Abstract: Window wall and curtain wall mullion or transom structures, members, systems and methods including an insulating component covering substantially an entirety of an outer side of a metal structural segment where the component is connected to a metal structure of the mullion or transom via an interlocking connection, the component connected to the metal structure by clamping the component to the structure with a clamp where the clamp is secured by a fastener in a spaced relationship with respect to the component.

Abstract: Methods, structures and systems for environmental isolation of metal window, transom and mullion surfaces, including in one aspect a metal frame structure configured to receive an operable window, the frame structure having a first thermally insulated polymer component connected to a side of the frame structure at a side wall and spanning a total width of the side wall, and an operable window having a second thermally insulated polymer component connected to a sash assembly, the window configured to close to a position defining a first gap between the second thermally insulated polymer component and the first thermally insulated polymer component and a second gap between the sash assembly and the frame structure. In one aspect at least one seal is positioned in the first gap and abutting both the second component and the first component and at least one seal positioned in the second gap and abutting both the sash assembly and the frame structure to provide improved insulation effectiveness.

Abstract: Window wall and curtain wall mullion or transom structures including a component made of a thermally insulating material covering substantially an entirety of an outer side of a metal structural segment where a first fastener passing through the metal structure and into the component is oriented generally parallel to the outer side or parallel to at least one outward facing surface of the metal segment. The insulating component includes a first slot and a second slot configure to receive fasteners where the slots are oriented generally perpendicularly. The component is devoid of penetrations passing through the component to the structure.

Abstract: A curtain wall mullion or transom including a unitary component made of a thermally insulating material bonded to a metal structural segment or fastened, from the inside-out, to an outer side of the metal segment such that a stem of the component extends into a pocket defined by panels of a curtain wall system. The component may be a reinforced fiberglass polymer component and bonded to the metal segment with an adhesive and may isolate the metal structure from the atmosphere outside the curtain wall and may include a seal receiver which abuts a panel of the curtain wall. The metal segment may be made of steel or aluminum or other metal. A pultrusion method is used to make the fiberglass component to have a profile configured to cover an entirety of an outside of the mullion or transom and to have a pair of receivers for receiving seals to abut against panels of the curtain wall.