Many of the historic buildings Fergmann Window Solutions Ltd work on have antique glass and therefore any broken panes that require replacing would be replaced using the same type of glass. If modern clear float glass was to be used in these buildings the difference would be very apparent and not in keeping with the history of the building.
There is a variety of antique glass available; “Crown”, “Baltic” and “German Cylinder” to name but a few. There are also less expensive alternatives such as “D Lam” and “D Rest”.
Antique glass has its own unique pattern such as the grain of the glass and the air bubbles.