Arched Head Windows — London & the Home Counties
The window that sits at the top of a Georgian bay, above a Victorian bay-front porch or in the gable of a converted chapel. Radius, segmental and Gothic-arched heads CNC-cut to your survey template — matched precisely to the surrounding brickwork or stonework.
Cut to the template
Every arched-head window is cut from a physical template taken on site. No assumptions, no gaps at the brickwork, and no need to disturb the arch above — the frame arrives shaped exactly to the opening.
Overview
A closer look at what makes the arched head windows range distinctive — the specification, the styles, the process, and the answers to the questions we get asked most.
Six-chamber uPVC (fabricated to radius) or aluminium (roll-formed) profile · curved argon-filled A-rated glazing · warm-edge spacer bars · gothic tracery and radial bar options
Radius, Segmental & Gothic
True radius (semi-circle), segmental (shallow arch), Tudor and Gothic (pointed) heads — CNC-cut to a survey template taken from the existing opening.
Template-Cut Precision
Every arched-head window is cut from a physical template surveyed on site — no assumptions, no gaps at the brickwork, no need to disturb the arch above.
Traceried & Divided
Arched heads can be divided by radial glazing bars, gothic tracery or curved astragal bars — matched to the period of the property.
Any Material
uPVC (fabricated on curved profile), aluminium (roll-formed) or heritage flush-casement — the material is chosen to suit the property, the head is cut the same way.
Modern Thermal Performance
Argon-filled A-rated glazing curved to the arch, warm-edge spacer bars and thermally-broken frames — U-values from 0.9 to 1.4 W/m²K on standard arched heads.
Chapels & School Conversions
The window we most often supply on chapel conversions, converted schools, Victorian bay fronts and stable-block conversions — properties where a rectangular replacement would look wrong.
Three material ranges, one configuration.
The arched head configuration is available across every one of our window ranges — the material choice is yours.
Engineered to the millimetre.
Every frame we install is made to your survey sizes with the following performance envelope as standard.
- U-value (whole window)
- 0.9 – 1.4 W/m²K
- Head shapes
- Radius (semi-circle) · segmental · Tudor · Gothic (pointed)
- Survey
- Physical template taken on site — no assumptions, no gaps
- Divisions
- Radial bars · gothic tracery · astragal curved to arch
- Lead time
- 6–8 weeks — includes CNC cutting and curved glass
- Compatible with
- uPVC · aluminium · flush casement · sash below
Arched Head Windows across London
and the Home Counties.
We install arched head windows across six counties — every project surveyed, made and fitted by our in-house team. Choose your county to read local knowledge, planning notes and recent work.
See all areas coveredArched Head Windows — installed.
A selection of recent installations across London and the Home Counties, photographed on site.
Practical answers.
Everything homeowners ask us about arched head windows — survey, lead times, guarantees and coverage.
Do I need to remove the brickwork above the arch?+
No — we survey the internal arch profile with a template and cut the new frame to match. The masonry above stays completely undisturbed.
Can the arched head be an opening light?+
Usually not — the curved head is a fixed light for structural reasons. Openings are placed in the rectangular section below the arch. On a large chapel-style window, we specify a radial opening light where head geometry permits.
Can you match an existing Victorian bay-front arched window?+
Yes — we survey and template every arch individually, so even where original windows are inconsistent across a terrace we can match each one exactly. A single terrace of five bay-front houses might have five slightly different templates; we cut all five.
What makes arched-head windows more specialised?+
Each frame is CNC-cut to a physical template, while the profile and sealed glass unit must be curved precisely to the opening. Repeated matching arches can be manufactured from the same approved template.
Enquire about
Arched Head Windows.
Speak with our design team, book a home survey, and receive a fixed written quotation — all with no obligation.
Call · 020 3633 0405