Bitumen membrane in Alqunfudhah: before buying or handover

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

What is specific about Alqunfudhah for bitumen membrane

Team note on Alqunfudhah: 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 Alqunfudhah sits about 7 m above sea level (SRTM open elevation data).

Alqunfudhah is about 0.4 km from the sea coast (OpenStreetMap).

Should a property owner in Alqunfudhah pay for a bitumen membrane before buying or handing over a building? The short answer is that the place itself makes waterproofing a serious question. The centre of Alqunfudhah sits about 7 m above sea level, and the town is about 0.4 km from the sea coast. Those facts mean the coastal air and ground conditions are close enough to matter, so the roof and below-grade surfaces deserve a proper check rather than a quick look. Bitumen membrane for roofs is typically priced at SAR 15–35 per m², which gives a buyer a reference point when reading a seller's or contractor's quote.

Before the visit, walk the roof and note any ponding, blistered or lifted sections, and any cracks in the parapet and upstands. Check the edges where the membrane meets walls, drains and roof penetrations, since these are the most common leak points. If the property has a basement, inspect its walls and floor for damp patches, efflorescence and cracks; basement waterproofing is priced at SAR 50–150 per m², so a leak there can be costly to fix. Look at the bathrooms too, where bathroom waterproofing runs SAR 15–40 per m². For any visible crack, ask the inspector how it would be treated, since crack injection costs SAR 40–120 per metre. Check the water tank and its internal coating, which typically costs SAR 25–60 per m² to recoat.

To prepare, gather any existing waterproofing records, warranties, previous repair invoices and the building's drawings if you can get them. Note the date of the last roof treatment and any leaks the current owner reported. Arrange access to the roof, basement, bathrooms and tank room on the same day, and take dated photographs of every area you inspect. Bring a list of questions and ask for written quotes that state the area in square metres or the length in metres, so you can compare them directly with the ranges above.

Before buying or taking over a property, an inspection gives you findings in writing before you sign.

When do you need bitumen membrane?

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

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

The most common causes

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

Tools we use in Alqunfudhah

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.

Alqunfudhah in facts and sources

Short answers for Alqunfudhah

What we advise against

• 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.