Choosing the Right Electric Curtain Track for Your Bay Window

Bay windows are one of the most coveted architectural features in British homes — they flood a room with light, create a sense of space, and add real character. But when it comes to fitting curtains, that same elegant geometry becomes a genuine headache. Unlike a flat wall, a bay window turns corners, and any curtain track you fit must follow those angles precisely. Add a motor into the mix, and the choices narrow considerably. This guide walks you through everything you need to know about choosing, measuring, and fitting an electric curtain track for a bay window — from the bend radius that determines what’s possible, to the products that genuinely work, to what you should expect to pay.

Why Bay Windows Need a Specialist Curtain Track

A standard electric curtain track is a straight aluminium extrusion with a motor housing at one end. It works perfectly on a flat wall — but try to fit one across a bay window and it simply won’t follow the contours. Bay windows also create specific engineering challenges:

• Uneven weight distribution. When a track bends around a corner, the curtain’s weight pulls outward at each angle point. A track with no bay-specific reinforcement will gradually distort.
• Glider friction at bends. The motor has to pull gliders around corners. If the bend radius is too tight, friction increases sharply and the motor strains or stalls.
• Overlap management. A bay window with centre-opening curtains requires the panels to meet precisely at the middle, not at an awkward angle point.
• Support bracket spacing. Near bends, bracket positions are constrained, demanding a different approach to fixing.

You need a track that has been designed to be bent — more precisely, a track that is bent to your measurements during manufacture and arrives ready to fit. This is a specialist product, and there are only a handful on the market that genuinely deliver for a bay window curtain track application.

How Electric Curtain Tracks Bend for Bay Windows

Angle bends vs. curve bends

An angle bend creates a crisp, defined angle in the track — the track changes direction at a single point. This suits traditional square or rectangular bay windows where the window reveals meet at a distinct angle, typically 90°, 120°, or 135°.

A curve bend creates a gradual arc. This suits bow windows — the gently curved type where there is no definite corner. A curved bend distributes glider friction more evenly because there is no single stress point.

Minimum bend radius

Every bendable track has a minimum bend radius — the tightest arc the track can follow before the internal channel distorts and gliders can no longer move cleanly. This is the single most important technical figure when specifying a motorised curtains curved track.

Track channel design

Tracks designed for bending use a rounded internal channel, often with a lubricated finish, so that gliders pivot rather than bind as they navigate the corner. This is why you can’t simply heat and bend a standard straight track.

For more detail on installation, see our installation guide for electric curtain tracks.

The Silent Gliss Autoglide 5100 — Our Top Pick for Bay Windows

For the vast majority of domestic bay windows in the UK, the Silent Gliss Autoglide 5100 is the right answer.

Bay window specifications at a glance

• Bends: Up to 2 bends per track (angle or curve)
• Minimum bend radius: 250mm for curve bends
• Maximum curtain weight: 25kg straight; 15kg when bent
• Maximum total track length: 6m (including all sections of a bay)
• Power: Mains plug-in — no electrician required
• Control: Wireless wall switch, remote control, or timer

Why it works so well in bays

The 5100 is bent to your exact measurements during manufacture. When you order, you supply the dimensions and angles, and the track arrives pre-formed. The plug-in power supply means no electrician is needed — a significant practical advantage for bay window installations.

The 5100 is fully compatible with the Silent Gliss Wave heading system, which is particularly advantageous for bay windows. Wave curtains use evenly spaced runners to create deep, uniform folds that move in a smooth ripple around bends.

See real-home installations on our Autoglide 5100 inspiration page, and our full product guide at A Guide to the Silent Gliss Autoglide 5100.

One important limitation

The 5100 is limited to two bends per track. For most three-sided bay windows, this is exactly what you need. But for a five-sided bay with four angle changes, a single 5100 track won’t cover the full run. In that case, read the section below on the 5600, or contact us to discuss your configuration.

How to Measure Your Bay Window for an Electric Curtain Track

Accurate measuring is the single most critical step. For a full walkthrough with diagrams, see our dedicated measuring guide. The key steps for a bay window are:

1. Decide on your fixing position. Face-fixing to the wall, top-fixing into the ceiling, or fitting inside a recess? For a bay, ceiling mounting typically gives the cleanest result.
2. Measure each section independently. Do not measure in a single sweep. For a three-sided box bay, measure the left return, centre section, and right return separately.
3. Record the angle at each bend point. Use a protractor or digital angle finder. Common bay angles are 90°, 120°, and 135°.
4. Add your return allowances. Extend the track 100–150mm past the edge of the window on each side so curtains stack clear of the glass.
5. Check your total track length. Add all sections plus returns to confirm you’re within the 5100’s 6m maximum.
6. Double-check your bend radius if it’s a bow window. Confirm the radius is at least 250mm for the 5100.

