Roof waterproofing for hotels & serviced apartments in Al Flah, Riyadh

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

Roof waterproofing in Al Flah: the local context

The centre of Al Flah is at 24.7963, 46.7088, about 9.8 km from the centre of Riyadh, with an approximate radius of 1.9 km. The service-area circle on the map below is drawn from this point. Main roads in or near Al Flah: Northern Ring Road, Airport Road, Northern Ring Road.

The centre of Al Flah sits about 645 m above sea level (SRTM open elevation data).

Is roof waterproofing worth the cost for a hotel or serviced apartment building in Al Flah? For most owners, the question is really how much a roof leak will cost compared with keeping the membrane sound. Al Flah sits at about 24.7963, 46.7088, roughly 9.8 km from the centre of Riyadh, with an approximate radius of 1.9 km. The area lies at about 645 m above sea level, so guests and staff here are living in a setting where rooftop water management still matters even in a dry climate. Liquid roof waterproofing typically runs SAR 10–25 per m², while a bitumen membrane runs SAR 15–35 per m², so the cost of protecting a roof is modest next to the cost of repairing ceilings, rooms and guest areas below it.

Before any work is quoted, the inspection should follow a clear sequence. Start by walking the full roof surface to note ponding, blistering, cracked or lifted membrane, and any areas where old coatings have worn thin. Check the upstands, parapets, drains, and the junctions where the roof meets walls, service penetrations and rooftop water tanks. Where tanks sit on the roof, the internal condition of the tank also needs checking, since tank internal coating is priced at SAR 25–65 per m². Look at the ceilings directly beneath the roof on the top floor, as staining there often shows where water is travelling. Cracks that are open enough to leak can be assessed for crack injection, priced at SAR 40–125 per metre, and the inspector should record each defect by location so the repair scope is clear before anything is priced in detail.

To make the visit productive, gather the building's records and prepare the access. Have the original roof drawings, any previous waterproofing warranties or invoices, and a list of past leaks with dates and rooms affected. Confirm which areas are occupied and when guests or residents can be disturbed, since roof work often needs access through guest floors or service areas. Clear the roof of stored items and make sure drains are reachable and not blocked. Note any sections already repaired and what material was used. Having this information ready lets the inspection focus on real problems rather than guesswork, and it gives you a sound basis for comparing options before committing to the work.

For hotels and serviced apartments, rooms are handled in batches to keep units available.

When do you need roof waterproofing?

These are the signs most often linked to roof waterproofing:

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

The most common causes

• A common cause: wrong falls towards the drains.
• A common cause: damaged waterproofing around tank and AC bases.
• Cracks in the roof slab — we check this before anything else.

Tools we use in Al Flah

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.

Facts and costs — Al Flah

Short answers for Al Flah

What we advise against

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

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.