Bay & Bow Windows
Adds space and light with a graceful curved or angled projection out from the wall of your home.
- More living space
- More natural light
- Made to measure & fitted by our own team
Bay & Bow Windows in Southampton & Hampshire
Bay and bow windows project outward from the wall, adding extra internal floor space, a wider view, and noticeably more natural light to homes across Southampton and Hampshire. A bay window uses angled flat panels (typically three or five), while a bow window uses a gentler, more continuous curve of four or more panels.
We design and fit bay and bow windows built on Liniar uPVC profile systems, with slim sightlines that let more light in and a bubble-gasket seal for a genuinely draught-free fit, engineered to carry the extra structural load of a projecting window safely and made to measure for your opening.


What you get with Itchen
More Living Space
A genuine increase in usable floor space, often enough for a window seat.
More Natural Light
The angled or curved design draws in light from multiple directions.
Kerb Appeal
A striking architectural feature that adds real character to a room.
Made to Measure
Every window measured and fitted by our own team, not a standard size.
Liniar Systems
Liniar Approved Installer
Itchen Glass & Glazing is a Liniar Approved installer. Liniar profiles are designed, manufactured and tested at their own UK facility, which holds ISO 9001 certification.
- 01 uPVC profile systems designed and manufactured in the UK to ISO 9001 standards.
- 02 Multi-chambered profile design engineered to reduce heat transfer and cut energy bills.
- 03 Every Liniar system is covered by manufacturer guarantees and warranties.
- 04 A wide colour and finish range, fitted and finished by our own installation team.
Bay & Bow Windows Specification
Built on Liniar's 70mm uPVC profile system, available in two chamber options depending on the thermal performance you need.
- Profile
- 70mm-deep multi-chambered uPVC, standard 4-chamber or Liniar EnergyPlus 6-chamber for higher thermal performance.
- Thermal Performance
- U-value from 0.81 W/m²K on the whole window, with an energy rating of up to A++.
- Glazing
- 28mm double-glazed units as standard, or 36mm/40mm triple glazing for extra performance.
- Sound Reduction
- Up to 33 decibels of noise reduction with 28mm double glazing.
- Weatherproofing
- Liniar's patented bubble gasket seal for a fully draught-free fit.
- Security
- High-security multi-point locking as standard, with PAS24 and Secured by Design options available.
- Manufacturing
- Extruded in the UK at Liniar's own Derbyshire facility, fully recyclable at end of life.
- Guarantee
- Backed by a 10-year frame guarantee.
Figures are for Liniar's 70mm profile system as published at liniar.co.uk; exact rating depends on the glazing and chamber option chosen for your window.
Bay & Bow Windows Colours and Finishes

Colours and lead times vary, so get in touch with our team for the full range, or see Liniar's complete colour and foil range at liniar.co.uk.
Interested in Bay & Bow Windows?
Request your free, no-obligation quote today.