Arched windows have been around for centuries. Cathedrals, colonial bungalows, Mughal-era architecture the arch is everywhere.
What’s interesting is why it’s showing up just as strongly in brand-new Pune homes in 2026, sitting above a flat-frame living room window or forming the focal point of a double-height entrance lobby. There’s no single answer. Some homeowners want the visual drama. Some want more light. Some are simply reacting to years of perfectly rectangular interiors that began to feel cold and samey. But once you understand what an arched window actually does architecturally and practically the appeal becomes obvious.
At Haimish Windows, we’ve been manufacturing custom window systems in Pune since 1988. Arched windows have always been part of our work, but the volume of requests has increased sharply over the past two years. This piece covers what’s driving that shift and what homeowners actually need to know before specifying one.
First what exactly makes a window “arched”?
The short answer: any window where the top edge follows a curve rather than a straight line. But within that definition, there’s a wide range of shapes and each one reads differently in a room and on a facade.
The arch type matters because each one creates a different visual tone. A full semicircle reads as classical or colonial. A segmental arch reads as quietly contemporary. A gothic point is a deliberate statement. Understanding which arch fits your home’s existing architectural language is the first real design decision and it’s worth thinking through before you fall in love with one you saw on Instagram.
The light argument why arched windows genuinely brighten a room
Most people know arched windows look good. Fewer realise they also perform differently when it comes to light specifically where the light falls and how it moves through the day.
A standard rectangular window of the same width delivers light in a flat, horizontal band. An arched window, because its top follows a curve, introduces light from multiple angles simultaneously particularly the high, raking light that comes in at the arc of the curve. This catches differently at different times of day and creates the soft, even spread that photographers and interior designers both love working with.
In practical terms: a semicircular arch over a 1200mm wide window adds roughly 35–40% more glass area compared to a flat-top version of the same frame width. That’s a significant increase in natural light without changing the wall opening width at all.
What arched windows do to a room’s proportions the visual effect people don’t talk about enough
Rooms with standard rectangular windows can feel horizontally weighted particularly in apartments where ceiling heights are 2.7–3 metres and the windows sit in a predictable band between 900mm and 2100mm from the floor. Everything is straight lines.
An arched window introduces a vertical element that draws the eye upward. It makes a room feel taller than it is not because anything has changed structurally, but because the curve creates visual movement that a flat lintel doesn’t. Interior designers use this deliberately: in a compact room, an arched window can read as an architectural feature that anchors the whole space.
This is particularly relevant in Pune’s apartment market, where floor plates are efficient and rooms are not always generous in height. A well-placed arched window in a bedroom or living room can do more for the perceived spaciousness than a coat of light paint or a statement ceiling fixture.
Where arched windows work best room by room
Arched windows aren’t one-size-fits-all. The arch type, size, and position all need to match the room’s function and dimensions. Here’s a practical breakdown of where they’re most effective and what to specify in each context.
Room-by-room guide arched window placement & specification
The exterior appeal why arched windows change how your home looks from the street
Most conversations about arched windows focus on the interior. The exterior effect is just as significant and in some cases more immediately impactful.
On a standard residential facade, all the windows are the same shape and roughly the same size. The house reads as competent but not distinctive. One or two arched windows particularly at the entrance level or above a garage break the repetition in a way that reads as intentional architectural design rather than a standard build.
In Pune’s villa and independent bungalow market, exterior window design has become a genuine differentiator. Architects are specifying arched windows as part of the facade composition rather than as an afterthought. The result is a street presence that photographs well, holds its premium positioning over time, and signals quality to buyers who may not be able to articulate why the house looks better they just know it does.
Aluminum vs other materials for arched windows why the frame material matters more here than anywhere else
Arched windows are custom shapes. That’s the part most homeowners don’t fully reckon with until they’re mid-project. Unlike rectangular windows, which can be ordered in standard sizes from a catalogue, an arched window requires the frame to be fabricated to the exact curve of the opening.
This is where aluminum’s properties become especially relevant. Aluminum can be bent, curved, and welded to precise radii consistently, across multiple units, with tight tolerances. A timber arched frame requires skilled joinery and is susceptible to seasonal movement that can distort the curve over time. uPVC cannot be bent into a true arch arched uPVC windows are typically made from multiple straight sections joined at angles, which compromises both the visual smoothness of the curve and the structural integrity of the seal at each joint.
Aluminum arched fabrication
Frame sections are roll-formed or bent to precise radii. Consistent curve across the full span. Welded joints maintain structural integrity and weather seal. Available in any powder-coat finish.
uPVC arched fabrication
Cannot be true-bent. Arches are approximated using multiple straight sections with angled joints. Each joint is a potential seal failure point. Visual result is a polygon, not a true curve.
The seal integrity argument is particularly important in Pune’s climate. A curved aluminum frame that has been properly fabricated and glazed will maintain its weather seal through monsoon seasons consistently. A multi-segment uPVC arch will develop micro-gaps at the joints over time as the material expands and contracts which shows up as water ingress, usually right in the middle of monsoon when you least want to deal with it.
