A baseboard element including a nose portion, a riser portion coupled to the nose portion, and a wall groove portion coupled to the riser portion. The nose portion includes a nose bottom section and a nose face section. The riser portion includes a riser section approximately perpendicular to the nose bottom section. The nose portion is positioned only on a first side of the riser section, and the wall groove portion is positioned only on a second side of the riser section, the second side opposite the first side. The nose bottom section comprises a nose bottom edge that is located at a terminal end of the nose bottom section and that is located closer to a plane defined by the riser section than the nose face section is to the plane. Other embodiments are also provided.

A flexible inside corner trim piece is formed with concave depressions at hinge portions where wings attach to the body. The trim piece can be formed such that wings and a top cap lay flat in plane perpendicular to body or wings and top cap curve at an angle. Hinge portions can be narrow or wide and symmetrical or asymmetrical. The trim piece can be dyed, paintable, or present another decorative surface. The trim piece can include embedded lighting.

A wallboard-fastening device secures first and second wallboards to a framing member without fasteners passing through the wallboards. The device includes first, second, and third framing panels joined along lengthwise edges to form a three-sided cup sized to fit around the framing member, first and second flat-spring flanges joined along lengthwise edges to form a front seam, and a channel-dividing panel joined lengthwise to the front seam and to the second framing panel to form first and second channels that receive the first and second wallboards. The flat-spring flanges flex to exert restoring forces on the wallboards that push the wallboards against the second framing panel. The device may be configured for edge joints, outside-corner joints, and inside-corners, and thus may be combined for any type of wallboard installation, including both parallel and perpendicular applications.

A process for covering, protecting and providing access to mate lines during building construction comprising the steps of preparing a vertical and horizontal mate line closure flap, carrying out a vertical and horizontal mate line access process, carrying out a vertical and horizontal mate line closing process, repeating the vertical and horizontal mate line access and closing processes as required, and carrying out a vertical and horizontal mate line sealing process to complete the building weatherization.

A composite structural board having a structural board and a water-resistant barrier (WRB) sheet, and a wall system comprising same, wherein a face of the structural board is discontinuously attached to the inner face of the WRB sheet solely by a first adhesive, the WRB sheet fully covering the face of the structural board; wherein the unattached areas between the face of the structural board and the inner face of the WRB sheet define paths by which a liquid can move between the face of the structural board and the inner face of the WRB sheet; in some instances the WRB sheet material extends beyond at least one edge of the structural board forming a WRB sheet flap.

A system for sealing a space defined between a modular wall and a permanent structure includes a sealing material connected to the permanent structure and the modular wall and spanning the space defined therebetween. The sealing material is configured to transform from an expanded state to a recovered state in response to a stimulus to form a seal. The stimulus can be, for example, heat, whereby heating the sealing material at or above the transition temperature for the sealing material causes the sealing material to transition from the expanded state to the recovered state.

A process for covering, protecting and providing access to mate lines during building construction comprising the steps of preparing a vertical and horizontal mate line closure flap, carrying out a vertical and horizontal mate line access process, carrying out a vertical and horizontal mate line closing process, repeating the vertical and horizontal mate line access and closing processes as required, and carrying out a vertical and horizontal mate line sealing process to complete the building weatherization.

A process for covering, protecting and providing access to mate lines during building construction comprising the steps of preparing a vertical and horizontal mate line closure flap, carrying out a vertical and horizontal mate line access process, carrying out a vertical and horizontal mate line closing process, repeating the vertical and horizontal mate line access and closing processes as required, and carrying out a vertical and horizontal mate line sealing process to complete the building weatherization.

A cover for a corbel that may be incorporated into a precast concrete structure is provided having a shell with an interior and an exterior, triangular sides and a bottom extending between the two sides. The opening in the cover is defined by a perimeter, with a first section of the perimeter lying in a first plane and a second section of the perimeter lying in a second plane. The intersection of the first plane and the second plane forms a right angle. The first section of the perimeter may be attached to the base of the ledge component of the corbel, and the second section of the perimeter may be attached to the back plate of the ledge or the mount plate.

A baseboard element including a nose portion, a riser portion, and a wall groove portion coupled to the riser portion. The nose portion includes a nose bottom section and a nose face section. The riser portion includes a riser section extending approximately perpendicular to the nose bottom section and a riser bend coupled to the nose portion. The riser section is substantially planar and defines a plane. The nose portion is positioned only on a first side of the plane defined by the riser section, and the wall groove portion is positioned only on a second side of the plane, the second side opposite the first side. The nose bottom section comprises a nose bottom edge at a terminal end of the nose bottom section. No structure of the baseboard element extends beyond the terminal end of the nose bottom section from the terminal end. The nose bottom edge of the nose bottom section is either approximately at the plane or closer to the plane than the nose face section is to the plane. Other embodiments are also provided.