Abstract: A collapsible structural frame for forming a soffit having a multi-planar surface. The collapsible structural frame includes a first frame portion configured to receive a first sheet of building material, a second frame portion configured to receive a second sheet of building material, the second frame portion extending along a second reference plane, and a third frame portion configured to receive a third sheet of building material.

Abstract: A collapsible structural frame configured to provide a structure to which building material sheets are attached to form a surface. The frame includes a first frame portion that corresponds to a first portion of the surface and is configured to receive a first sheet of the building material and a second frame portion that corresponds to a second portion of the surface and is configured to receive a second sheet of the building material. A pivoting mechanism attaches the second frame portion to the first frame portion and has a pivoting axis. The pivoting mechanism permits the second frame portion to rotate about the pivoting axis relative to the first frame portion from an undeployed state to a deployed state. A locking mechanism may fix a relative position of the first frame portion and the second frame portion in the deployed state.

Abstract: An acoustical building panel is disclosed that comprises a fibrous panel comprising: a central portion having a first major surface; a perimeter portion surrounding the central portion; a recess press-formed into the perimeter portion, the recess circumscribing the first major surface and comprising a recess floor surface; a second major surface opposite the first major surface; and side edge surfaces that define a perimeter of the fibrous panel and extend from the second major surface to the recess floor surface.

Abstract: An acoustical building panel is disclosed that comprises a fibrous panel comprising: a central portion having a first major surface; a perimeter portion surrounding the central portion; a recess press-formed into the perimeter portion, the recess circumscribing the first major surface and comprising a recess floor surface; a second major surface opposite the first major surface; and side edge surfaces that define a perimeter of the fibrous panel and extend from the second major surface to the recess floor surface.

Abstract: Described herein is a coating composition suitable for application to a panel. The coating composition exhibits stability upon exposure to high temperatures. The coating composition comprises calcium carbonate; titanium dioxide; opacity pigment composite comprising TiO2 encapsulated within a precipitated calcium carbonate shell; calcined diatomaceous earth; aluminum hydroxide; and vinyl acrylic polymer. Described herein are also building panels coated with the coating composition and methods of their formation.

Abstract: Described herein is a building system comprising: a plurality of support members each comprising a support surface, a plurality of first building panels secured to the support surface of the plurality of support members, each of the plurality of first building panels comprising a non-porous body, a plurality of second building panels secured to the plurality of first building panels by an adhesive and a first plurality of mechanical fasteners, each of the plurality of the second building panels comprising a porous body.

Abstract: Described herein is a method for forming a monolithic surface in a ceiling system, the method comprising overlapping a first facing sheet and a second facing sheet to create an overlap region, each of the first and second facing sheets having a first major surface opposite a second major surface and side surface extending between the first and second major surfaces, wherein the lower surface of the first facing sheet contacts the upper surface of the second facing sheet within the overlap region, and running a blade of a cutting tool along the overlap region such that the blade extends through the first and second facing sheets at a cutting angle that is oblique to the first major surface of the first facing sheet within the overlap region.

Abstract: a) providing a collapsible structural frame in a folded state, the collapsible structural frame configured to provide a structure to which building material sheets are attached to form a surface; b) converting the collapsible structural frame from the folded state to a deployed state and fastening the collapsible structural frame to a preexisting support; and c) fastening at least a sheet of building material to the surface of the collapsible structural frame. 42. The method according to claim 41, wherein step c) comprises fastening a first sheet of building material to a first frame portion of the collapsible structural frame and fastening a second sheet of building material to a second frame portion of the collapsible structural frame, whereby the first and second sheets of building material are not parallel. 43. The method according to any on of claims 41 to 42, wherein a fastener locks the collapsible structural frame into the deployed state.

Abstract: Described herein is a method for forming a monolithic surface in a ceiling system, the method comprising overlapping a first facing sheet and a second facing sheet to create an overlap region, each of the first and second facing sheets having a first major surface opposite a second major surface and side surface extending between the first and second major surfaces, wherein the lower surface of the first facing sheet contacts the upper surface of the second facing sheet within the overlap region, and running a blade of a cutting tool along the overlap region such that the blade extends through the first and second facing sheets at a cutting angle that is oblique to the first major surface of the first facing sheet within the overlap region.

Abstract: Described herein is a method for forming a monolithic surface in a ceiling system, the method comprising overlapping a first facing sheet and a second facing sheet to create an overlap region, each of the first and second facing sheets having a first major surface opposite a second major surface and side surface extending between the first and second major surfaces, wherein the lower surface of the first facing sheet contacts the upper surface of the second facing sheet within the overlap region, and running a blade of a cutting tool along the overlap region such that the blade extends through the first and second facing sheets at a cutting angle that is oblique to the first major surface of the first facing sheet within the overlap region.

Abstract: An acoustical building panel is disclosed that comprises a fibrous panel comprising: a central portion having a first major surface; a perimeter portion surrounding the central portion; a recess press-formed into the perimeter portion, the recess circumscribing the first major surface and comprising a recess floor surface; a second major surface opposite the first major surface; and side edge surfaces that define a perimeter of the fibrous panel and extend from the second major surface to the recess floor surface.

Abstract: Described herein is a method for forming a monolithic surface in a ceiling system, the method comprising overlapping a first facing sheet and a second facing sheet to create an overlap region, each of the first and second facing sheets having a first major surface opposite a second major surface and side surface extending between the first and second major surfaces, wherein the lower surface of the first facing sheet contacts the upper surface of the second facing sheet within the overlap region, and running a blade of a cutting tool along the overlap region such that the blade extends through the first and second facing sheets at a cutting angle that is oblique to the first major surface of the first facing sheet within the overlap region.