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.

Product features and benefits

  • WER up to Band A++ with triple glazing
  • U-values as low as 0.95 W/m2K
  • Market-leading slim sightlines
  • Reverse butt joint
  • Takes fast-fit espagnolettes
  • Thicker cill to replicate timber
  • Corner ties only on flush sash
  • Pre-inserted gaskets


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.

Stellar Colour Range


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

Made to Order

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

Inline Sliding 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


All colours and imagery displayed is for illustrative purposes - please get in touch if you would like further information.