Apparatus and method for mounting covers and devices co-planar with walls and other building surfaces

A method of mounting a wall plate system in a building surface, the wall plate system comprising a wall flange extrusion assembly comprising a mounting flange portion and an extrusion member portion, the extrusion member portion having a frame defining an aperture and a front edge of the frame extending away from a front surface of the mounting flange portion by a pre-determined distance, and a cover inserted into the aperture, a front surface of the cover being substantially co-planar with the front edge of the extrusion member portion and the building surface, the method comprising:

• affixing the wall flange extrusion assembly over a junction box mounting aperture in the building surface;
• mounting the cover over the aperture, the cover comprising a temporary cover with a raised flange portion on a front surface of the temporary cover surrounding an opening in the temporary cover that substantially aligns with the aperture;
• blending the mounting flange portion of the wall flange extrusion assembly into the building surface, wherein the front edge of the frame of the extrusion member portion is substantially co-planar with the building surface;
• removing the temporary cover;
• and
• inserting the final cover into the aperture, a front surface of the final cover being substantially co-planar with the front edge of the frame of the extrusion member portion and the building surface.