Bitumen membrane for rest houses & farms in Alkharj

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

Bitumen membrane in Alkharj: the local context

Team note on Alkharj: 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.. Main roads in or near Alkharj: King Abdullah Road.

The centre of Alkharj sits about 439 m above sea level (SRTM open elevation data).

Do rest houses and farms in Alkharj really need a bitumen membrane on the roof, and what does it cost? The centre of Alkharj sits about 439 m above sea level, and a flat roof or farm building there takes the same sun and sudden rain as any other site in the area, so a sealed surface is a practical protection rather than an extra. A bitumen membrane is priced at SAR 15–35 per m², which is the figure to use when comparing it with the other options on the list, such as liquid roof waterproofing at SAR 8–25 per m² or XPS boards at SAR 12–30 per m². The right choice depends on how the roof is used, how much foot traffic it carries, and whether the building stores anything on top.

Before any quote is written, the inspection covers the roof surface, the upstands around edges and rooftop fixtures, and any existing cracks or ponding areas. The visit also looks at drainage outlets and the condition of older coatings, since failure often starts where water collects or where a joint has moved. Where a crack is found, crack injection is priced separately at SAR 40–120 per metre, so the inspector measures its length in metres rather than estimating it from a distance. For a rest house or farm with a water tank on the roof, the tank's inner surface is assessed as a separate item, with tank internal coating priced at SAR 25–60 per m². The inspector notes the area of each section so the final scope matches what is actually on site.

To make the visit efficient, prepare a plan or rough sketch of the roof with its dimensions, and list any areas that leak or stain after rain. Clear access to the roof and to the tank, and tell the inspector which parts of the building are in regular use, such as a terrace or a guest area below. If the building has had earlier repairs, bring any records of what was applied and when, because that helps the inspector judge whether an old layer can stay or must be removed. Having these details ready lets the visit focus on the roof itself and gives the property owner a clear, measured basis for the next decision.

Rest houses and farms often have long buried lines, tanks and irrigation that need separate tests.

When do you need bitumen membrane?

The following signs are worth checking before they grow:

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

The most common causes

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

Tools we use in Alkharj

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.

Alkharj in facts and sources

Questions from Alkharj

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.