uPVC Windows Price in 2026 and How They Compare with Aluminium

Windows decide how much light, noise, dust and rain enter a home. In Bangalore, where many new flats face busy roads, construction sites or the afternoon sun, the choice of window frame matters more than most homeowners realise.

Most new homes and renovations now use either uPVC or aluminium frames instead of wood or steel. Both are durable and low maintenance, but they differ in insulation, appearance, strength and price.

This guide explains uPVC window prices in 2026, the main window types and how uPVC compares with aluminium, so you can choose the right frame for each opening.

What uPVC windows are

uPVC stands for unplasticised polyvinyl chloride. uPVC frames are made from rigid PVC profiles with hollow chambers inside, reinforced with galvanised steel for strength.

The chambers trap air, which reduces the transfer of heat and sound. Combined with rubber gaskets and multi-point locks, uPVC windows seal tightly against dust, rain and noise.

What aluminium windows are

Aluminium windows are made from extruded aluminium profiles, usually powder coated or anodised. They are strong, slim and light.

Standard aluminium frames conduct heat, so they do not insulate as well as uPVC. Thermally broken aluminium frames, with an insulating strip inside, close much of that gap but cost more.

Window types

Sliding windows have sashes that slide horizontally on tracks. They suit balconies, large openings and spaces where an opening sash would get in the way.

Casement windows open outward on hinges, like a door. They seal more tightly than sliding windows and open fully for ventilation.

Tilt and turn windows can tilt inward at the top for ventilation or swing open fully for cleaning.

Fixed windows do not open. They bring in light and views where ventilation is not needed.

Sliding doors and French doors use the same profiles for balconies and terraces.

UPVC window prices in 2026

In Bangalore, uPVC sliding windows cost about Rs 450 to Rs 800 per sq ft installed, including standard 5 mm glass, hardware and fixing. Casement windows cost about Rs 550 to Rs 1,000 per sq ft. Tilt and turn windows cost Rs 800 to Rs 1,400 per sq ft. Double-glazed units add Rs 150 to Rs 400 per sq ft, and laminated or toughened glass adds more.

A standard 4 by 4-foot bedroom window costs roughly Rs 7,200 to Rs 16,000 in uPVC, depending on type and glass.

Aluminium window prices in 2026

Standard aluminium sliding windows cost about Rs 350 to Rs 700 per sq ft installed. Premium aluminium systems with slim profiles and better hardware cost Rs 700 to Rs 1,400 per sq ft. Thermally broken aluminium costs more again.

UPVC vs aluminium: insulation

uPVC insulates better against heat and noise. In rooms facing traffic or strong afternoon sun, uPVC windows with double glazing make a noticeable difference.

Standard aluminium conducts heat and sound. Thermally broken aluminium narrows the gap.

UPVC vs aluminium: strength and size

Aluminium is stronger, so it allows slimmer frames and larger glass panes. For very large sliding doors and floor-to-ceiling windows, aluminium is often the better choice.

uPVC frames are thicker and need steel reinforcement for large openings.

UPVC vs aluminium: looks

Aluminium frames are slimmer and look more modern. They come in many colours and finishes.

uPVC frames are bulkier. White is standard, and wood-grain or coloured laminated profiles cost more.

UPVC vs aluminium: maintenance and life

Both need little maintenance: clean the tracks and the glass, and check the gaskets every few years.

uPVC can yellow or weaken over many years in strong sun if the profiles are not UV-stabilised. Good brands use UV-resistant compounds.

Aluminium can corrode near the sea, which is not a concern in Bangalore. Powder coating protects it.

Choosing for a Bangalore home

Rooms facing a busy road or a construction site: uPVC casement or sliding windows with double glazing.

West-facing rooms that get hot in the afternoon: uPVC with double glazing or solar control glass.

Large balcony sliding doors: premium aluminium or reinforced uPVC.

Bathrooms: uPVC or aluminium louvers or small casement windows with frosted glass.

Glass choices

The glass matters as much as the frame. Standard 5 mm clear glass is fine for most bedroom windows away from traffic.

Toughened glass is about four to five times stronger and breaks into small blunt pieces. It suits large panes, low windows and balcony doors where people might walk into them.

Laminated glass holds together when broken and cuts noise better. It suits street-facing rooms and children's rooms.

Double-glazed units, with an air or gas gap between two panes, give the best insulation against heat and noise, and are worth it on west-facing walls and busy roads.

Frosted, tinted and reflective glass add privacy or reduce glare, but they also reduce daylight, so use them where they are needed rather than everywhere.

Mesh and grills

Most Bangalore homes need mosquito mesh and many need grills. Plan them with the window, not after. uPVC and aluminium systems offer matching sliding or pleated mesh shutters, and grills can be fixed outside the frame without drilling through it.

Installation tips

Measure after the plaster is done, because openings change. Ask for the profile brand, the reinforcement and the glass type in writing.

Make sure the gap between the frame and the wall is sealed with silicone outside and finished neatly inside. Poor sealing is the most common cause of leaks around new windows during the monsoon. Ask for a drip groove or a sloped sill outside each window, so rainwater runs away from the frame instead of sitting against it, and check the drainage slots in sliding tracks before the first rains.