Roof thermal insulation for residential buildings in Alula

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

What is specific about Alula for roof thermal insulation

Main roads in or near Alula: King Abdullah Road. The centre of Alula sits about 697 m above sea level (SRTM open elevation data).

The first thing checked on a roof in Alula is its altitude and what that means for the building. The centre of Alula sits about 697 m above sea level (SRTM open elevation data), which places homes well above the coastal humidity found further down the Red Sea coast. That elevation shapes how heat and cool nights act on a roof: the surface takes hard daytime sun, then loses warmth quickly after dark. Because of this, the technician will look first at the roof slab itself, its exposure to direct sun, and any existing layers that trap or leak heat, before deciding whether insulation is the right starting point.

Several things are left for the site visit, because they cannot be judged from a description. These include the actual roof area in square metres, the condition of the parapet and drainage outlets, any cracks that need crack injection (priced per metre at SAR 40–120 per m), and whether the roof already carries a liquid or bitumen waterproofing layer. The technician will also confirm whether the choice lies between XPS boards (SAR 12–30 per m²) and spray foam (SAR 20–45 per m²), since each suits different slab shapes and access. Liquid roof waterproofing (SAR 8–25 per m²) and bitumen membrane (SAR 15–35 per m²) will be weighed against what the roof already has. Any figure given at this stage is a range only, and the final quote depends on what the survey shows.

To help the technician, it is useful to have the following ready before the visit: the age of the building, any past roof repairs and their dates, a note of rooms directly under the roof that feel hot or cold, and photographs of visible cracks or stains. Tell the technician if water tanks sit on the roof, since tank internal coating (SAR 25–60 per m²) is a separate job and should be scoped alongside. Access arrangements, such as stairs, a hatch, or a clear route for materials, also save time on the day. Clear answers to these points let the technician arrive with a focused plan rather than starting from zero.

For a whole building, a survey of the shared systems comes before unit-by-unit work.

Signs that call for roof thermal insulation

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

• The ceiling stays hot at night
• The AC runs for long hours in summer
• Strong heat on the top floor

The most common causes

• A common cause: no thermal insulation under the roof protection.
• Old insulation that has deteriorated.

Tools and methods, and when we use them

From the first visit to the report

1. Thermal survey: Hot areas of the roof are mapped.
2. Choosing the system: The material and thickness are agreed in the quote.
3. Installation: The layer is installed and protected.
4. Measurement and documentation: Thickness is measured at spread-out points.

Quick comparison: facts and costs in Alula

Questions from Alula

Common mistakes we see

• Relying on reflective paint alone on an uninsulated roof

The written outputs

You receive: the documented thickness, materials and batch numbers, in a technical report with a verification code.