Roof thermal insulation in Alhait: without breaking

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

Before we start: what we know about Alhait

The centre of Alhait sits about 980 m above sea level (SRTM open elevation data).

Is it possible to add roof insulation in Alhait without tearing up the whole house? Most owners here ask that first, and the answer depends on the roof surface and the work you need. Alhait sits about 980 m above sea level, so the climate and the building stock differ from the coast, and a roof that suits one property may not suit the next. The facts give a clear way to think about the options. Spray foam is priced between SAR 20 and SAR 45 per m², XPS boards between SAR 12 and SAR 30 per m², and a bitumen membrane between SAR 15 and SAR 35 per m². Liquid roof waterproofing, at SAR 8 to SAR 25 per m², is the lowest-cost surface treatment, so the right choice depends on whether you need insulation, waterproofing, or both.

The inspection starts with a walk over the roof to look at the existing surface, any cracks, ponding areas and the condition of parapets and drains. Where cracks are visible, the crack injection line of the price list applies, at SAR 40 to SAR 120 per metre, and it is worth measuring their length before the visit so the surveyor can estimate that part of the job. The surveyor then checks the roof edges and any points where pipes or fittings pass through, because these are the usual places where moisture enters. Notes are taken on the roof area in square metres, since every price on the list is calculated per m². The inspection is designed to show which method fits the existing structure rather than to force one product onto every roof.

Before the visit, gather the information the surveyor will ask for. Measure the roof area as accurately as you can, noting any rooftop water tanks, because the tank internal coating, priced at SAR 25 to SAR 60 per m², is a separate item that is sometimes needed alongside roof work. Mark any leak stains or cracks you have seen, and note the dates when they appeared. If there was a previous coating or membrane, have any records or details of it available. Clear access to the roof and to the rooms below helps the team check for moisture from inside as well. With these details ready, the visit can focus on the roof itself and a clear scope can follow.

The aim is to locate the cause with instruments first, so any opening is limited to one point.

Signs worth paying attention to

If you notice one of these signs in Alhait, 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

Where the problem usually comes from

• No thermal insulation under the roof protection.
• Old insulation that has deteriorated — we check this before anything else.

How we choose the tool in Alhait

How the work is done, step by step

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 — Alhait

Questions from Alhait

Common mistakes we see

• Relying on reflective paint alone on an uninsulated roof

What you get after the work

The written output: the documented thickness, materials and batch numbers. The report is numbered and can be checked with its verification code.