer and before the rain season catch problems while they are still small.

Signs that call for bitumen membrane

These are the signs most often linked to bitumen membrane:

• A flat concrete roof that needs waterproofing
• Old rolls that are cracking

The most common causes

• No protection layer — we check this before anything else.
• A common cause: seams that were not welded properly.

Tools and methods, and when we use them

From the first visit to the report

1. Preparation: Cleaning, priming and repairs.
2. Torch welding: Overlaps are welded and checked.
3. Details: Upstands, drains and bases.
4. Protection and flood test: Protection is laid after a successful flood test.

Quick comparison: facts and costs in Yanbu

Short answers for Yanbu

What we advise against

• Leaving the membrane exposed without protection

The written outputs

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