What are the different types of window designs?
Probably the style that comes to mind first when thinking about what a replacement window looks like.
The word casement is actually related to the moving (opening) section which opens outwards. The standard casement window opens from hinges on the left or right. A hopper version will open inwards from hinges on the bottom. An awning version will open outwards from hinges at the top.
When fitted side by side in a single frame, you get a French Window.
Prices for a single, side opening, double glazed, white uPVC casement window sized 1000mm x 1000mm, would be in the region of £200 to £300.
A typical sash window will feature 2 moving panels (casements), 1 set above the other. The sash windows move vertically up and down, one on an inner track, one on an outer. They slide past each other in order to open and therefore you can only have “half the window open” at any point.
Where only one sash moves they are called single-hung, where both move they are referred to as double-hung. In single-hung versions, only the lower sash will move.
The lock for a standard sash window will be in the centre where the two sashes overlap. It is important to have a good quality lock here.
Bay & Bow window designs
The main feature of bay & bow window designs is that they “project” from the house.
Bay windows are usually a 3-faceted projection, within which the 2 side facets set square or at an angle. Typically, the bay itself will extend from floor to ceiling. If you are planning to create a new bay window then it will require a base & a roof, which can make them quite an expensive type of window to “build from scratch”. A replacement bay window set might cost around £1,500 for 3 panels (2500w x 1500h) in white uPVC
On the other hand, a bow window is a “1-sided” curve and can be fitted into an existing opening if the opening is wide enough to work well with a bow design.
Whilst not needing a base & roof like a bay, you will need to consider what you do at the cill & head of the window to weatherproof the installation. You could expect to pay £1,000+ for a 5 section white uPVC bow window.
Tilt and turn windows
A quirky and unique design style, that combines an opening mechanism similar to a standard casement style with the ability to also tilt the same window section inwards for ventilation. Both opening variations can be done using a single multi-function handle.
However, the moving window sections open into the house, which can sometimes cause interference with curtains or blinds, depending on how & where these are fitted to the window area.
One of the plus points of this style is that, because they open inwards, they are easily cleaned from inside the house – very handy for upper floors. They also open really wide and therefore lend themselves well for use as an exit in the event of an emergency.
Other versions also include tilt & turn sash windows or reversible windows. You could expect to pay between £250 to £350 for a 1200mm x 1200mm supply only tilt & turn window in white uPVC or £500 to £550 for a fully fitted 1200mm x 1200mm white uPVC tilt & turn window.
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