Window replacement and glazing upgrades in Dubai: 2026 costs, permits and NOC rules

Why glazing in Dubai ages faster than the spec sheet suggests

A window system rated for thirty years in Europe does not get thirty quiet years here. The climate works on it from every side at once: surface temperatures on south and west glass through July and August, ultraviolet load that degrades gaskets and sealant, airborne sand that grinds into sliding tracks and rollers, and a permanent temperature difference between 45 degrees outside and 22 inside.

The failure we are called out to most often is a fogged insulated glass unit. Moisture appears between the two panes, and no amount of cleaning touches it, because the perimeter seal has failed and the desiccant inside the spacer bar is saturated. On buildings handed over between 2006 and 2016 we see this on units eight to fifteen years old, usually starting on the west elevation and spreading around the flat over the next few years.

Second is the perimeter silicone. It goes chalky, it shrinks back off the frame, and it stops being a weather seal long before anyone notices. In towers near the water, at Bluewaters or JBR or on a Palm frond, salt accelerates the same process and attacks standard rollers and tracks at the same time.

Third is condensation, and it is a February and March problem rather than a summer one. When humidity spikes, an aluminium frame with no effective thermal break runs cold enough on the inside face to condense water, which tracks down and pools at the skirting. Owners blame the air conditioning and turn it down harder, which makes it worse.

Single glazing, double glazing and what lands on your DEWA bill

Older Dubai stock, particularly villas in Jumeirah, Al Safa and Umm Suqeim and the earlier phases of the villa communities, still carries single clear glass in plain aluminium frames. A single clear pane has a solar heat gain coefficient in the region of 0.8, which means most of the sun striking it arrives in the room. A double glazed unit with a Low-E coating and argon fill typically brings that down to somewhere in the 0.25 to 0.35 range, depending on which coating and which glass the fabricator uses.

That is a large change in the physics and a smaller change in the invoice. Glass is one part of a cooling load that also includes the roof, the walls, the AC system itself, and how much fresh air the building drags in. When we replace all the glazing in a villa and change nothing else, the honest expectation we give owners is a single-digit to low-double-digit percentage cut on the cooling portion of the bill, not a halved bill. Payback measured on electricity alone usually runs past ten years.

The reason people do it anyway is comfort. A room with west-facing single glass has a radiant hot surface in it from two in the afternoon, and no thermostat setting fixes radiant heat. After a Low-E double unit goes in, the same room holds temperature with the AC working less hard, and the sofa two metres from the window becomes usable again. If you are upgrading the cooling system in the same programme, the two decisions interact, which we cover in the guide on ducted and split AC replacement costs.

Thermal break aluminium or uPVC in a Gulf climate

Thermal break aluminium dominates the Dubai market for good reasons. It carries large spans, it takes powder coating that survives UV, and the polyamide strip separating the inner and outer profile is what stops the frame conducting heat straight into the room. Without that strip you have an aluminium bridge between 45 degrees and 22 degrees, which is where the winter condensation comes from.

uPVC insulates better per unit of frame and costs less. The arguments against it here are heat and sun rather than quality. White profiles hold up reasonably. Dark laminated foils absorb heat, and on a long sliding span in full sun a poorly reinforced profile can bow enough to bind the sash. Anything wide needs internal steel reinforcement, and at that point the price advantage narrows.

Service life is where the industry estimates diverge. The figures quoted across the trade put thermal break aluminium at roughly 30 to 40 years in this climate and uPVC at 15 to 20, with the caveat that these are supplier and installer estimates rather than measured data from Dubai buildings. Our own position is narrower and based on what we replace: we have pulled out sun-facing uPVC that was tired at twelve years, and we have refurbished aluminium from the early 2000s where only the gaskets and rollers needed changing.

For a villa in The Meadows or Arabian Ranches with punched openings and modest spans, good uPVC is a defensible choice. For a tower flat with a full-height sliding door onto a terrace, aluminium is the only sensible answer.

U-value, SHGC and Low-E without the brochure language

Three numbers decide what a window does, and every fabricator quote should carry all three.

U-value measures how much heat passes through the assembly by conduction, in watts per square metre per kelvin. Lower is better. A single clear pane in a plain aluminium frame sits well above 5. A decent thermal break frame with an argon-filled double unit lands in the low 2s or below.

SHGC measures how much solar energy gets through as heat, on a scale from 0 to 1. In Dubai this matters more than U-value, because the driver is sunlight, not a cold outdoor air temperature. A low SHGC is what keeps the room from turning into a greenhouse.

Low-E is a microscopically thin metallic coating on one of the internal glass surfaces. It reflects long-wave infrared while letting most visible light through, which is how a unit can be clear to look through and still cut solar gain sharply. Marketing claims about a fixed percentage of heat blocked are worth ignoring; ask for the SHGC and the visible light transmittance of the exact build-up being quoted.

