Described herein is a drywall apparatus including drywall liner. A first gypsum-containing segment is disposed on an internal side of the drywall liner, and a second gypsum-containing segment is disposed on the internal side of the drywall liner such that a groove exists between the first segment and the second segment. The drywall liner connects the first segment to the second segment such that the first segment and the second segment are capable of hinging about a hinge axis parallel to the groove.

A wall panel system includes a first wall panel, a second wall panel, and a joint member that couples the first wall panel to the second wall panel. The wall panel system also includes an upper mounting assembly that couples to the first wall panel and the second wall panel such that the upper mounting assembly pivots with the first wall panel and the second wall panel.

An exemplary foam insulation board includes a plurality of insulation panels hingeably connected by hinged portions. The foam insulation board has a folded configuration and an unfolded configuration. The hinged portions allow the insulation panels to fold flat against each other in the folded configuration. The plurality of insulation panels includes a first insulation panel and a plurality of additional insulation panels, one of which is adjacent to the first insulation panel. The first insulation panel also includes a starter portion that extends beyond at least the adjacent insulation panel of the additional panels.

A wall panel system includes a first wall panel, a second wall panel, and a joint member that couples the first wall panel to the second wall panel. The wall panel system also includes an upper mounting assembly that couples to the first wall panel and the second wall panel such that the upper mounting assembly pivots with the first wall panel and the second wall panel.

In one embodiment, a multiwall sheet can comprise: a first wall; a second wall; an intermediate wall disposed between the first wall and the second wall; a first set of ribs disposed between the first wall and the intermediate wall; a second set of ribs disposed between the second wall and the intermediate wall; a cavity disposed between adjacent ribs; wherein the multiwall sheet is configured to expand and/or collapse when a mechanical force (preferably shear force) is applied to the intermediate wall. Preferably the multiwall sheet has a flexural rigidity of greater than or equal to 10 N/mm.

Described herein is a drywall apparatus including drywall liner. A first gypsum-containing segment is disposed on an internal side of the drywall liner, and a second gypsum-containing segment is disposed on the internal side of the drywall liner such that a groove exists between the first segment and the second segment. The drywall liner connects the first segment to the second segment such that the first segment and the second segment are capable of hinging about a hinge axis parallel to the groove.

An exemplary foam insulation board includes a plurality of insulation panels hingeably connected by hinged portions. The foam insulation board has a folded configuration and an unfolded configuration. The hinged portions allow the insulation panels to fold flat against each other in the folded configuration. The plurality of insulation panels includes a first insulation panel and a plurality of additional insulation panels, one of which is adjacent to the first insulation panel. The first insulation panel also includes a starter portion that extends beyond at least the adjacent insulation panel of the additional panels.

A hybrid structural member for an insulated structural panel includes a core member surrounded on at least two sides by a high-density structural foam. The hybrid structural member may be manufactured by placing a core member in a cavity of an injection mold and surrounding the core member by insulating foam on at least two sides. The core member may be held in place by screws, posts, pins, a vacuum, or other suitable means.

A hybrid structural member for an insulated structural panel includes a core member surrounded on at least two sides by a high-density structural foam. The hybrid structural member may be manufactured by placing a core member in a cavity of an injection mold and surrounding the core member by insulating foam on at least two sides. The core member may be held in place by screws, posts, pins, a vacuum, or other suitable means.

An expandable panel, constructed such that the expandable panel can at least expand in at least one direction, includes a panel having a front face and rear face bordered by side edges, end edges and a thickness dimension extending between the front and rear faces and includes discretely spaced cuts extending from the front face to the rear face or rear to front face. The cuts form bridging members between living hinges and are elongate and extend in a spaced longitudinal manner including at least one cut forming a side of the expandable panel located on one side of the cut, and at least two cuts located on a side of the expandable panel. The at least one cut on side and the other cuts on side together forming at least one pair of lines being substantially parallel, offset mirror images of each other and being intermeshed but not touching.