If uncertain, take photos and send them to us — we help customers with bay window dimensions every week.

Bay Window Configurations: Which Setup Works for You?

Three-sided box bay (square bay)

The most common configuration in UK terraced and semi-detached houses. Two 90° corners. A single 5100 track with two angle bends covers the full width. Centre-opening curtains are the standard choice.

Five-sided angled bay

Found in Victorian and Edwardian properties, with four angle points typically at 135° each. A single 5100 won’t cover a five-sided bay (limited to two bends). Options include two separate 5100 tracks, a 5600 with unlimited bends, or covering only the centre three sections.

Bow window (curved bay)

A continuously curved window with no distinct angle points. Requires a curve-bent track rather than angle bends. The 5100 handles curve bends with a minimum radius of 250mm. Wave curtains look particularly good on bow windows.

Oriel and projecting bay

Some bay windows project from an upper storey. These often have restricted ceiling space, making wall-fixing the only practical option. Usually still within the 5100’s two-bend limit.

What About the Silent Gliss 5600 for Bay Windows?

The Silent Gliss 5600 is the professional-grade option. For most domestic bays it’s more than needed, but in certain situations it’s the right tool.

When to choose the 5600 over the 5100

• More than two bends. The 5600 supports unlimited bends per track.
• Heavier curtains. Handles up to 65kg at a 10m run.
• Longer runs. Up to 10m total track length.
• Commercial installations. Hotels, restaurants, and offices typically specify the 5600.
• Tighter curve radius. The 5600’s minimum is 200mm vs 250mm for the 5100.

The trade-off: the 5600 requires a hardwired mains connection (electrician needed) and sits at a higher price point. Get in touch if unsure which is right.

A note on the Silent Gliss Metropole

The Silent Gliss Metropole is a popular curtain pole — but the electric Metropole cannot be bent. It is only available as a straight track. The manual Metropole can be bent for bay windows, but is not motorised. If you want motorised curtains in your bay, you need the 5100 or 5600.

Pricing for Bay Window Electric Curtain Tracks

Bay configurations don’t add a significant premium — bending is part of the manufacturing process. As a rough guide for the Silent Gliss Autoglide 5100:

• Compact three-sided bay (2.5–3m total): use the online configurator for exact pricing
• Wider bay (3.5–4.5m total): price scales with total track length
• Larger bays (5–6m): approaching the 5100’s maximum, so pricing reflects the full specification

These figures are for the track system. Curtains, fitting, and additional controls are separate. Browse full pricing on our electric curtain tracks page.

Installation Tips for Bay Window Tracks

Our full installation guide covers the process in detail. These tips are specific to bay windows.

Face-fix vs. top-fix

Face-fixing (wall-mounted) is the more common approach. Top-fixing (ceiling-mounted) creates a cleaner finish and is preferred when the ceiling extends into the bay area.

Recess fitting

Deeper bay windows can have the track fitted within the window reveal for a very tidy appearance. The constraint is ceiling height within the recess.

Corner bracket positioning

Ensure you have a bracket within 50–75mm of the apex of each bend on both sides. Unsupported bends will flex under load.

Cable routing

The 5100’s cable typically runs along the track top and down the wall behind the curtain stack-back area. Plan the route to a socket before fitting brackets.

DIY vs. professional

A confident DIYer can install a 5100 bay window track successfully. Watch our installation videos to judge whether it’s within your comfort zone.

Frequently Asked Questions

Can any electric curtain track be bent for a bay window?

No. Only tracks designed for bending should be used. The 5100 and 5600 are both purpose-built for bay windows. The electric Metropole cannot be bent.

How many bends can a Silent Gliss 5100 have?

A maximum of two. For bays with more than two angle changes, you need the Silent Gliss 5600 (unlimited bends) or two separate 5100 tracks.

Do I need an electrician?

Not for the 5100 — it plugs into a standard socket. The 5600 requires hardwired mains.

What’s the maximum width for a bay window track?

5100: 6 metres total. 5600: 10 metres. Most domestic bays fall well within 6m.

Will my curtains hang properly around the bends?

Yes, provided the track is manufactured to your angles. We recommend wave-headed curtains for the neatest result around bends.

How do I control the curtains?

Same as any motorised track. Wall switch, remote, timer, or smart home. See our guide on controlling electric curtains.

Can I get a quote for my specific bay window?

Yes — and we encourage it. Send us your measurements and photos and we’ll confirm the right product, configuration, and price.