Window Style · Light, Depth, Character
Bay Windows
Bay, bow and corner windows that extend the room outwards, add a deep sill and pull in light from three angles. Made in Westmeath in uPVC, aluminium, timber and aluclad.
A bay window steps outwards from the line of the wall, creating a deeper sill, more daylight from three sides, and a small architectural moment in the room. They’re a defining feature on Edwardian villas, 1930s semis and modern detached homes alike.
Wright Windows manufactures bay, bow and corner configurations at our Milltownpass factory. The geometry is fabricated to your wall opening — we measure on site, design the angles, and ship a single assembled unit (or assemble in‑situ for larger spans). Replacement bay projects on existing semi‑detached stock are one of our most common briefs.
- Bay, Bow & Corner
- 3 or 4 Light Configurations
- Site-Measured to Fit
- Made in Westmeath
Bay vs Bow vs Corner
Three geometries, one principle.
Bay windows are angled — typically three flat panes set at 30° or 45° angles, creating a faceted projection. The most common form on Irish semis and 1930s villas.
Bow windows are curved — usually four or five narrow panes forming a gentle arc. A softer, more Edwardian look.
Corner windows wrap two walls of the room with a single window assembly, often used on contemporary builds to maximise light on a southerly or south‑westerly corner.
Why Bay
Key Benefits
- Light from three sides. The angled geometry pulls daylight in from the side as well as the front of the wall.
- Deeper internal sill. Usable as a window seat, plant shelf or display space.
- Visual depth. Adds architectural interest to flat‑facade properties.
- Wider sense of space. The bay extends the room footprint by 200–400mm without changing the floor plan.
- Same thermal spec as flat windows. U‑values from 0.7 W/m²K, fully A‑rated.
Specifications
Configurations & Sizes
Bay Angles
Standard 30° or 45° bay configurations, 3 or 4 lights. Bow windows in 4 or 5 light layouts. Corner windows fabricated to wall geometry.
Opening Layout
Casement or tilt‑and‑turn sashes on the side lights; fixed centre. Bars and trickle vents to match existing.
U-Values
Same thermal spec as flat windows — from 0.7 W/m²K (uPVC triple) to 0.84 W/m²K (timber/aluclad triple). All SEAI compliant.
Best Suited For
Where bay windows belong.
- 1920s–1950s semis where the original bay is the defining street‑facing feature.
- Edwardian and Victorian villas with bow window detail.
- Living rooms wanting a window seat, plant shelf or reading nook.
- Contemporary new builds using corner‑wrap windows for daylight.
- Replacement of tired bay frames — one of the most‑impactful single‑product upgrades.
Customisation
Colours, Bars & Glazing
- Colours: 100+ options across uPVC and aluminium, full RAL on aluminium and aluclad.
- Dual‑colour: Different finish inside and out at no surcharge.
- Bars: Astragal, internal bars between glass, or Georgian true‑divided lights.
- Glazing: Clear, obscure, laminated acoustic, low‑E solar control.
Recent Work
Bay Window Project Gallery
Bay Windows FAQ
Common Questions
What’s the difference between a bay, a bow and a corner window?
A bay is angled — three flat panes meeting at 30° or 45°. A bow is curved — four or five narrow panes forming an arc. A corner window wraps two walls of the room with a single window assembly, common on contemporary builds. All three create the same effect: light from multiple angles plus a deeper sill.
Can I replace my existing bay window without changing the structure?
In most cases, yes — we measure your existing bay on site and fabricate a replacement to match the angle, height and projection of the original. The structural roof (or flat lead/zinc top) usually stays in place; we replace only the window assembly itself. We’ll confirm at site survey.
Are bay windows as energy efficient as flat windows?
Yes — the U‑values are identical because the glazing units, frame profile and weather seals are the same as on our flat windows. The geometry doesn’t change the thermal performance.
Can I have a window seat fitted as part of the bay?
Yes — the deep internal sill of a bay window is ideal for a fitted seat or storage bench. We’ll spec the head height to accommodate it; the joinery itself is typically done by a separate carpenter or kitchen fitter once the window is in.
Ready to quote your bay window?
We’ll send a surveyor to measure on site and quote the geometry properly. Drop us your address or visit the Milltownpass showroom.
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