From a very general point of view, standard doors are associated with two positions: open and closed. The apertures of custom bifold doors can be adjusted as might be needed. This is often why they are employed within patio entrances and similar locations. These doors can be fully unfolded during the more pleasant months of the year and when the temperatures become cooler, they are able to function as a standard door.
A solid conservatory roof can stand up to the harshest of weather conditions and it is nearly impervious to the elements. The same cannot always be said for other options. The use of lightweight and advanced materials ensures that factors such as moisture content and temperature variations will have little effect upon the internal environment. Also, the chances of leaks occurring are virtually eliminated. Solid roofs require little maintenance and as a result, you can spend more time enjoying your conservatory and less time repairing it.