Bay window
A bay window is a multi-panel window that projects outward beyond the external wall of a building. This outward projection forms a bay or interior recess and is supported by a sill height wall. Bay windows are typically rectangular or polygonal, and the most common internal angles are 90°, 135° and 150°.
Bay windows are a prominent feature of Victorian domestic architecture but were originally incorporated into designs during the English Renaissance period as a means of making a room appear larger, providing better views and admitting more natural light than a window which was flush with the wall line.
The interior recess created by a bay window can be used for storage by enclosing the lower area, or as a window seat with the addition of cushions and other soft furnishings. Alternatively, it can be used as a space to display decorative items, plants, and so on.
However, a bay window can require more heating or cooling to maintain a comfortable internal temperature due to the increased surface area of glazing. Consideration must also be given to the structural stability of the building foundations, as they must be capable of supporting the protruding windows and roof above.
In modern architecture, bay windows underwent a revival to become a characteristic feature of the Chicago School. Today, bay windows can be found in all types of domestic architecture as well as in apartment buildings.
There are several variations, including:
- Canted: A bay window with a flat front and angled sides.
- Bow: A bay window which is curved or arc-shaped.
- Oriel window: This is a bay window found on an upper floor, typically supported from below by a corbel or bracket. This type of window allows the floor space to be extended without the dimensions of the foundation needing to be changed.
- Mashrabiya: Highly decorative enclosed balconies that are characteristic of Arab architecture.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Listed despite problems with its design.
Zen and the art of cycling exploration.
Design Council Homes Taskforce launched
To support government 1.5 million homes target within UK climate commitments.
The story of this knowledge quarter building.
In ecology, in hydrology, in biology and in architecture.
Creating environments that promote physical, mental, and social well-being.
UK cases of neutral current diversion
Research project looks for example contributions.
Overstocking and macro-economics cause a decline.
The 2024 update of the Common Assessment Standard
Demonstrating organisational capability’ to fulfil roles under the Building Safety Act.
56 recommendations for a better built environment
Published by the CIC ahead of the King’s Speech.
SkillELECTRIC Top 8 Competitors Named
in annual search for the UK’s best student electrician.
CIOB Diversity and Inclusion technical information sheet
Step-by-step guide on implementing D and I practices.
Conservation and the Indian City. Book review.
Reversibility in conservation ethics
Learning from painting conservation.
Where It's AT Podcast launched!
New CIAT Architectural Technology Podcast goes live.