Insulated glazing unit comprising solid body seals and methods for producing the same

A method comprising:

• providing a first pane;
• locating and securing solid spacers on the first pane, wherein a first of the solid spacers includes a gas port;
• positioning a second pane on the solid spacers opposite the first pane;
• heating the solid spacers with a source of electromagnetic waves for a duration and at an intensity sufficient to weld the solid spacers to the first pane and the second pane to form a seal joining the first pane and the second pane;
• filling, through the gas port, an intermediate space defined between the first pane, the second pane, and the solid spacers with a fill gas having a lower thermal conductivity than air to produce a gaseous insulative environment in the intermediate space;
• and
• sealing the gas port and thereby hermetically sealing the intermediate space within the first pane, the second pane, the solid spacers, and the gas port to maintain the gaseous insulative environment therein.