On the regulatory side, Dubai's green building framework, Al Sa'fat, sets envelope performance for new permits. Published glazing figures sit in the region of a maximum U-value around 2.0 W/m²K and SHGC in the 0.25 to 0.28 band, varying by edition and by how much of the facade is glazed. Treat those as orientation figures and confirm the current edition through your consultant, because they are revised. They also govern new build permits rather than a like-for-like replacement in an existing flat, so nobody is going to test your window against them when you swap a fogged unit.

Noise: what glass fixes and what it does not

Acoustic performance is quoted as Rw or STC, both weighted single-number ratings. A standard double glazed unit sits around Rw 30. A laminated acoustic build-up, meaning two panes bonded with a PVB interlayer and usually of differing thickness so they do not resonate together, lands roughly in the Rw 40 to 47 range depending on specification.

Double glazing stops less noise than people expect. Symmetrical units are poor acoustic performers, because two identical panes resonate at the same frequency; asymmetry does more for noise than an extra millimetre of glass. And the air gap in a sealed unit is only 12 to 16 millimetres, which is far too narrow to do much against low-frequency traffic noise. That is why owners on Sheikh Zayed Road and along Al Khail sometimes find that new double glazing improved their heat problem and barely touched their noise problem.

Where noise is the actual complaint, a wide-cavity secondary system beats a new sealed unit. A gap of 100 millimetres or more between the existing glass and a laminated inner pane breaks the sound path in a way no IGU can. Well-fitted systems are reported in the low 40s on Rw, and the perimeter seal around the new inner frame matters as much as the glass.

Permits and NOC: the apartment route and the villa route

Here is the part every window supplier in Dubai leaves off their website.

In an apartment, the facade is almost always common property. The glass in your living room belongs to the building's approved elevation, not to you, and in a tower with a unitised curtain wall it is structurally part of the building envelope. Replacing it externally is refused in most towers, and where it is allowed, the sequence runs: written enquiry to the owners' association or building management, developer design guidelines checked for frame colour and glass tint, NOC application through the community portal, then whatever authority submission the scope triggers.

Timelines follow the same pattern as any other community approval. Emaar quotes roughly 5 to 10 working days, Nakheel 7 to 15. Working days with a weekend and one public holiday means you should plan 2 to 4 calendar weeks. Administration fees commonly run AED 500 to 3,000 at Emaar and AED 2,000 to 5,000 at Nakheel, with a refundable deposit of AED 5,000 to 20,000 on anything beyond cosmetic. The full picture of who reviews what is set out in our guide to community NOC timelines at Emaar, Nakheel and on the Palm.

The colour and profile restrictions are real and they are enforced. Emaar and Nakheel design guidelines specify the approved frame finish and the glass tint for each community, and a reflective film or a black frame on a building of grey ones will be refused or ordered removed. Doing it anyway is the expensive route: a fine, a reinstatement order, and a facade discrepancy that surfaces during due diligence when you sell.

Villas are more permissive but not free. If you are changing the size or position of an opening, that is a structural and facade alteration, and it goes to Dubai Municipality through a registered consultant, with stamped drawings. Like-for-like replacement in the same opening is a lighter case. Inside a master community you still need the developer NOC first, and on Palm Jumeirah the permit goes to Trakhees rather than Dubai Municipality, which changes the consultant you appoint and the fee schedule you pay.

Secondary glazing: the retrofit that usually skips the facade approval

This is the practical conclusion most owners never get told. Secondary glazing adds an independent frame and pane on the inside face of the existing window reveal. The original window stays where it is, the elevation does not change, and from the street the building looks exactly as approved.

Because nothing on the facade moves, secondary glazing in an apartment usually falls outside the developer's facade control entirely. You still tell the building you are doing internal works and you still book the service lift, but you are not asking permission to alter common property. On a Marina or Business Bay tower where external replacement is a flat no, this is often the only route to a quieter and cooler flat.

It has honest limits. You get a second frame line inside the reveal, which changes how the window looks from inside. Cleaning the cavity means opening the inner unit, so hinged or sliding panels beat fixed ones. It does nothing for a failed perimeter seal on the original window, so if water is coming in, fix that first. And it adds no value at all on a window that is already double glazed and quiet.

For a unit held for rental income, secondary glazing plus resealing and new rollers on the existing frames usually beats full replacement on return. We say that even though full replacement is the larger job for us.

Window and glazing costs in Dubai, 2026 bands

These are market ranges for 2026, not a fixed rate card. Window pricing moves with opening size, glass build-up, floor level and access, and the real figure comes after a survey.

