A building façade element embodied as an insulating glass unit includes at least one first and one second glass pane, at least one glass spacer consisting of glass, which is connected to each glass pane by at least one sealant, at least one other spacer which is gas-tight or comprises a gas-tight layer and is connected to each glass pane by at least one second sealant, and at least one joining region for a glass spacer and another spacer. The at least one glass spacer, the at least one other spacer and the glass panes form a closed inner chamber that does not affect the visual appearance. To this end, the at least one joining region is closed by a third sealant in a gas-tight manner, with the sealant containing butyl and being guided over the joining region.

A fenestration system includes a frame defining a sealing slot; a pane assembly assembled with the frame, the pane assembly defining an edge; a gap defined between the frame and the edge; and a fin seal defining a connector portion and a fin portion extending from the connector portion, the connector portion engaging the sealing slot, the fin portion extending across the gap and abutting the edge, the fin portion tapering in thickness between the connector portion and the edge.

A fenestration system includes a frame defining a sealing slot; a pane assembly assembled with the frame, the pane assembly defining an edge; a gap defined between the frame and the edge; and a fin seal defining a connector portion and a fin portion extending from the connector portion, the connector portion engaging the sealing slot, the fin portion extending across the gap and abutting the edge, the fin portion tapering in thickness between the connector portion and the edge.

A spacer is interposed between a pair of glass substrates facing each other. The spacer is disposed in contact with the pair of glass substrates. The spacer includes a center portion having a plate shape or a columnar shape, and both end portions protruding from both end surfaces of the center portion. At least any one of the both end portions has a spherical cap shape, or a spherical zone shape or a truncated conical shape. A radius A of a base portion at each of the both end portions is equal to a radius B of the center portion, or is smaller than the radius B.

A spacer is interposed between a pair of glass substrates facing each other. The spacer is disposed in contact with the pair of glass substrates. The spacer includes a center portion having a plate shape or a columnar shape, and both end portions protruding from both end surfaces of the center portion. At least any one of the both end portions has a spherical cap shape, or a spherical zone shape or a truncated conical shape. A radius A of a base portion at each of the both end portions is equal to a radius B of the center portion, or is smaller than the radius B.

A method of vacuum sealing a sacrificial panel to a structural panel, such as to form a walkway, is disclosed. The method comprises providing a sacrificial panel having a first side and a second, opposing side, providing a plurality of dots, applying the plurality of dots in a spaced relationship onto the first side of the sacrificial panel, applying a double-sided tape about the periphery of the first side of the sacrificial panel, providing a structural panel, placing the structural panel onto the first side of the sacrificial panel, wherein the dots create a gap between the sacrificial layer and the structural layer, and the double-sided tape provides an airtight seal between the sacrificial layer and the structural layer. The method further comprises providing a needle coupled to a vacuum device, inserting the needle into the gap between the sacrificial layer and the structural layer and operating the vacuum device to remove air from the gap between the sacrificial layer and the structural layer.

A laminated vacuum insulating assembly extending along a plane, P, defined by a longitudinal axis, X, and a vertical axis, Z, including: a first glass pane with thickness Z1, an inner pane face and an outer pane face and a second glass pane with thickness, Z2, an inner pane face and an outer pane face; wherein the thicknesses are measured in the direction normal to the plane, with a set of discrete spacers positioned between the first and second glass panes, a hermetically bonding seal sealing the distance between the first and second glass panes over a perimeter thereof; and an internal volume, V, defined by the first and second glass panes and the set of discrete spacers and closed by the hermetically bonding seal and where there is an absolute vacuum of pressure of less than 0.1 mbar; and where the inner pane faces face the internal volume, V.

A window sealing system and method for use in sealing insulating glass units (IGUs) is disclosed herein. The system includes an articulating arm having a plurality of members and arms to allow movement about multiple axes defined by the articulating arm, and a sealant dispensing apparatus releasably couplable to the articulating arm. The sealant dispensing apparatus comprises a pivotable dispensing apparatus for dispensing sealant onto an IGU. The system further including a vision system, coupled to the sealant dispensing apparatus, for monitoring physical properties of the sealant during sealant application.

A window sealing system and method for use in sealing insulating glass units (IGUs) is disclosed herein. The system includes an articulating arm having a plurality of members and arms to allow movement about multiple axes defined by the articulating arm, and a sealant dispensing apparatus releasably couplable to the articulating arm. The sealant dispensing apparatus comprises a pivotable dispensing apparatus for dispensing sealant onto an IGU. The system further including a vision system, coupled to the sealant dispensing apparatus, for monitoring physical properties of the sealant during sealant application.

A fenestration assembly includes a glazing unit includes a pane spacer between exterior and interior panes proximate glazing unit edges. A fenestration frame is coupled around the glazing unit and includes a frame core extending around the glazing unit. The frame core includes a unitary core wall including a composite material that is hollow and extends continuously from a core interior face to a core exterior face. A metal glazing cap is coupled with the frame core. The metal glazing cap having a cap end indirectly engaged with the glazing unit along the interior pane, and the cap end is remote from the pane spacer. Each of the core exterior face, the pane spacer and the metal glazing cap are thermally isolated from each other with the frame core including the unitary core wall.