Types of Home Windows in India (2026): Complete Comparison and How to Choose — Every window type compared on ventilation, cost and best use, plus a frame, glazing and climate framework to choose right.

Bright Indian living room wall lined with several window types side by side, soft daylight

Windows are the single biggest lever you have over how a home feels: how much daylight pours in, how the air moves on a still April afternoon, how much your AC works, and how the façade reads from the street. Yet most buyers in India still choose a window the way they choose a switchboard, by asking the fabricator "sliding ya casement?" and leaving it there. There are at least seventeen window types worth knowing, each with a distinct job. This is the buyer's decision pillar: one complete comparison of every type, then a framework to pick the right ones for your rooms, your climate, and your budget.

If you only want a quick orientation to windows and doors together, read our combined overview at Windows and Doors Design in India. This guide goes much deeper on windows alone: it compares all the types head to head, and each type has its own dedicated deep-dive linked below.

Pick the window for the job the room needs done, not the job the showroom is selling.

The master comparison: all 17 window types

Start here. Ventilation is rated by how much of the opening actually moves air; cost bands are indicative June 2026 and depend heavily on frame, glazing, and size.

Window type	How it operates	Ventilation	Cost band	Best for
Casement	Side-hinged, cranks out ~90°	Excellent (full opening)	Medium	Most rooms, bedrooms
Sliding	Sashes slide on tracks	Good (~50% opening)	Medium	Apartments, balconies
Fixed / Picture	Does not open	None	Low	Framing views, daylight
Awning	Top-hinged, opens out from bottom	Good, rain-tolerant	Medium	Bathrooms, kitchens, over fixed glass
Hopper	Bottom-hinged, opens in from top	Good, secure	Medium-low	Basements, toilets, utility
Pivot	Sash rotates on a central pivot	Good	High	Statement panes, easy cleaning
Bay	Three units project out at angles	Excellent light	High	Villas, living rooms
Bow	Four to five units in a curve	Excellent light	High	Luxury, panoramic rooms
Corner	Two windows meet at a corner	Medium-good	High	Modern wraparound views
Clerestory	A row of windows high on the wall	Good (stack effect)	Medium	Deep plans, double-height, stairwells
Skylight / roof	Glazed opening in the roof	Venting versions exhaust heat	Medium-high	Rooms with no outside wall
Dormer	Window in a projection on a sloped roof	Good	High	Attics, top-floor rooms
French	Full-height double-leaf, opens like doors	Excellent	Medium-high	Balconies, gardens
Floor-to-ceiling	Full-height fixed or sliding glass	Depends on opener	High	View, light, spaciousness
Bi-fold / folding	Panels concertina to one side	Excellent (whole wall)	High	Terraces, indoor-outdoor living
Louvered	Angled slats tilt open together	Good, rain-proof	Medium	Coastal, humid, monsoon
Jali	Perforated screen in the opening	Good, cooled airflow	Varies	Privacy, glare control, hot-dry

Master comparison matrix of 17 window types scored on ventilation, cost and best use

The decision framework: five questions

You do not choose one window type for the whole house. You choose room by room, answering five questions in order.

1. How much ventilation does the room need?

Habitable rooms in India should hit the NBC 2016 rule of thumb of an openable inlet area of at least one-tenth (10 percent) of the floor area, and many local bye-laws push window area to one-seventh or one-eighth for light and ventilation combined. IS 3362 is the reference for natural ventilation of residential buildings.

High need (bedrooms, kitchens, anywhere you want a breeze): casement, awning, louvered, jali, bi-fold.
Moderate (living rooms with AC backup): sliding, French, corner.
None (the window is for light and view only): fixed and picture windows, which you always pair with an operable window nearby.

2. How much space and clearance is there?

Casement and awning sashes swing, so they need clearance and are awkward next to a walkway or balcony railing. Sliding and fixed windows take zero swing space, which is exactly why sliding dominates Indian apartments and balconies. In a tight bedroom on a corridor, sliding wins on space even though casement wins on airflow.

3. What view and how much light?

For drama and daylight, look at picture, floor-to-ceiling, bay, bow, corner, clerestory, and skylight. Clerestory deserves special mention for India: a band of glass high on the wall throws soft, glare-free light deep into a room and lets hot air escape at the top (the stack effect), without sacrificing privacy. Skylights are the only answer for an internal room with no exterior wall.

4. What does your climate and the energy code demand?

This is where most buyers under-think. The more glass you add, the harder the Eco-Niwas Samhita 2018 (ENS) energy code pushes back on the glazing you are allowed to use.

Your WWR (window-to-wall ratio) is the non-opaque envelope area divided by the external wall area.
The wall envelope's RETV (Residential Envelope Transmittance Value) must stay at or below 15 W/m² in composite, hot-dry, warm-humid, and temperate zones. Windows are the single biggest lever on RETV.
As WWR rises, ENS demands a minimum visible-light transmittance (VLT) but, in practice, much lower solar heat gain.

