These are becoming very popular now, with a lot of people using them to bring the outside in. We would recommend the use of Accoya for this type of door, due to the structure and integrity of this type of wood and to eliminate future problems.
Bi-folding doors can come in multiplies of configurations. The tracking system we use is of a good strong quality design to ensure a smooth gliding system and fantastic levels of security.
With large areas of glass, it is important to think about the heat loss, we would recommend a high energy efficient double or triple glazed unit, offering exceptional levels of heat retention.