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 wall structure having a horizontal base stud, which wall structure has an upper wall panel, and a horizontal base stud, wherein the base stud has openings to allow for liquids to escape in the event of a plumbing leak, and additional openings to allow for air flow from the exterior to the interior of the wall structure.

In one embodiment, 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. In another embodiment, a 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. In another embodiment, a system comprises a crown spline, a baseboard spline, and a wall element configured to be coupled with the crown spline and the baseboard spline. Other embodiments are disclosed herein.

Modular Construction elements are characterized by a variety of profiles and associated interchangeable components and/or inserts. Together, these structures and components allow the end user to incorporate dissimilar or similar materials having a wide range of thicknesses and geometries into a flanged associated with the construction elements and tailored to its particular profile. Through the use of a unique set of interconnection methods and systems, a relatively small set of elements can be arranged to protect the surfaces of a wide array of interior surface treatments and the intersections of those surfaces. Dimensional material can be configured to provide the desired form of intersection and transition type—e.g., horizontally to horizontally, horizontal to vertically, vertical to vertical, vertically to horizontally, and the like—while at the same time creating and maintaining a sealed, sanitary and watertight condition within a specified area.

A flooring installation features flooring laid atop a subfloor in a position leaving a gap between at least one perimeter edge of said flooring and a respectively adjacent wall structure; and an edge moulding having a base stem and a cap, said base stem reaching downwardly into the gap between the flooring and the adjacent wall structure, said cap having an inner lip jutting inwardly over the flooring from said base stem. Double sided tape is disposed between, and adhered to both, the base stem and the wall structure to adhesively secure said edge moulding to the wall structure.

A lower edge finish for a drywall includes a channel with first and second sidewalls, the channel sized to receive a drywall sheet. A base underneath the channel can support drywall sheet above a floor and has a recess below the channel that extends from the first sidewall toward the second sidewall and has a curved furrow upward toward the channel. A paint guard includes a sheet and an edge that is thicker than the sheet. The edge has a lip that is of a shape complementary to the furrow, so the lip can be passed into the recess and the lip becomes lodged in the furrow to retain the edge between the floor and the base, and the sheet extends away from the stud wall to protect the floor from drippings from the drywall sheet.

A wall structure having a horizontal base stud, which wall structure has an upper wall panel, and a horizontal base stud, wherein the base stud has openings to allow for liquids to escape in the event of a plumbing leak, and additional openings to allow for air flow from the exterior to the interior of the wall structure.

A mobile home skirting base comprising: a horizontal surface; and two substantially equal, substantially symmetrical vertical surfaces co-extruded with the horizontal surface forming a channel to insert a mobile home skirting panel wherein the vertical surfaces each having an inwardly oriented retention edge that secure the mobile home skirting panel. The height of the vertical surfaces and the inward orientation of the vertical surfaces' retention edges, along with the other aspects of the invention, allows the mobile home skirting base to provide strong support, stabilization, and protection of the skirting panels.

Described herein is a method for creating a reveal in a wall with the use of a drywall board and baseboard. A backing is secured to the back side of the drywall board or the baseboard, which is then affixed to studs on the wall. The other of the drywall board and the baseboard is also affixed to the studs so that there is an overlap with the backing. A reveal is thereby created that exposes the backing.

A mobile home skirting base comprising: a horizontal surface; and two substantially equal, substantially symmetrical vertical surfaces co-extruded with the horizontal surface forming a channel to insert a mobile home skirting panel wherein the vertical surfaces each having an inwardly oriented retention edge that secure the mobile home skirting panel. The height of the vertical surfaces and the inward orientation of the vertical surfaces' retention edges, along with the other aspects of the invention, allows the mobile home skirting base to provide strong support, stabilization, and protection of the skirting panels.