Bi-folding doors are a very space-efficient entrance/exit solution. Traditional doors swing directly inwards or outwards. Not only does the full width of the door stick out into the room or the space just outside of your home, but it also requires a clear route throughout its swing. If any object is in the way, such as a pair of shoes or a plant pot, this will prevent it from opening fully and this can be a pain. Because they fold, and because they slide within the door frame rather than swinging outwards, bi-fold doors do not require as much clearance in order to open and close fully. This is convenient for just about every kind of home, but especially for those with a lack of space or where you want to make use of the area immediately surrounding the door.
A good-quality folding door will last for a long time and provide you with a lengthy service life before eventually needing to be replaced. However, cheap bi-fold doors can be problematic, as they have more moving parts and more intricate and complex mechanisms than standard doors. Nonetheless, good, well-made uPVC bi-fold doors will use high-quality materials and manufacturing techniques to provide a door that will last a long time.