Roof waterproofing in Al Nda, Riyadh: emergency

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

What is specific about Al Nda for roof waterproofing

The centre of Al Nda is at 24.8059, 46.6826, about 10.3 km from the centre of Riyadh, with an approximate radius of 1.2 km. The service-area circle on the map below is drawn from this point. Main roads in or near Al Nda: Abu Bakr Al Siddiq Road, Al Thumamah, Prince Mohammed bin Salman bin Abdulaziz Road.

The centre of Al Nda sits about 660 m above sea level (SRTM open elevation data).

Picture a homeowner in Al Nda, Riyadh, who wakes to a damp stain spreading across a bedroom ceiling after a night of heavy rain. The roof is the first suspect, but the water may have been finding its way in for weeks through a hairline split near a parapet or an old joint that no one thought to check. By the time the drip is visible, the problem has usually been building for some time, and the owner is looking for someone to come quickly and stop the leak before it damages the plaster and paint below.

Al Nda sits at about 24.8059, 46.6826, roughly 10.3 km from the centre of Riyadh, with an approximate radius of 1.2 km, and its centre lies about 660 m above sea level. For a roof owner, this means the area is a little removed from the city core, so it can take longer for a crew to arrive, which is worth factoring in when you decide how urgently to act. The elevation and open terrain also mean roofs here are exposed to strong sun and wind, which dries and cracks sealants over time. Expect repair costs to vary by method: liquid roof waterproofing typically falls in the range of SAR 10–25 per m², bitumen membrane SAR 15–35 per m², and spray foam SAR 20–45 per m², while crack injection is priced SAR 40–125 per metre. Use these ranges to compare quotes rather than to assume a fixed price.

Start by making the area safe: move furniture away from the stain, switch off any electrical fittings near the wet ceiling, and place buckets to catch the drips. Next, trace the source by checking the roof surface after the rain has stopped, looking for cracks, lifted edges and blocked drains. Mark the damaged spots so the crew can find them quickly. Then ask for a site inspection and a written breakdown of the proposed method and its measured area, so you can see exactly what is being sealed. Finally, once the leak is stopped, schedule a follow-up check after the next rainfall to confirm the repair has held.

If water is flowing, close the main valve first, then call or message with photos.

Signs that call for roof waterproofing

These are the signs most often linked to roof waterproofing:

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

The most common causes

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

Tools we use in Al Nda

The steps in order

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 Nda

Questions from Al Nda

What we advise against

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

What you get after the work

You receive: a quality record with photos and the flood-test result, in a technical report with a verification code.