Roof waterproofing for apartments in Al Mlqa, Riyadh

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

What is specific about Al Mlqa for roof waterproofing

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 approximate area shown on the map is centred here. 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.

Roof leaks are the most common problem for apartment buildings in Al Mlqa, and they usually show up as damp patches on the top floor ceilings, bubbling paint, or water tracking down an internal wall after rain. Over time, trapped moisture can weaken the roof screed and the structure beneath it, so the sooner the surface is sealed, the less work the repair tends to need. For roofs, liquid roof waterproofing is typically priced at SAR 10–25 per m², while bitumen membrane runs at SAR 15–35 per m², so the right choice depends on the roof's condition and how much movement it sees.

Al Mlqa is mainly villas, so apartment blocks here often sit among larger properties with their own drainage habits, and the local terrain shapes how water behaves. The centre of Al Mlqa sits about 666 m above sea level, and the nearest wadi channel is about 2.7 km from the centre of Al Mlqa. Water from heavy rainfall can move quickly across open ground toward low points, so roof drains, parapet edges and the junctions where the roof meets walls need careful attention. Where a block also has a basement or water tanks, those areas should be checked at the same visit, since basement waterproofing is priced at SAR 55–160 per m² and tank internal coating at SAR 25–65 per m². For cracks that feed water into the structure, crack injection is quoted at SAR 40–125 per metre.

Before the visit, ask the provider which products they plan to use and why they suit a roof in this location, and request an itemised quote showing the rate per square metre for each area. Ask whether the inspection will cover the roof, parapets, drains, and any basement or tank areas, and whether they will photograph existing cracks and damp marks before work starts. It is also worth asking how long the work will take, how the building's residents will be kept informed, and what aftercare is included. A clear written scope protects both the building owners and the occupants of the top-floor flats.

In an apartment, a problem may start in your unit or in a shared line; we separate the two before any work.

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

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

How we choose the tool in Al Mlqa

How the work is done, step by step

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.

Al Mlqa in facts and sources

Short answers for Al Mlqa

Mistakes that cost more

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

What you receive

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