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Aluminium Bay Windows

Bay windows are a desirable style for many homes. The protruding panels often give the illusion of a larger home. Bays and bows are no problem with Stellar- all the assemblies, trims and cills are included. Our slimline aluminium bay windows have modern-looking frames which will give you greater views and allow more light to fill your home.  Astragal bars required? No problem.

WER up to
band A+

U-Values as
low as 1.1W/m2K

Air permeability
tested to 600Pa

Water tightness
to 600Pa

Wind load resistance
to 2000Pa

Double or
triple glazed

Less Frame, more light

Aluminium is ideal for bay or bow windows because of its inherent strength, but where multiple panes are used as facets around a curve, every coupling which connects the frames interrupts the view. Because Stellar aluminium bay windows have the slimmest sections on the market, this problem is minimised. There is more glass and more light can enter your home.


Insulation guaranteed

Protection against the weather is guaranteed. Stellar has built-in thermal-break technology to insulate your home. It has seals which prevent draughts and water ingress, and it can accommodate either double or triple-glazed units.


Bay Window Options

Bay and bow windows, like every other part of the Stellar range, can be customised to your needs. The styling can be kept plain and simple, but it’s also possible to incorporate decorative features like glazing bars and stained glass.

bay window corner bay aluminium window in modern bedroom
  • Side-hung sash – max 700mm x 1300mm
  • Top-hung sash – max 1200mm x 1200mm
bay window corner
  • WER up to Band A+ with triple glazing
  • U-value as low as 1.1W/m2K
  • Meets Building Regs without foams or special polyamides
bay window corner
  • Market-leading slim sightlines
  • Astragal bars
  • Thicker cill to replicate timber
  • Needs no dummy sashes
  • Flush sash
bay window corner
  • Reverse butt joint
  • Pre-inserted gaskets
  • Takes fast-fit espagnolettes
  • Flat rebates for easy-fit glazing packers
  • Corner ties only on flush sash
  • No drain preparation on cill
bay window corner
  • Flat backed frames
  • Flat rebates for easy-fit glazing packers
  • Knock-in beads
bay window corner
  • 10-year mechanical performance guarantee
  • 25-year surface paint finish guarantee
  • Lifetime security guarantee on hardware
bay window corner

Standard Colours

Signal White
RAL9003 Flat Matt

Anthracite Grey
RAL7016 Flat Matt

Anthracite Grey / Signal White
RAL7016 / RAL9003 Flat Matt

Jet Black
RAL9005 Flat Matt

Jet Black / Signal White
RAL9005 / RAL9003 Flat Matt

Non-Standard Colours

RAL9001Flat Matt

Agate Grey
RAL7038Flat Matt

Slate Grey
RAL7015Flat Matt

Chocolate Brown
RAL8017Flat Matt

Anthracite Grey


Stellar’s quality demands an equally high-quality range of hardware.

aluminium casement window handle in white

Casement Window

Tilt & Turn Window

aluminium door handle

Flush Door

lift and slide door handle

Lift & Slide Door

Bifold Door

Colours and Finishes

Handle finishes have been selected for scratch resistance and durability as well as their ability to complement the finish of frames.

silver handle

Satin Silver

chrome handle

Polished Chrome

white handle


black handle