Built to Seal. Designed to Reflect.
Roof sealing and cool-roof coating, with or without solar.
- One continuous waterproof layer across the roof, under a reflective white coating.
- A roof surface 20–40°C cooler, which also lifts bifacial-panel yield.
- Solar Oasis seals and coats villa and business roofs, in all seven emirates.
By Mujtaba Ali, Co-Founder & Director. Last reviewed .
What it is
Two layers, applied as one job:
Roof sealing
cracks and joints are repaired first, then the whole roof is covered by one continuous waterproof layer.
Cool-roof coating
a reflective white coating over the seal, so the roof sends the sun back instead of soaking it up.
Why it matters in UAE heat
Concrete swells by day and shrinks by night. Hairline cracks open at joints, parapets and around every fixing, and the next downpour finds them. The seal closes them under one continuous waterproof layer. Downpours are rare here, not mild: on 16 April 2024, Dubai International recorded about 140 mm of rain in one day, more than its usual year of about 95 mm, and the heaviest rainfall in the UAE since records began in 1949.
The roof surface runs 20–40°C cooler with the reflective cool-roof coating. Under solar panels, a cooler, reflective roof also lifts bifacial-panel yield: a bifacial panel collects the light that reaches its back as well as its face. How much it gains depends on how high the panels sit above the roof and how they are spaced; panels laid flat to the roof gain little.
A new white cool-roof coat reflects about 80% of the sunlight that lands on it, a little less once it has weathered. That heat matters indoors: DEWA says air conditioning is around 60 to 70% of a home's electricity use in summer.
- The roof surface
20–40°Ccooler, with the reflective coating
- Under bifacial panels
A cooler, reflective roof lifts their yield.
Which system for your roof
One question decides it: is your roof already insulated? Dubai has required thermal insulation in new air-conditioned buildings since 2003, so newer roofs often are; older villas and bare concrete slabs usually are not. We check at your site survey, before we quote, so you never pay for insulation twice.
On villas
Bare concrete roof
we spray a layer of foam, then a reflective white topcoat. One pass adds insulation, the waterproof layer and the cool surface. This is the usual case on an older villa.
Concrete roof, already insulated
it needs no foam. We lay a fresh waterproof membrane, with the reflective coat on top.
Tiled or sloped roof
we apply a liquid coat that follows the profile and seals it. Water runs off a slope, so foam is rarely needed.
On business roofs
Metal roof
we treat and prime the rust, seal every seam and fixing, then apply a reflective coat.
Sandwich-panel roof
the insulated metal panels already keep heat out, so foam is rarely needed. We treat the rust at the fixings and cut edges, seal the joints, then apply the reflective coat.
Factory or warehouse roof
we spray foam where the deck is bare, and use a silicone system where it is already insulated or holds water.
Where a roof holds water we use a silicone system, and where water truly pools we first lay a screed (a thin concrete layer) to a slope, so the roof drains.
We never spray foam over a roof we have not inspected: it can trap moisture in the layers underneath. If the insulation under the roof is already wet, no coat or foam fixes it: that roof needs a rebuild first, and we tell you so.
Before
After
Done on a villa in Ajman
- of roof sealing, with a white cool-roof coating
- 100 m²
- of solar on the same roof
- 7.08 kWp
On this villa, the seal and the white cool-roof coating were carried around the roof's AC units, on the same roof as the solar. With the solar, the villa's yearly electricity bill of AED 8,370 came down by 50%. See the Ajman villa.
Before solar, or on its own
Roof sealing and cool-roof coating, as an add-on to your solar project.
Before the panels go on is a good time to seal a roof: the whole surface is open, and the seal and the solar are planned together. Spray foam goes on first, with the mounting set into the cured foam, so plan it for when your solar goes in.
Not planning solar? We seal and coat a roof on its own too.
For homes and businesses
We seal and coat roofs in all seven emirates:
Villas
we seal and coat the whole roof, around its AC units, water tanks and skylights.
Businesses
we seal and coat flat roofs on warehouses, factories, offices and schools, with or without solar.
What roof sealing costs
Every roof is quoted per site: its area, condition, access and preparation set the price, and your proposal lists the sealing and the coating as their own line. At the survey we confirm the roof's build-up, insulation and drainage, and map every crack, joint and fixing that needs sealing. Your fixed price comes in your proposal, after your site survey.
Send a photo of your roof.
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