• Full window replacement, thermal break aluminium frame with a Low-E double glazed unit: AED 350 to 800 per square metre of opening, supply only. The bottom of the band is a small casement in a standard powder coat colour; the top is a large slider with a laminated or acoustic build-up and a non-standard finish.
• Glass only, a new sealed unit fitted into a sound existing frame: quoted per square foot by most Dubai glass suppliers, roughly AED 80 to 140 per square foot, which converts to about AED 860 to 1,500 per square metre.
• Installation, sealing and making good: AED 50 to 100 per square metre, higher where scaffolding, rope access or a booked service lift with a restricted window is involved.
• Secondary glazing, internal frame with a laminated or acoustic pane: AED 250 to 450 per square metre installed.
• Consultant drawings and stamping, needed only where the opening or the facade changes: AED 4,000 to 15,000.
• Developer NOC administration where required: AED 500 to 3,000 at Emaar, AED 2,000 to 5,000 at Nakheel, plus the refundable deposit.

Read the units before you compare anything. If a glass-only price per square metre comes out above a full-window price per square metre, the two quotes are not describing the same product. Budget window packages use thin clear units in light frames, while the per square foot figure above usually covers a Low-E or laminated build-up supplied and fitted. Ask both suppliers to quote in the same unit, and ask both for the glass specification in writing.

Two worked examples. A Marina two-bedroom with about 18 square metres of glazing: secondary glazing lands at AED 4,500 to 8,100, while full replacement, if the building allowed it, would run AED 7,200 to 16,200 before NOC fees and drawings. A Meadows villa with 45 square metres of glazing: full replacement at AED 400 to 900 per square metre supplied and installed gives AED 18,000 to 40,500, plus the developer NOC and, where openings change, the consultant. Wider figures for whole-property work sit in our apartment renovation cost guide and the villa renovation cost breakdown.

How long the work takes

Approvals come first, and on a community NOC that is 2 to 4 calendar weeks in practice. Run the survey during that window so fabrication can start the day consent lands.

Made-to-measure aluminium windows fabricated locally take roughly 3 to 6 weeks. Imported European systems run longer, commonly 8 to 12 weeks including shipping and customs, and that lead time is the single biggest reason window projects slip. Order the frames before you demolish anything.

Installation itself is quick. Six to ten openings in an apartment take 3 to 5 working days if the old frames come out cleanly, and plaster repairs, reveals and paint add several days after that. Sequence matters: windows go in before final finishes, because cutting out an old frame damages the reveal every time.

Summer adds one constraint that catches people out. The mandated midday break from 15 June to 15 September, 12:30 to 15:00, applies to outdoor work, which includes anything happening at an open facade. High wind at altitude will also stop work on an open opening in a tower, and no foreman worth hiring will argue about that.

End to end, a straightforward apartment job is 6 to 10 weeks from first enquiry to finished reveals. A villa with changed openings and a consultant submission is 10 to 16 weeks. Those dates and the price sit in the contract before we start, with a penalty against us for each day of delay, and the way we structure that is set out in our renovation and fit-out services.

FAQ

Can I replace the windows in my Dubai apartment without asking the building?

No. In nearly every Dubai tower the facade is common property and the glazing forms part of the approved elevation, so you need written consent from the owners' association or the master developer before any measurement happens. Replacing glass without it risks a fine, a reinstatement order and a discrepancy that shows up when you sell. Internal secondary glazing is the route that usually sidesteps the issue, because the facade is untouched.

Does replacing windows need a Dubai Municipality permit?

It depends on whether the opening changes. Like-for-like replacement in the same aperture is generally handled through the developer or building NOC rather than a full authority submission. Changing the size or position of an opening is a structural and facade alteration and goes to Dubai Municipality through a registered consultant, or to Trakhees if the property is on Palm Jumeirah.

Will double glazing actually cut my DEWA bill?

It reduces the cooling load from the glass, and a Low-E unit with argon typically brings solar heat gain down from around 0.8 on single clear glass to roughly 0.25 to 0.35. On the total bill the honest expectation is a single-digit to low-double-digit percentage saving on the cooling portion, because glass is one contributor among several. Comfort improves noticeably before the electricity bill does.

Is uPVC a bad idea in Dubai?

Not automatically. White uPVC in modest openings performs well and costs less than aluminium. The problems appear with dark foil finishes in full sun and with wide sliding spans that need internal steel reinforcement, at which point the price gap closes. Industry estimates put uPVC service life at 15 to 20 years here against 30 to 40 for thermal break aluminium, so factor a second replacement into a long hold.

What does secondary glazing cost compared with new windows?

Secondary glazing runs roughly AED 250 to 450 per square metre installed, against AED 400 to 900 per square metre for a new thermal break aluminium window supplied and fitted. It also skips the NOC fees and consultant drawings that a facade change triggers. For noise specifically it often outperforms a new sealed unit, because the wide cavity does what a 12 millimetre gap cannot.