What are the different types of bay window styles and designs?

House in Wetherby with Sash windows and bespoke panelling and pilasters by Patchett Joinery

Projecting bay windows extend any room, create extra space, let in more natural light, give extra space for seating and provide panoramic views. They are a common feature of many British-built houses, particularly from the 1930s. Bay windows can also add character to houses, bedrooms and living rooms can be turned into unique seating nooks. For bathroom bay windows, baths can be seated underneath for picturesque views. The extra space created by bay windows usually adds value to your home.

Bay window installation requires extra skill and care. Luckily Patchett Joinery have a talented team of fitters who have a wealth of experience in installing all types of bay window.

Timber is the perfect material for bay windows. Wooden bay windows are in keeping with the original look and feel of many period properties, perfect for Listed Buildings and homes in conservation areas in the UK. Timber is also the most environmentally friendly material for windows, with all Patchett Joinery timber FSC certified.

Bay windows come in a range of different styles and designs and can be manufactured with both sash and casement windows.

Splay Bay Window

Splay bay windows are usually made with three casement or sash windows or can be manufactured to be a larger bay window with extra sections. Each window is separated by shaped posts to a particular angle (usually the same angle as gutter sections). Canted bay windows or splay bay windows are the most common type of bay window.

Splay bay window with three sash windows and three radiators with a view of a large field on a summers day
Splay Bay window with Spiral Balance Sash windows
Georgian manor house with timber Georgian style sash windows
Georgian style manor house with Splay Bay windows

Bow Bay Window

Bow bay windows are curved on plan and can be made with curved glass to follow the shape of the property or to protrude and create their own curved shape. Curving bay windows were used widely during the Georgian period and they are still a popular choice today.

Bespoke bay window with curved glass
Bespoke Bow Bay window with curved glass

Segmented Bow Bay Window

Segmented bow bays have a more angled appearance than a completely curved bow bay window. This gives more freedom when creating the shape of the window as curved glass does not need to be used. Segmented bow bays can be crafted using both timber Sliding Sash and Casement windows.

Curved bay window with Heritage Flush casement windows
Segmented Bow Bay window

Square Bay Window

Another type of bay window is a square bay or box bay window. Square bay windows have windows put together in a box shape with a flat front and sides with two square posts. The most popular formation for square bay windows is to have windows at either side and at the front of the square shape. However, it is also possible to have a square bay with shorter sides and opening windows just at the front of the bay window.

Square bay window crafted from timber at the Cairn Hotel Harrogate
Square Bay window with decorative crucifix bars
Square bay with timber box sash windows
Box Bay window with Weights and Pulleys Sash windows

Oriel Bay Window

Oriel bays have two windows with one shaped post creating a semi-hexagonal or rectangular shape. Traditionally oriel windows extend from the wall but don’t reach the ground floor.
Oriel windows date back to the late Gothic and Tudor period in Britain and were a way of letting in more daylight, with the same size reveal.

There are many benefits of oriel windows but they largely add to the character and charm of a property whilst creating a unique space within the home.

Decorative designs for all types of Bay Window

All types of bay window can also be decorated with shaped bars including Georgian bars and crucifix bars, and decorative glass such as coloured glass and diamond leaded glass.

Whether you are developing a new build with box bay or oriel bay windows, redeveloping a 1930s property with splay bay windows or need a replacement double-glazed bay window, updating the draughty and worn timber windows – Patchett Joinery are on hand to deliver the best possible service and the highest quality bay windows.

Spherical bow bay window in 1920s style architecture
Segmented Bow Bay window with crucifix bars
House with a protruding square bay window with Georgian bars
Protruding square bay window with Georgian bars
Victorian style villa with splay bay windows
Victorian style villa with concealed trickle ventilation splay bay windows
Large 1940s style house with bespoke wooden panelling
Bay windows with bespoke wooden panelling
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