Sliding doors operate without a hinge – they simply glide along a track instead of swinging open. Sliding doors simply open up by one door sliding over another panel. Sliding doors boast extra large panes of glass that run from the top to the bottom of each of the door panels. Sliding doors can be very efficient insulators – ensuring that your home stays warm in winter and cool in summer. Since sliding doors boast large glass panes, they offer all-year-round views of your garden landscape and any panoramic views beyond – whether they are open or closed.