What is uPVC and Why Did It Become Popular in India?
uPVC (unplasticised Polyvinyl Chloride) windows became popular in India during the 2000s and 2010s, initially in North India and the NCR region, on the strength of two compelling marketing claims: they don't corrode (unlike steel windows), and they don't need painting. Both claims are true. uPVC windows are indeed corrosion-free and maintenance-free in the paint sense. For a market used to steel windows that required annual painting and rusted within years, uPVC felt like a genuine revolution.
However, as the first generation of uPVC windows installed in India's cities ages into its second decade, a more nuanced picture is emerging — particularly for homes in high-heat, high-UV environments like Rajasthan. The material performs acceptably in temperate North Indian conditions. In Jaipur's extreme climate, its limitations become more apparent over time.
The Critical Issue: Heat and UV Performance in Rajasthan
uPVC's most significant vulnerability in Jaipur's climate is its behaviour under sustained high-temperature and UV exposure. uPVC begins to soften at temperatures above 60°C and begins to degrade (through a process called photodegradation) under prolonged UV exposure. Jaipur's summer temperatures routinely reach 45–48°C, and south/west-facing window surfaces in direct sunlight can easily reach 60–70°C in summer afternoons.
The consequences are visible in older uPVC installations across Jaipur: yellowing and discolouration of white profiles (particularly on south-facing elevations), warping of sashes that no longer close properly, and cracking of surface finishes. These are not rare defects — they are predictable material behaviours in extreme heat and UV conditions.
Powder-coated aluminium, by contrast, has no thermal softening point at temperatures encountered in any terrestrial application. An aluminium window frame on a Jaipur south wall at 70°C surface temperature is structurally identical to the same frame at 20°C in January. The dimensional stability of aluminium across Jaipur's full temperature range is absolute. This single fact is arguably the most important consideration for Jaipur homeowners and one that uPVC manufacturers rarely address directly in their marketing materials.
Quality aluminium is an investment that compounds. Every year it performs better relative to cheaper alternatives that are already degrading.
Structural Strength: Aluminium's Unmatched Advantage
Aluminium's mechanical strength is fundamentally superior to uPVC for any application requiring structural performance. An aluminium profile can span significantly wider openings without intermediate support than a uPVC profile of comparable cross-section. For a 3-metre wide sliding window or a bi-fold door, aluminium maintains a straight, rigid sash line; uPVC requires internal steel reinforcement (which adds weight, complicates fabrication and introduces a new corrosion risk if the steel reinforcement is not properly galvanised).
For large commercial applications — shopfronts, curtain walls, ACP systems, structural glazing — uPVC is not even a consideration. These systems exclusively use aluminium. The strength difference matters in residential applications too: larger openings, heavier glass specifications (6mm toughened, DGU units) and multi-storey installations all benefit from aluminium's superior load-bearing capacity.
The Honest Verdict: Which Should You Choose for Your Jaipur Home?
After examining the evidence across all performance dimensions, the conclusion for Jaipur and Rajasthan is fairly clear:
Choose aluminium if: You are building a new home or undertaking a significant renovation. You value long-term performance over initial cost savings. You want large window or door openings. You live in a south or west-facing home with high direct sunlight. You plan to hold the property for 15+ years. You want a wide choice of colours beyond white, beige and brown. You care about the environmental impact of your choices (aluminium is indefinitely recyclable; uPVC is not).
uPVC might be acceptable if: You have a strict initial budget constraint and north-facing exposure (reducing heat/UV stress). You are in a rental property where long-term performance is less critical. You are replacing steel windows in a moderate-climate part of India (though this still doesn't describe Jaipur).
The aluminium premium in Jaipur is typically 20–35% over equivalent uPVC specifications. Given the expected 10–15 year longer serviceable lifespan of quality aluminium in Rajasthan's climate, and the avoidance of the replacement cost that uPVC typically requires at the 12–18 year mark, aluminium almost always represents better long-term value for Jaipur homeowners. This is the honest answer — even from a company that fabricates and installs aluminium windows.
At Darsh Aluminium, we have seen both materials perform in Jaipur's conditions over 25 years. Our recommendation is consistent: for Rajasthan, quality powder-coated aluminium with Jindal or Hindalco profiles will simply outlast uPVC, and its performance advantages only become more pronounced as the years pass.