WWR band	Minimum VLT (ENS)	Practical glazing call
0.00 to 0.30	0.27	Single or basic DGU may pass
0.31 to 0.40	0.20	DGU, consider Low-E
0.41 to 0.50	0.16	Low-E DGU, low SHGC
0.51 to 0.60	0.13	Spectrally selective Low-E, shading
0.61 to 0.70	0.11	High-spec Low-E plus deep shading

The takeaway: a floor-to-ceiling glass wall is not just expensive glass, it is a code obligation to buy the right glass. Plan cross-ventilation and shading first; use our cross-ventilation analyzer to test airflow before you commit.

5. What is the budget?

Fixed and sliding are the cheapest (least hardware). Casement, awning, and hopper sit in the middle. Bay, bow, corner, pivot, and bi-fold are premium because of glass area, structure, and specialty fitting (specialty fitting alone runs ₹500 to ₹800 per sqft versus ~₹200 per sqft for standard install).

Decision flow choosing a window type by ventilation, space, view, climate and budget

The frame: uPVC, aluminium, wood, or steel

The window type is the shape; the frame material is its body. This is the first cost-and-performance fork.

Frame	Strengths	Watch-outs	Cost (₹/sqft)
uPVC	Best all-round value, good thermal and acoustic insulation, termite and rust proof, low maintenance	Steel reinforcement needed for large spans	250 to 1,500+
Aluminium	Slimmest sightlines, largest spans, modern look, very strong	Bare metal conducts heat; insist on a thermal break	350 to 3,000
Wood	Warm, premium, classic, heritage fit	2.5 to 4× uPVC over 10 years once you count repainting and monsoon sealing	500 to 1,500+
Steel (MS)	Slimmest of all, Crittall heritage look	Rusts without coating, niche	Varies

Cost bar comparing uPVC, aluminium, wood and steel window frames per square foot

For most new Indian homes, uPVC is the default value pick and aluminium with a thermal break is the choice when you want big, slim spans. Wood and steel are tradition and luxury. Aluminium windows are governed by IS 1948:2024, and IS 1081 covers fixing and glazing of metal frames.

The glass: a quick glazing primer

The frame holds the glass, but the glass does the thermal and acoustic work.

Glazing	What it does	When to choose
Single	One pane, cheapest, poor insulation	Tight budgets, mild climate, small windows
DGU / IGU	Two panes plus a spacer and air or argon	The energy-code default for AC-heavy or large windows
Low-E	Coating that reflects radiant heat, cuts solar gain, keeps light	Almost any sun-facing Indian window
Toughened	4 to 5× stronger, shatters into blunt granules	Large or low panes, floor-to-ceiling, doors
Laminated	PVB interlayer holds glass together when broken	Security, safety, best acoustics, UV cut

Read glass by three numbers: VLT (visible light, higher means brighter), SHGC (solar heat gain, lower means cooler), and U-value (insulation, lower is better). Indian heat wants low SHGC with enough VLT to stay bright. As your WWR climbs, the SHGC has to fall.

Glazing selector matching single, DGU, Low-E, toughened and laminated to use cases

Putting it together: a worked example

A 3BHK flat in Pune (composite climate): sliding windows in the two bedrooms and the kitchen for zero swing space; a casement in the master for a real breeze; a fixed picture window in the living room for the view, paired with an awning above it that you can leave open in the monsoon. Glass: Low-E DGU throughout to keep RETV under 15 and tame the western sun. That single set of choices is more thoughtful than 90 percent of homes get.

Where to go next

Compare cross-flow before you finalise openings: cross-ventilation analyzer.
Plan daylight without glare: Natural Light Planning for Indian Homes.
Design the airflow path: Cross-Ventilation in Indian Homes.
For the quick combined windows-and-doors brief: Windows and Doors Design in India.

Then dive into the type you have shortlisted using the links in the master table above. Each deep-dive carries its own operation diagram, frame and glazing advice, and a clear "choose this if / avoid if" call.

References

IS 1948 (aluminium doors, windows and ventilators), BIS: https://law.resource.org/pub/in/bis/S03/is.1948.1961.pdf
IS 1081 (fixing and glazing of metal doors and windows), BIS: https://law.resource.org/pub/in/bis/S03/is.1081.1960.pdf
IS 3362 (natural ventilation of residential buildings), BIS: https://law.resource.org/pub/in/bis/S03/is.3362.1977.pdf
BIS Guide for Using NBC 2016: https://www.bis.gov.in/wp-content/uploads/2022/08/Booklet-Guide-for-Using-NBC-2016.pdf
Eco-Niwas Samhita 2018 (BEE / ECBC residential): https://ecbc.in/econiwas.html
uPVC windows price per sq ft 2026 cost guide: https://buildingandinteriors.com/upvc-windows-price-per-sq-ft-india-2026-cost-guide/