Bi fold doors concertina in or out to open up a space. They can be closed, partially opened, or fully opened to connect the inside to the outside.
Bifold doors are also a great way to bring flexibility to your interior design - particularly when it comes to how much light, ventilation and privacy you want the space to include.
If your home design incorporates a garden or balcony space, then bifold doors become even more multi-faceted. By installing one as an exterior door, you gain the added benefit of bringing the outdoors into your home, for the ultimate feeling of space and ventilation, during the summer months.