Bitumen membrane in Tabuk: before summer & rain season

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

Before we start: what we know about Tabuk

The centre of Tabuk sits about 762 m above sea level (SRTM open elevation data). Team note on Tabuk: 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..

Tabuk sits about 762 m above sea level, which means its summers are hot and dry and its rain, when it comes, tends to arrive in short, sharp bursts. For a bitumen membrane on a flat roof, that combination matters. Heat softens the membrane and can open up laps and edges, while a sudden downpour tests drainage outlets and upstands before the surface has had time to settle. So the first things checked here are the roof's surface condition, the state of the laps and seams, the condition of the upstands around parapets and rooftop fixtures, and whether water is already ponding or tracking toward the building's walls. Those checks come first because they show whether the membrane is still bonded and whether it can shed water before the rain season and the heat peak arrive.

Several things can only be settled at the site visit. The technician needs to see the actual extent of any blistering, splitting or granule loss, confirm the substrate beneath the membrane is sound and dry enough for new work, and measure the roof area so the job can be priced properly against the bitumen membrane rate of SAR 15–35 per m². The visit is also where the condition of the drainage outlets, the slope of the roof and any previous repairs are assessed. Whether the existing layer can be overlaid or must be stripped back is a judgement that depends on what is found on the roof, not on anything that can be decided from a description alone.

To help the technician, it is useful to note when the leaks or wear first appeared, whether they follow heavy rain or the hottest part of the day, and where water has been seen inside the building. Any earlier repair records, the age of the membrane if known, and access arrangements for the roof should be shared before the visit. Mention whether the roof is used for water tanks, air conditioning units or foot traffic, since these affect where the work can be carried out. Clear information of this kind lets the technician arrive prepared, check the right areas first and give an accurate picture of what the roof needs before summer and the rain season.

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

Signs that call for bitumen membrane

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 — 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.

Facts and costs — Tabuk

Questions from Tabuk

What we advise against

• Leaving the membrane exposed without protection

The written outputs

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