Bitumen membrane for schools in Afif

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

What is specific about Afif for bitumen membrane

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.

The centre of Afif sits about 1040 m above sea level, which is a useful starting point for any bitumen membrane job on a school roof in this town. Height above sea level shapes the local climate, with cooler nights and strong daytime heat that together stress roof surfaces and their joints. Before any quotation is finalised, the technician checks the existing roof substrate, the condition of parapets and upstands, and the drainage outlets, since water that stands on a flat school roof is the most common cause of early membrane failure. The rate for bitumen membrane is SAR 15–35 per m², so the area measured on site is the figure that drives the overall cost, and an accurate measurement at this first stage prevents surprises later.

Several things are left to the site visit itself and cannot be settled from a description alone. The technician needs to see the actual condition of the roof deck, locate any cracks or blisters, confirm whether the existing membrane can be overlaid or must be removed, and check how the roof edges and drain points are finished. Access arrangements matter too, because a working school must keep its classrooms safe and its routines undisturbed, so timing of noisy or hot-works activity is agreed on the day. Where the roof meets walls, or where cracks run through the structure, crack injection at SAR 40–120 per metre may be needed alongside the membrane, and the length can only be confirmed by walking the surface.

Information that helps the technician prepare well includes a rough plan of the building with roof areas marked, the age of the existing roof covering, any history of leaks in particular rooms, and the location of water tanks or plant rooms that share the roof space. Photographs taken after rain are especially useful, as they show where water actually collects. For any associated works, such as XPS boards at SAR 12–30 per m² where insulation is being added, or liquid roof waterproofing at SAR 8–25 per m² on smaller sections, the same drawings should note which areas are included. Clear notes like these let the technician arrive ready to measure, inspect and advise without repeating basic questions.

For schools, the larger jobs are planned for weekends and holidays.

Signs worth paying attention to

These are the signs most often linked to bitumen membrane:

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

Where the problem usually comes from

• A common cause: no protection layer.
• Seams that were not welded properly.

How we choose the tool in Afif

How the work is done, step by step

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

Mistakes that cost more

• Leaving the membrane exposed without protection

What you get after the work

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