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 construction element can comprise a top portion, comprising a top portion region and a top portion groove located below the top portion region. The top portion groove can be configured to receive a wall material within the top portion groove. The construction element can also comprise a middle portion coupled to the top portion. The construction element can further comprise a bottom portion coupled to the middle portion and comprising a bottom portion groove configured to receive a floor material within the bottom portion groove, a bottom portion bend coupled to and located below the bottom portion groove, and a bottom portion region coupled to the bottom portion bend. Other embodiments are also provided.

A baseboard element including a nose portion that includes a nose bottom section, a nose top section extending approximately parallel to the nose bottom section, and a nose face section extending between the nose bottom section and the nose top section. The baseboard element also can include a riser portion comprising a riser section extending approximately perpendicular to the nose top section, and a riser bend extending between the riser section and the nose top section of the nose portion. The baseboard section additionally can include a wall groove portion comprising a groove front section extending approximately parallel to the riser section of the riser portion, a groove back section extending approximately parallel to the groove front section, a groove bottom bend extending between the groove front section and the groove back section, and a groove top bend extending between the groove front section and the riser section of the rise portion. Other embodiments are provided.

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 comprising a first baseboard element, a second baseboard element, and a spline configured to couple with the first baseboard element and the second baseboard element. Another system comprising a first crown element, a second crown element, and a spline configured to couple with the first crown element and the second crown element. Other embodiments are disclosed herein.

A system comprises a first baseboard element, a second baseboard element, and a spline configured to couple with the first baseboard element and the second baseboard element. Another system comprises a first crown element, a second crown element, and a spline configured to couple with the first crown element and the second crown element. Other embodiments are disclosed herein.

The present invention discloses an improved cyclorama infinity wall kit and installation method. The cyclorama infinity wall kit comprises floor coves, corner bases, wall corners, a plate, and at least one ledge per wall intersection. The prefabricated pieces of the cyclorama infinity wall kit are installed to straight framing lumber installed directly on the walls and floor of a studio at various channel slots.

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.