Roof thermal insulation for duplexes in Baqiq

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

Before we start: what we know about Baqiq

Team note on Baqiq: 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.. The centre of Baqiq sits about 83 m above sea level (SRTM open elevation data).

Main roads in or near Baqiq: King Fahd Road.

Roof thermal insulation work in Baqiq starts with the basics of the site, and the first thing a technician checks is the elevation. The centre of Baqiq sits about 83 m above sea level (SRTM open elevation data), so the roof is not at a height that calls for special access planning on elevation alone. Before any material is chosen, the technician looks at the roof surface itself, noting whether the slab is sound, whether there are visible cracks, and whether any old waterproofing layer is lifting. This matters because insulation is only as good as the deck beneath it, and a duplex roof with hidden cracks will keep letting moisture in no matter how well the boards are laid.

Several points are left to the site visit, because they depend on the individual building and cannot be judged from a general description. These include the exact condition of the parapets and drainage outlets, the slope of the roof and whether water pools in any area, the state of any rooftop tank or water-heater base, and whether the duplex shares a roof line with a neighbouring unit that would affect the work sequence. The technician also confirms which insulation product suits the roof, since options such as XPS boards and spray foam behave differently under foot traffic and sun exposure. Pricing ranges for these options are estimates only and are confirmed after the inspection, with the choice of XPS boards at SAR 12–30 per m², spray foam at SAR 20–45 per m², and liquid roof waterproofing at SAR 8–25 per m² each depending on the findings.

To help the technician arrive prepared, the homeowner should clear the roof of stored items, note any past leaks and the rooms they affected, and share any previous repair records. It is also useful to say whether the roof is used for anything, such as laundry, a water tank, or a garden, because that changes the finish that will be specified. Access to the roof through the stairwell or a hatch should be kept open on the day of the visit. Information about any earlier crack repairs, which may have been priced at SAR 40–120 per metre for crack injection, helps the technician judge whether those repairs held. With this detail in hand, the visit can move straight to a clear assessment of what the roof needs.

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

Signs worth paying attention to

The following signs are worth checking before they grow:

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

Causes we see in the field

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

Tools and methods, and when we use them

The steps in order

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.

Baqiq in facts and sources

Short answers for Baqiq

What we advise against

• Relying on reflective paint alone on an uninsulated roof

What you receive

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