Aluminium vs uPVC windows Dubai: which frame wins
Aluminium is the right frame for large openings, full-height glazing, visible facades and anything you may need to repair or re-finish later. uPVC is the right frame for small, low-rise openings on a tight budget where the frame stays shaded. In Dubai the decision is settled by heat, salt air and how the new frame is fixed into the opening.
The 60-second answer
Wider than 1.5m, floor to ceiling, facing sun or sea, or part of a visible facade on a villa, office or restaurant: aluminium. Four small bedroom windows in an air-conditioned flat with shaded frames: uPVC. Anything needing a powder coat colour match, or a frame strong enough to carry a heavy double-glazed panel, is aluminium every time. We fabricate and fit aluminium windows and doors in Dubai and we say no to uPVC where it will not last.
What Dubai does to a window frame
Sun is the first force. A dark frame on a west wall runs hotter than the air around it, then expands and cools again every day of its life. Salt air in coastal towers attacks hinges, handles and fixings long before the profile gives up. Wind-blown sand abrades any finish that is only skin deep. Air conditioning at full output in August puts condensation on the room-side face of a single-glazed frame, and that water finds the seals. Failures show at the hardware first, which is why stays and fixings matter as much as the profile.
Aluminium's real behaviour
Aluminium moves with temperature. Long spans grow and shrink, so the profile series, the wall thickness and the expansion allowance at each end decide whether the window is still square in five years. Powder coating holds colour far better than anodising under strong UV, and a powder coated aluminium window can be re-coated later if a panel is scratched. Anodised silver looks sharp on day one and weathers unevenly near the sea. Strength is the second argument: aluminium carries large spans and full-height glazing on a slimmer frame than uPVC can manage, which is why restaurant frontages, retail glazing and villa facades are almost always aluminium. It is repairable too. A failed hinge, a bent friction stay or one damaged section can be swapped without replacing the whole window. Our completed window and glazing projects show the spans where this counts.
Where uPVC genuinely wins
uPVC windows in Dubai do have a place: small openings, low rise, tight budget, quiet block. A 900mm bedroom window in a shaded, air-conditioned apartment is a sensible uPVC job, and so is a landlord replacing a row of identical small windows. It insulates well, needs no painting and the sealed unit swaps easily. The limits are real. It cannot span far without steel reinforcement, it discolours after years of direct sun, and it will not take a powder coat colour match. On a full-height villa opening or a restaurant frontage it is the wrong product, and we say so.
Restaurant fit-out with arched partitions and full-height glazing, the kind of span aluminium carries.
Sightlines, sizing and the weight of double glazing
Two frames can hold the same glass and look nothing alike. On a 2.5m opening, a deep frame with a wide mullion can swallow 100mm of glass and darken the room, while a slimmer sightline gives that light back and makes the opening read taller. The trade is weight. A large double-glazed panel is heavy, and every hinge, friction stay and handle has to be rated for it. Cheap hardware on a heavy sash is one of the most common callbacks on this work. Ask for frame depth, mullion width and the load rating of the hardware before you compare prices.
Gold framed arched windows and strip lighting, where sightline and trim meet.
Replacing an existing window: what decides the job
Three checks come before any number. Measure the actual opening rather than trusting the old frame size. Confirm whether the sub-frame and sill can be reused, because a sound sub-frame saves a day of making good. Check whether the building or community needs approval for a facade change, since ordering glass before that is settled is how jobs stall. Access decides the rest. An occupied villa or a working office means agreed hours, protection for floors and furniture, and a route for old frames that does not leave a doorway open overnight.
What a fair quote itemises
A written quote for aluminium window replacement in Dubai should list each of these lines separately:
- profile series and wall thickness, not just the word aluminium
- finish, powder coated or anodised, with the colour code
- glass make-up layer by layer, spacer and any coating named
- hardware by type: hinges, handles, friction stays, locks
- mosquito screens, marked included or not
- removal and disposal of the old frames
- making good around the reveal and sealing
- lead time, and whether the site survey is included
A quote missing any of those is not cheaper. It is shorter, and the missing part returns later as a variation. Two quotes compare only when the profile, glass and hardware match, both include removal, and both followed a measurement on site. If one is far lower, find the dropped line before you sign. For colour matching or unusual spans, read more glass and aluminium guides before shortlisting anyone.
Send photos of the opening from inside and outside, the width and height in millimetres, the floor level, and the building type and location. Note whether the frame faces sun or sea and whether the site is a villa, office, restaurant or shop. WhatsApp is the fastest way to a first read, and you can book a site survey once those measurements are confirmed.
Frequently asked questions
Can I replace just the glass and keep my aluminium frames?
Sometimes. If the frame is square, the drainage still works and the hardware is sound, a new sealed unit drops in and the frame stays. If the frame is bowed or the hinges are failing, new glass on old hardware moves the problem rather than solving it. A site survey settles which case you have.
Does uPVC go yellow in Dubai sun?
Yes, on exposed facades. uPVC discolours under years of direct UV and it cannot be re-coated to bring the colour back. In a shaded, air-conditioned room the change is slow. On a west wall taking full afternoon sun, aluminium with a powder coat holds its colour far longer.
Do I need approval to change windows in a villa or apartment?
Often yes. Many communities and towers require approval for a facade change, and some specify the profile colour. Check with building management or the community before the glass is ordered, because approval delays are the usual reason a window job stalls with the opening stripped.
Is uPVC quieter than aluminium?
The frame matters less than the glass and the seals. A uPVC frame with a good double-glazed unit performs well on small openings. Aluminium with laminated glass on a large opening will often beat it. Ask what the glass make-up is before you accept any noise claim.
