Roof waterproofing in Allith: cost & published offers

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

What is specific about Allith for roof waterproofing

The centre of Allith sits about 5 m above sea level (SRTM open elevation data). Allith is about 1.2 km from the sea coast (OpenStreetMap).

Main roads in or near Allith: Al Laith Road, Amr Bin Al Aas Street.

How much does roof waterproofing cost in Allith, and what do published offers actually cover? Many owners ask this before they book, and the answer starts with the place itself. The centre of Allith sits about 5 m above sea level, according to SRTM open elevation data, and the town is about 1.2 km from the sea coast, based on OpenStreetMap. Those two facts matter because a roof here faces coastal air and sits on land that does not rise far above the water, so moisture and salt can wear down surfaces faster than many owners expect.

For roofs, the published rate for liquid roof waterproofing is SAR 8–25 per m², and a bitumen membrane is quoted at SAR 15–35 per m². Spray foam is listed at SAR 20–45 per m², and XPS boards at SAR 12–30 per m². Each offer covers a different system, so compare like with like. A roof that also has cracks may need crack injection, which is listed at SAR 40–120 per metre. Our published ranges are per unit of work, so the final figure depends on the roof area and the system chosen after inspection.

A visit usually begins with a walk across the whole roof to find ponding areas, lifted edges, cracks and any drain points. The inspector then checks the existing surface to see whether it can take a new layer or must be cleaned or partly removed first. Measurements are taken for each zone so the quote reflects the real area and the real defects rather than a guess. The inspector will also note where water is entering the building below, since leaks often appear far from the spot where the damage starts. The result is a written scope that lists each system, its unit rate and the measured quantity.

Before the visit, clear access to the roof and to any hatch or stair that leads up to it, and move loose items off the surface. Gather any earlier waterproofing records, warranty papers or past repair invoices, since they show what was applied before and can save time. Note where you have seen damp stains, ceiling marks or pooling after rain, and take photographs if you can. Confirm the roof's approximate size so the measurement step runs smoothly. With these details ready, the inspection can focus on the work your roof actually needs.

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

Signs worth paying attention to

The following signs are worth checking before they grow:

• Stains on the top-floor ceiling after rain
• Water pooling on the roof
• The old waterproofing is cracking

The most common causes

• A common cause: damaged waterproofing around tank and AC bases.
• A common cause: wrong falls towards the drains.
• A common cause: cracks in the roof slab.

How we choose the tool in Allith

From the first visit to the report

1. Survey: Falls, drains and the condition of the old layer are recorded.
2. Preparation: Cleaning and repairs before any new layer.
3. Primer: The base coat that the system needs.
4. Waterproofing layers and details: Corners, upstands and bases get their own detail.
5. Flood test: The roof is flooded and checked before it is covered.

Quick comparison: facts and costs in Allith

Questions from Allith

What we advise against

• Covering the waterproofing before the flood test
• Ignoring the tank bases

What you receive

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