Fire resistant vacuum insulating glazing

A fire resistant vacuum insulating glazing assembly comprising:

• i. at least one vacuum insulating glazing unit comprising:
• a. a first glass pane, GP1, having an inner pane face and an outer pane face and a second glass pane, GP2, having an inner pane face and an outer pane face;
• b. a set of discrete pillars positioned between the first and second glass panes, maintaining a distance between the first and the second glass panes;
• c. a hermetically bonding seal sealing the distance between the first and second glass panes over a perimeter thereof;
• d. an internal volume, V, defined by the first and second glass panes and closed by the hermetically bonding seal;
• wherein there is a vacuum of absolute pressure of less than 0.1 mbar;
• and wherein the inner pane faces face the internal volume, V;
• and
• ii. a third glass pane, GP3, having an inner pane face and an outer pane face,
• and
• iii. at least one intumescent glazing unit comprising:
• a fourth glass pane, GP4, having an inner pane face and an outer pane face,
• a layer of intumescent material positioned between the inner pane faces of said third and fourth glass panes GP3 and GP4;
• and
• iv. a circumferential spacer frame positioned between the outer pane face of the second glass pane GP2 and the outer pane face of the third glass pane GP3 over a perimeter thereof, and maintaining a distance there between and,
• wherein the circumferential spacer frame, the outer pane face of the second glass pane GP2, and the outer pane face of the third glass pane GP3 define an internal space, Sp.