Bitumen membrane in Alula: cost & published offers

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

Before we start: what we know about Alula

The centre of Alula sits about 697 m above sea level (SRTM open elevation data). Main roads in or near Alula: King Abdullah Road.

Alula sits at roughly 697 metres above sea level, which places it in a high desert setting where the air is typically dry and the sun is intense for much of the year. For a bitumen membrane job, that combination matters. Dry heat can dry out and harden the surface you are about to waterproof, so the crew has to check that the substrate is clean, sound and free of dust before any membrane goes on. Because the air is thin and dry, the surface can also cure differently from coastal sites, so the timing of each layer should follow what the material needs rather than a fixed calendar.

Each feature of the area therefore has a practical effect on the work. The elevation and dryness mean surfaces should be inspected for cracks and dust before any coating, since a clean, sound base is what lets a bitumen membrane bond properly. Basement waterproofing in the range of SAR 50–150 per m² is often where this preparation counts most, because the membrane has to meet the wall and floor cleanly. For smaller wet areas, bathroom waterproofing at SAR 15–40 per m² relies on the same principle of a dry, prepared surface. Crack injection, priced at SAR 40–120 per metre, is commonly carried out first, so that movement or hairline cracks are sealed before the membrane is laid over them.

Owners in the area can avoid several common mistakes. They should not skip surface preparation to save time, as an unprepared base is the most frequent cause of early failure. They should not compare prices only by the per-square-metre rate, because a low figure can hide thin application or poor edge detailing. They should ask for the membrane to be taken up properly at upstands and drains, and they should confirm which other works, such as XPS boards at SAR 12–30 per m² or liquid roof waterproofing at SAR 8–25 per m², are included in the quote. Clear written scope protects both the owner and the installer.

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

Signs worth paying attention to

The following signs are worth checking before they grow:

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

Causes we see in the field

• No protection layer.
• Seams that were not welded properly.

Tools we use in Alula

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.

Facts and costs — Alula

Questions from Alula

What we advise against

• Leaving the membrane exposed without protection

What you receive

The written output: photos of the welds and the flood-test result. The report is numbered and can be checked with its verification code.