Roof waterproofing for rest houses & farms in Al Mlqa, Riyadh

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

Before we start: what we know about Al Mlqa

The centre of Al Mlqa is at 24.8010, 46.6007, about 12.3 km from the centre of Riyadh, with an approximate radius of 4.4 km. The service-area circle on the map below is drawn from this point. The nearest wadi channel is about 2.7 km from the centre of Al Mlqa (OpenStreetMap).

Main roads in or near Al Mlqa: King Fahd Road, King Salman Road, Anas bin Malik Street. The centre of Al Mlqa sits about 666 m above sea level (SRTM open elevation data).

Al Mlqa is mainly villas.

Picture a family who owns a rest house on a farm plot in Al Mlqa. They use it for weekends and holidays, with a flat concrete roof that collects summer heat and the occasional winter storm. Over time they notice a damp patch on a ceiling inside, a bubbling paint line near the parapet, and a water tank that seems to lose its clean finish. Like many owners of villas and farms here, they want the roof sealed before small leaks turn into structural problems.

Al Mlqa sits at the centre point 24.8010, 46.6007, about 12.3 km from the centre of Riyadh, and it is mainly villas, so most properties share similar roof and tank arrangements. The centre sits about 666 m above sea level, and the nearest wadi channel is about 2.7 km away. For a rest house or farm, this means rainwater can arrive quickly and run across the roof, while nearby channels are a reason to keep drainage outlets clear and pathways around the building well graded. Because the district is spread out, owners often service several buildings and should check each roof, parapet and tank rather than assuming they match.

A sensible sequence starts with inspection. Walk the roof after rain, mark any ponding and cracks, and check whether the tank and basement, if there is one, show moisture. Next, clear debris from outlets and repair cracks, since crack injection is usually priced per metre and is easier to budget once the length is known. Then choose the roof system: liquid roof waterproofing typically falls in the SAR 10–25 per m² range, bitumen membrane in SAR 15–35 per m², and spray foam in SAR 20–45 per m². Insulation with XPS boards, around SAR 15–30 per m², can be added where heat is the main concern. If the water tank is inside the property, include tank internal coating at SAR 25–65 per m², and treat any wet bathroom or basement with the relevant per-m² rates. Finally, request written quotes that state the area measured, the materials and the exact scope, so the work can be compared fairly.

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

Signs worth paying attention to

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

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

Causes we see in the field

• 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 Mlqa

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 Mlqa

Short answers for Al Mlqa

Common mistakes we see

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

The written outputs

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