Bitumen membrane for offices & commercial complexes in Afif

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

Before we start: what we know about Afif

Team note on Afif: 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 Afif sits about 1040 m above sea level (SRTM open elevation data).

Main roads in or near Afif: King Abdulaziz Road, King Faisal Road, Airport Road.

An office owner in Afif often manages a multi-storey commercial complex with a flat roof, a shared basement or parking level, and tenants who expect uninterrupted use of their space. A leak that starts in one corner can quickly affect several floors, disrupt staff, and damage stock or equipment. For this kind of building, the roof and basement are usually the two areas where water entry matters most, and planning the repair before the rainy season arrives is far easier than responding to an emergency.

Afif's centre sits about 1040 metres above sea level, which places it on the higher ground of the region. For a building owner, altitude matters because it shapes the local climate and the way water moves over exposed surfaces. A flat roof on a commercial building collects rainfall and must shed it quickly, so any weakness in the waterproofing layer is exposed to standing water. Owners should therefore treat roof and basement protection as a planned maintenance item rather than an optional extra. Bitumen membrane, priced at SAR 15–35 per m², is one of the most common options for large flat roof areas, and it can be compared against liquid roof waterproofing at SAR 8–25 per m² when budgets or access constraints differ.

Practical steps help keep the work organised. First, survey the roof and basement and mark every area showing ponding, cracks, blistering or damp patches. Second, treat cracks before the main membrane is laid, since crack injection is priced per metre at SAR 40–120 per m and must be completed first. Third, decide on the surface system by comparing the membrane and liquid options against the roof layout and the needs of the tenants below. Fourth, schedule the work in a dry period and arrange for tenants or staff to be informed in advance. Finally, record the completed areas and inspect them after the first heavy rain so any issue is caught early.

For offices and commercial complexes, work is scheduled to avoid disrupting staff and visitors.

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

The most common causes

• No protection layer — we check this before anything else.
• 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.

Afif in facts and sources

Short answers for Afif

Common mistakes we see

• 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.