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Bay window installation, across West Yorkshire

A bay window is the signature of thousands of Yorkshire streets. The 1930s semi, the Victorian terrace, the Edwardian villa, even the 1970s estate home. When the bay is right, it lifts the whole front of the house. When it’s wrong, or tired, or badly replaced, the whole property looks off.


Bay window installation across West Yorkshire, from full structural replacements on 1930s frontages to slim aluminium bays on contemporary renovations.

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Bay window styles we fit

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Square bay

Two or three sections joined at right angles. The standard 1960s and 1970s bay style. Clean lines, straightforward to replace, and still the most common bay on Yorkshire estates.

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Splayed bay (angled)

Three or five sections joined at angles, typically 135°. The most common style on pre-war Yorkshire housing. 1930s semis across Wakefield, Leeds and Bradford almost all have splayed bays.

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Victorian bay (curved or canted)

The multi-section curved bay, usually with a stone or brick sill extending into the front garden. Found on Victorian terraces across Harrogate, Ilkley, Wetherby and central Leeds. Replacement is more detailed because the original brick or stone structure has to be preserved.

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Box bay

A rectangular bay that projects square from the wall, flat-topped. Common on upper floors and in contemporary builds.

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Bow window

A curved bay with multiple narrow sections forming a gentle arc. Less common in Yorkshire than the splayed or Victorian bay, but we fit them on request.

A bay window isn’t just a bigger window. It’s a structural feature. Replacing one properly means:

Load bearing is handled properly — the lintel above the bay carries weight from the wall above, and we make sure that load is supported throughout the replacement.

The roof or top detail is watertight — bay window roofs are often where leaks start. We inspect, repair, and reseal as part of the job where needed.

The cill and brickwork are protected — old stone and brick cills can crack if the frame is pried out roughly. Experienced installers don’t rush this.

The interior reveal looks right when it’s done — plaster lines, skirting returns, and curtain pole positions all need consideration.

Over 1,000 projects means we’ve seen every variation of bay that West Yorkshire has produced.

Materials and finishes

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uPVC bay windows

The standard choice for most replacements. Energy efficient, low maintenance, and available in any colour or woodgrain finish. A-rated double glazing as standard, 40mm triple glazing available.

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Aluminium bay windows

Slim sightlines, maximum glass area, and a contemporary look. We fit aluminium bays on modern builds and high-end renovations.

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Flush sash bay for period homes

If you live in a Victorian terrace in Harrogate and the existing bay is timber, a flush sash profile keeps the heritage look intact.

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Sliding sash bay for Victorian townhouses

Georgian and Victorian townhouses sometimes have sliding sash bays. We replicate these using our uPVC sash range with full vertical travel.

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Adding a bay window where there isn’t one

Some of our customers aren’t replacing a bay, they’re adding one. If you have a flat-front property and you want to introduce a bay, we can handle the structural work as part of the install. This usually involves building control sign-off, a new lintel, and proper tying back into the existing wall.



It’s bigger than a straight replacement, but for the right property it can make a real difference to kerb appeal and the room inside.

Omnia, our premium flush sash range

If you want the design-led version of flush sash, with thinner sightlines, a wider colour palette, and the Veka Omnia system behind it, we fit that too.

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The install

Bay window replacements take anywhere from one to four days depending on size, condition, and whether structural work is needed. Every install is FENSA-signed off and comes with a 10-year guarantee* on most products.

  • Pre-install survey with photos and structural assessment
  • Protection of floors, curtains, and furniture
  • Staged removal to maintain structural support throughout
  • Precise fit with levels and plumb checked at every stage
  • Interior plastering touch-up where needed
  • Final clean-down and walk-through
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Where we fit bay windows

All across West and South Yorkshire. Most of our bay work is in Wakefield, Leeds, Bradford, Harrogate, Huddersfield, Halifax, Barnsley, and the surrounding towns. Victorian bay restorations are concentrated in Harrogate, Ilkley, Saltaire, and central Leeds.

Bay window FAQs

  • How much does a bay window replacement cost?

    It varies widely depending on size, material, glazing, and whether structural work is involved. A straightforward 1930s splayed bay replacement starts much lower than a three-storey Victorian frontage. We’ll give you a proper written quote after a free home survey.

  • What are the standard sizes for a bay window?

    There isn’t one. Every bay we measure is slightly different because the original was built to the brickwork of the property. We order every bay to exact survey measurements.

  • Can you add a bay window where there isn’t one?

    Yes, though it’s a bigger job. Building control sign-off and structural work will be involved.

  • How long does a bay window replacement take?

    One to four days on site, depending on complexity. Straightforward uPVC replacements are usually done in two days.

  • Will a new bay window improve my property value?

    Usually yes, particularly if the existing bay is tired, draughty, or has been badly replaced at some point in the past. Kerb appeal matters, and a well-fitted bay window is one of the most visible improvements a homeowner can make.

Related products

Casement windows 

Aluminium windows

Sliding sash windows

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Start your bay window project