Dormer window
A dormer is a small roofed structure that projects outwards from the main pitched roof of a building. Dormers can be included in the original construction of a building or added on subsequently.
Dormers are becoming more common in homes as they can help create extra headroom in spaces that may otherwise be too small or too low for habitation. They enable the creation of rooms in the roof or loft without needing to construct a new storey. Dormers will typically have dormer windows set into them to allow light and ventilation.
There are a number of different types of dormers including:
Box roof/flat roof: The plane of the roof is horizontal. This type of dormer provides the most space and floor area inside the building.
Gable: These have a gable roof, with the front of the dormer being flat with a pitched roof and vertical sides.
Hip roof: The roof comprises of three sloping panels that meet at the ridge.
Arched/eyebrow: This is similar to the hipped dormer but has an arch or curve which allows it to blend in to the existing roof.
The insertion of dormer windows as part of a loft conversion does not normally require planning permission. However, If the roof space is altered or extended and it exceeds specified limits and conditions, permission may be necessary. It may also be necessary to obtain permission within conservation areas, National Parks, Areas of Outstanding Natural Beauty or the Broads, or if the building is listed.
Dormer windows may require building regulations approval.
[edit] Related articles on Designing Buildings Wiki.
Featured articles and news
BSRIA IAQ topic guide published
Free download of TG 12/2021 available.
Electrotechincal mentors wanted
TESP works with The Youth Group to form skill sharing network.
OpenBuilt supply chain technology in development
Big tech collaborates on platform for the built environment.
Concerns raised over Future Buildings Standard
Letter signed by 21 organisations sent to MHCLG.
The infrastructure planning process
A look at the Government's strategic approach.
Steps to help reduce the spread of infection inside buildings.
Urban exploration and construction
This social media-centred hobby can be both dangerous and illegal.
Millwork wall treatment with a long and illustrious history.
Weekly workplace noise estimator tool
HSE introduces cumulative exposure calculator.
The Edwardians and their houses.
Cut off from civilian life for over 900 years.
Can net zero and levelling-up align?
Gaining green support from the carbon giants.
Medieval passageways with spiritual, transport and economic purposes.
Receive the Designing Buildings newsletter
Click the button to subscribe.
Comments
We appreciate your efforts in writing such a detailed post on Dormer Window, that
would be helpful for every homeowner. The window is done with proper planning and attention to make your house outlook nice.