Roof thermal insulation for duplexes in Rastanura

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

Roof thermal insulation in Rastanura: the local context

Team note on Rastanura: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins.. Rastanura is about 0.2 km from the sea coast (OpenStreetMap).

Rastanura sits about 0.2 km from the sea coast, according to OpenStreetMap, and that closeness shapes where we look first on a duplex roof. Salt-laden air and damp coastal conditions can work into roof surfaces and fixings over time, so the technician starts with the roof edges, parapets and the points where the roof meets walls, since these are where moisture most often gets in and where insulation performance is lost. Checking these junctions first also tells us whether a liquid roof waterproofing layer, typically priced at SAR 8–25 per m², or a bitumen membrane at SAR 15–35 per m², will sit on a sound base.

Some things can only be judged on the day, once the technician is standing on the roof. The exact condition of the existing surface, whether there are cracks or ponding, how the drainage outlets are performing, and whether any old coating has lifted are all visible only on site. The same applies to the age and thickness of any current insulation and whether a board such as XPS, at SAR 12–30 per m², or a spray foam option at SAR 20–45 per m², suits the roof structure. If a crack needs attention, crack injection is quoted at SAR 40–120 per metre, but the length and depth are confirmed during the visit rather than assumed from a distance.

Information that helps the technician is worth gathering before the visit. Note whether the duplex shares a roof with a neighbouring unit, whether there is a water tank on the roof that may need a tank internal coating at SAR 25–60 per m², and any leaks you have noticed in ceilings below. Photographs of the roof and any stains, plus the approximate roof area, let the technician arrive prepared. Clear access to the roof and a note of any rooftop equipment or stored items will also keep the visit efficient for everyone involved.

In a duplex, the two floors often share lines, so tests are done floor by floor.

Signs worth paying attention to

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

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

Where the problem usually comes from

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

Tools we use in Rastanura

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.

Facts and costs — Rastanura

Common questions about roof thermal insulation in Rastanura

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.