Bitumen membrane in Jazan: cost & published offers

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

Bitumen membrane in Jazan: the local context

Jazan is about 1.9 km from the sea coast (OpenStreetMap). The centre of Jazan sits about 7 m above sea level (SRTM open elevation data).

Team note on Jazan: 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..

How much does a bitumen membrane cost in Jazan, and what do the published offers actually cover? Many property owners ask this before they agree to any roof or basement work, and the answer begins with where Jazan sits. The centre of Jazan lies about 7 m above sea level, and the city is roughly 1.9 km from the coast. That mix of low elevation and nearby sea air is a reason many owners here take damp and salt exposure seriously when they plan a waterproofing job. For bitumen membrane specifically, the published range is SAR 15–35 per m², which is one of the lower-cost options on the list of rates we publish for the area. Other published figures for comparison include liquid roof waterproofing at SAR 8–25 per m² and XPS boards at SAR 12–30 per m².

The inspection usually starts with a walk over the roof or the area to be treated, looking for cracks, blistered surfaces, ponding water and old repairs that may have failed. The inspector notes the condition of the existing layers, checks the edges, parapets and drainage outlets, and measures the area so the quote can be stated per square metre. If there are visible cracks, crack injection is priced separately at SAR 40–120 per metre, so the inspector will also measure any linear defects. For a roof, the goal is to decide whether the existing surface can take a new membrane or needs preparation first. The findings are then written down so you can compare the scope with the published rate range rather than with a single figure.

Before the visit, gather any earlier waterproofing records, the date of the last repair, and a rough sketch of the roof or area with dimensions. Clear access to the roof, the stairwell and any stored items near the edges will save time on the day. Note where water has been seen after rain, including the location inside the building, since this helps the inspector trace the source. It is also useful to decide in advance whether you want the work to be priced for the membrane alone or for the full scope, including any crack repair, so the quote you receive is easy to read against the published ranges.

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

Signs that call for bitumen membrane

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

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

Causes we see in the field

• Seams that were not welded properly — we check this before anything else.
• No protection layer — we check this before anything else.

Tools and methods, and when we use them

The steps in order

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 — Jazan

Questions from Jazan

Mistakes that cost more

• 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.