Aluminium Bay & Bow Windows in South Wales

Aluminium bay and bow windows give you the period kerb appeal of a traditional bay with the slimmest sightlines on the market. We supply and install angled, square and curved bow aluminium bays across Bristol, Bath, Cardiff, Newport and the wider South Wales region — typically 30–40% more glass than equivalent uPVC, with a powder-coat finish that won't fade for 25+ years.

Benefits

  • Slimmest sightlines: Aluminium frames carry the load on far less material — more glass, more light, more view.
  • Powder-coat colour for life: RAL colour choice with a 25-year colourfast guarantee. Anthracite grey is our most-requested finish.
  • A-rated thermal performance: Thermally-broken profiles with argon-filled units deliver U-values from 1.2 W/m²K.
  • Large pane capability: Aluminium handles much larger spans than uPVC — perfect for wide square bays on 1930s and Edwardian fronts.
  • Secured by Design: PAS 24 locking, laminated glass options and reinforced corners as standard.
  • Bespoke manufacture: Every bay measured on survey and made to the millimetre — no off-the-shelf compromises.

Our aluminium bay & bow windows range

  • Square Aluminium Bays: Box bays with clean 90° corners — modern, contemporary and ideal for new-build extensions.
  • Angled Aluminium Bays: Classic 45° / 30° angled bays for Edwardian and Victorian fronts where heritage proportions matter.
  • Aluminium Bow Windows: Curved 4-, 5- or 6-pane bows with continuous radius — elegant on 1930s semis.
  • Bay Roof Replacement: GRP or tiled bay roofs to weatherproof the bay and complete the install in one visit.

Frequently Asked Questions

How much do aluminium bay windows cost?

Aluminium bays typically run 20–35% more than equivalent uPVC, with the trade-off being far slimmer sightlines and a 25-year colour guarantee. We give fixed written quotes within 24 hours of survey and beat any like-for-like price.

Can I replace a uPVC bay with aluminium?

Yes — we routinely swap tired uPVC bays for aluminium across South Wales and Bristol. Most jobs complete in a single day including the bay roof.

Are aluminium bays cold?

Modern thermally-broken aluminium is A-rated and performs on par with uPVC. The old reputation for cold aluminium frames is from pre-2010 single-chamber systems we don't fit.

Free Quote in 24 Hours — We Beat Any Like-for-Like Quote

Get a fixed-price quote within 24 hours. Free home survey. 10-year guarantee. Call 02920 860894 or request a callback.