Fire resistant vacuum insulating glazing

A fire resistant vacuum insulating glazing assembly comprising:

• at least one vacuum insulating glazing unit comprising:
• a first glass pane having an inner pane face and an outer pane face, and a second glass pane having an inner pane face and an outer pane face;
• a set of discrete pillars positioned between the first and second glass panes, maintaining a distance between the first and the second glass panes;
• a hermetically bonding seal sealing the distance between the first and second glass panes over a perimeter thereof;
• 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;
• and
• at least one intumescent unit comprising:
• a layer of intumescent material;
• an intumescent unit glass pane, GPiu;
• and
• an intumescent unit peripheral spacer extending over a perimeter of the intumescent unit glass pane;
• wherein the intumescent unit glass pane and the intumescent unit peripheral spacer define an intumescent unit volume, Vi, encompassing the layer of intumescent material, and
• wherein the layer of intumescent material and the intumescent unit peripheral spacer are facing one of the outer pane faces of the first or second glass pane.