Upvc Vs Aluminium Windows: Best Choice For Tamil Nadu Homes

By Author: Elite upvc Windows
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uPVC vs Aluminium Windows: Which Is Better for Tamil Nadu Homes?

Aluminium is cheaper on day one. Here is what the two materials actually cost you over twenty years in this climate.

The Day-One Price Is Not the Comparison That Matters

An aluminium window quoted against a uPVC window of the same size will usually come in lower. That is real, and for a temporary structure or a shed it may be the right answer. For a house you intend to live in for twenty years, it is the wrong comparison — because the two materials behave completely differently once the first monsoon arrives.

Aluminium is a solid metal section. It conducts heat straight through the frame, it corrodes where the anodising is scratched, and it seals with brush strips that flatten within a few years. uPVC is a multi-chambered profile with air pockets inside it, sealed with EPDM gaskets that stay elastic, and it does not corrode at all.

Heat: A Solid Metal Frame Is a Bridge

Put your hand on an aluminium window frame at 2pm in May. That heat is coming through the frame into the room, and no amount of glass upgrade changes it. ...
... The 60mm multi-chambered uPVC profile we fabricate has sealed air chambers running through it, which is why it stays close to room temperature on the same wall.

In an air-conditioned room the effect compounds all day: less heat coming in through the frame, and much less conditioned air leaking out through the seals. Owners of double-glazed uPVC bedrooms in Trichy consistently report the compressor cycling less often.

Rain, Dust and the Seal Around the Sash

The most common complaint we are called about is not broken glass — it is water and dust coming in around an old aluminium slider. Brush seals wear, tracks fill with grit, and the sash no longer presses onto anything.

A uPVC casement compresses onto an EPDM gasket on all four sides, and the frame carries drainage channels that take any water that does get in back out to the outside face. That is why a correctly fitted uPVC casement stays dry through a Northeast monsoon that defeats the aluminium window next to it.

Coastal Sites Settle the Argument

On the Cuddalore coast the question is not really open. Salt air pits aluminium and rusts any steel fixing that is not protected, and the failure shows within about five years. uPVC does not corrode, and the reinforcement is galvanised steel sealed inside the chamber.
For any site within a few kilometres of the sea, we would not quote aluminium even if a customer asked for it.

What Aluminium Still Wins

Honesty matters here. Aluminium takes very slim sightlines on enormous spans — a 4m tall shopfront pane is a job for structural aluminium or steel, not uPVC. It also costs less upfront, which is a real consideration on a large low-budget project.

For residential openings in the sizes people actually build in Perambalur, Trichy, Cuddalore and Kallakurichi, though, uPVC wins on almost every measure that matters over the life of the house.