Why Bay Windows Need a Different Approach

A bay window is one of the loveliest features a British home can offer. It pulls light deep into a room, adds a few precious square feet of floor space and gives you a natural spot for a reading chair, a houseplant or a small desk. It also happens to be one of the most awkward shapes to dress well.

Standard curtains and off-the-shelf blinds rarely sit properly across a bay. The angles mean the fabric either pulls away from the glass, leaving gaps at the sides, or bunches awkwardly at the corners. Add radiators tucked under the sill, deep recesses and windows that are rarely perfectly square, and it becomes clear why made-to-measure is usually money well spent.

Before you choose anything, decide what matters most in that room: privacy from the street, warmth on winter evenings, blocking summer light from a bedroom, or simply keeping the sightline clear. That answer will point you towards blinds, curtains, or a combination of the two.

Measure Carefully and Play to the Shape

Every bay is different, so measure each face of the window individually rather than assuming symmetry. Take the width at the top, middle and bottom of each section, and the drop from your chosen fitting point to the sill, radiator or floor. Older bays are often slightly out of true, and the smallest measurement is the one that matters.

Next, check the practical details. Do the window handles protrude? Is there a sill wide enough to sit a pot on? How much wall sits either side of the bay for curtains to stack back into? A curtain panel needs roughly a third of its width in stacking space when open, so a bay with narrow returns can quickly swallow a room.

For curtains, you will need either a bendy bay track that follows the angles or a bay pole with a return. Multi-sided tracks that can be joined at the corners give a smoother look and let the curtain glide round the bend. Blinds, by contrast, are usually fitted into each face of the bay separately, which is why they suit angled windows so neatly.

Roman Blinds: Neat, Made-to-Measure and Space-Saving

Made-to-measure Roman blinds are the natural choice for bay windows, particularly in kitchens, bathrooms and smaller bedrooms. Because each blind drops flat and folds up in soft horizontal pleats, nothing crowds the room when the window is open. You can fit them inside the recess for the cleanest line, or face-fix them to the window frame or wall if the opening is uneven.

Fabric choice does a lot of the work here. A medium-weight woven fabric with a thermal lining helps hold warmth in during winter and deflect glare in summer, while a blackout lining is worth considering for bedrooms. Lighter linings suit a sunlit south-facing bay but will fade faster, so weigh up how much direct light the window receives before you commit.

Operation matters too. A chain or cord control at the side of each blind is simple and reliable, but the cords from three or four blinds in one bay can look untidy. Consider keeping the controls on the same side of each panel so they run in an orderly line.

Curtains: Warmth, Softness and a Sense of Height

Curtains bring something blinds alone cannot: softness, acoustic dampening and a real sense of cosiness. A generously full curtain, hung from a bendy track set close to the ceiling, will make a bay look taller and the whole room feel warmer. Aim for two to two-and-a-half times the track width in fabric so the folds stay deep and luxurious rather than flat.

Thermal curtains, especially those with an interlining layer, are excellent for older bay windows with single glazing. They cut draughts around the edges and soften street noise. If you want the window to disappear at night, choose a floor-length drop that finishes just above the radiator so heat can still rise into the room.

Heading style changes the look considerably. Pinch pleat and pencil pleat both work well on a bay track and hold a neat shape round the bend. Eyelet curtains are lovely across a straight wall, but they need a pole and will not follow a bay comfortably, so keep them for straightforward windows.

Combining Both for the Best of Everything

Very often the most practical answer is a layered approach. Fit Roman blinds to each face of the bay for daytime privacy and light control, then hang curtains across the front of the bay for evening warmth and a finished, dressed look. In a small space, sheer voiles on one section can soften the view without blocking light at all.

This combination is especially useful in living rooms, where you want to open the blinds in the morning and close the curtains at dusk without fussing with every panel. Keep colours and textures related — a warm neutral linen blind with a heavier wool-mix curtain, for instance — so the layers feel deliberate rather than crowded.

Small Details That Make the Whole Bay Work

• Sill clearance: check blinds will clear window handles, taps or a radiator top when fully lowered.
• Cord safety: keep blind cords tidied with cleats or tensioners, particularly in homes with children or pets.
• Radiators: never hang a long curtain directly over a radiator. Choose a sill-length drop instead.
• Stacking room: leave enough wall either side of the bay for curtains to sit back without covering the glass.
• Colour: echo a shade from the room's palette so the window dressing looks built in rather than added on.
• Cleaning: Roman blinds in a bay are far easier to vacuum regularly than curtains, which matters in busy rooms.

Take your time over the measurements, choose made-to-measure where you can, and a bay window will reward you with the warmest, brightest corner in the house.