A fenestration assembly includes a fenestration frame having a frame core. The frame core includes a core exterior face and a a core interior face. A core wall of the frame core includes filament reinforced polymer, and the core wall extends between the core exterior face and the core interior face. One or more core cavities are within the frame core and surrounded by the core wall. At least one insulation scaffold is seated within the one or more cavities. The insulation scaffold includes one or more scaffold walls and scaffold cavities bordered by the one or more scaffold walls. Engagement feet are coupled with the remainder of the insulation scaffold, and the engagement feet are engaged against the core wall.

Disclosed is a flame-retardant insulation bar manufactured by extruding an insulation composition including any one base resin selected from the group consisting of polyamide, polyurethane, polyester, and combinations thereof, a reinforcing agent, a flame retardant, and an additive.

Disclosed is a flame-retardant insulation bar manufactured by extruding an insulation composition including any one base resin selected from the group consisting of polyamide, polyurethane, polyester, and combinations thereof, a reinforcing agent, a flame retardant, and an additive.

A structure for blocking heat transfer through a thermal bridge of a building, includes an inner visual glass curtain wall, an outer visual glass curtain wall, an indoor metal frame, an outdoor metal frame, an outer decorative metal cover, a first thermal break strip, a second thermal break strip, a first nylon thermal break block and a second nylon thermal break block. The first thermal break strip, which is located in contact with the outdoor metal frame, the indoor metal frame, the first nylon thermal break block and the second nylon thermal break block, is an aerogel thermal insulation blanket. The second thermal break strip, which is located in contact with the indoor metal frame, the second nylon thermal break block, the outer decorative metal cover and the inner visual glass curtain wall, is another aerogel thermal insulation blanket.

A structure for blocking heat transfer through a thermal bridge of a building, includes an inner visual glass curtain wall, an outer visual glass curtain wall, an indoor metal frame, an outdoor metal frame, an outer decorative metal cover, a first thermal break strip, a second thermal break strip, a first nylon thermal break block and a second nylon thermal break block. The first thermal break strip, which is located among the outdoor metal frame, the indoor metal frame, the first nylon thermal break block and the second nylon thermal break block, is an aerogel thermal insulation blanket. The second thermal break strip, which is located among the indoor metal frame, the second nylon thermal break block, the outer decorative metal cover and the inner visual glass curtain wall, is another aerogel thermal insulation blanket.

Devices, systems, and methods related to a fenestration unit are described herein. The fenestration unit may include a frame including a plurality of frame members, wherein the plurality of frame members includes an upper rail member, a lower rail member, a first stile member, a second stile member, the lower rail member including two parallel metallic extrusions a space defined therebetween and a thermal break coupled to the lower rail member and located within the space. The thermal break may include a solid body of thermally insulating material defining a first side portion, a second side portion, and an intermediate portion between the first side portion and the second side portion, the solid body of thermally insulating material being asymmetrical about an X-Y plane.

A fenestration assembly includes a fenestration frame having a frame core. The frame core includes a core exterior face and a a core interior face. A core wall of the frame core includes filament reinforced polymer, and the core wall extends between the core exterior face and the core interior face. One or more core cavities are within the frame core and surrounded by the core wall. At least one insulation scaffold is seated within the one or more cavities. The insulation scaffold includes one or more scaffold walls and scaffold cavities bordered by the one or more scaffold walls. Engagement feet are coupled with the remainder of the insulation scaffold, and the engagement feet are engaged against the core wall.