Spray foam and thermal insulation — service guide
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Polyurethane foam is sprayed as a liquid, expands and sets within minutes into a seamless layer that insulates heat and blocks water at once. That makes it suited to large roofs, hangars and metal roofs. But it has two conditions we never drop: a specified thickness and density that are measured and documented, and a protective coat against sunlight, or it degrades within months.
Where foam fits
- Concrete roofs as thermal and water insulation together with a protective coat (acrylic or polyurea) or tiles over a protection layer.
- Hangars, warehouses, metal and sandwich-panel roofs: sprayed from inside or outside per the design.
- External walls in some cases, and cold rooms for thermal insulation.
Not suited to: the inside of drinking-water tanks, and surfaces needing high mechanical resistance without protection.
When do you need it?
- High heat on the top floor or in a hangar and high cooling bills.
- A roof with no insulation or with failed old insulation where you want thermal and water insulation in one stage.
- Metal roofs leaking at seams and screws.
- A new build where the Saudi Building Code requires thermal insulation.
Execution steps
- Survey: substrate type and condition, the thickness suited to the goal (thermal/water), and the protection type.
- Preparation: clean and dry the substrate, mask what is not sprayed (AC units, openings), and treat cracks.
- Spraying in successive passes to the specified thickness, measuring thickness at distributed points and recording it.
- Density: we use a roofing foam system of suitable density (higher than interior insulation foam) and state it in the quote and record.
- Protection: a UV-protective coat after the foam cures, or tiles over a protection layer when the roof is used.
- Flood test for flat roofs with drains.
- Documentation in the quality record: thickness at points, density, materials and batch numbers, and stage photos.
Safety during spraying
Spraying produces overspray and vapours; the crew wears protective equipment, people and animals are kept away from the work area, and nearby vents are covered. We do not spray in strong wind, rain or high humidity because adhesion fails.
How the service runs, step by step
- Booking
Application area, size and required thickness (or “I need advice”) in the order form.
- Survey and quote
Measuring the area and assessing the substrate, and a written quote with thickness, density, protection type and rate per metre.
- What we need from you
Clear the roof, move vehicles and items away from the overspray path, and close nearby windows.
- Execution
One to several days depending on area and weather, then the protective coat after curing.
- Handover
The thickness and density record, warranty certificate and care guidance.
What you receive
- A written quote with thickness, density, protection type and rate per metre.
- An execution record: thickness measurements at distributed points, density, materials and batch numbers, stage photos, flood-test result.
- A numbered warranty certificate with verify code.
- Guidance: renew the protective coat periodically, and avoid repeated walking on unprotected foam.
How pricing works
Published inspection fee: 150.00 SAR (VAT included). Any further work is quoted after the on-site assessment, in writing, before it starts.
Priced per square metre by thickness, density, protection-coat type and substrate condition. Greater thickness costs more and insulates more; we state the rate per thickness in the quote so you can compare.
Verifying the report and warranty
Every inspection report and warranty certificate we issue carries a serial number, a verification code and a QR code. Enter the code on the verification page to confirm the document really came from us, that it has not been altered or revoked, and the warranty expiry date where one applies. A buyer, landlord or insurer can verify it the same way without contacting us.
Frequently asked questions
What thickness is right?
It depends on the goal, climate and substrate; it is proposed at the survey, written in the quote, and measured after execution at distributed points and documented.
Does foam block water?
Foam of suitable density is a seamless closed-cell layer that blocks water, but UV protection is a condition for it to last, and drain and edge details need treatment.
How long does foam last?
It depends on the protective coat and its renewal; exposed foam degrades within months, protected foam lasts years. We state no fixed lifetime in advertising.
Can it be sprayed over old insulation?
If it is sound and dry, sometimes yes after preparation; otherwise removal is needed.
Can tiles go over foam?
Yes over a protection layer and suitable mesh, stated in the quote.
Is foam safe for health after curing?
After full curing it is stable. Precautions apply during spraying and until curing only.
On-site service is available in Saudi Arabia; the guides and tools can be read anywhere.
This page is informational and educational. Confirming a leak, an insulation condition or a pest infestation always requires an on-site assessment, and structural questions are for a licensed engineer. We do not publish promises we cannot prove.