can someone please tell me how a glass sliding door works? or what type of glass is used ?
Hello, if you go to the below links, they provide you with a lot of information about windows and doors.
http://www.build.com.au/home-design-guides/windows
http://www.build.com.au/home-design-guides/doors
As to what glass is used depends on the situation regarding the need for energy saving, exposure to the sun and general safety requirements.
We suggest you visit a window/door supplier showroom and they can take you through the options.