System and method for installation of crown molding on imperfect walls

A molding section comprising:

• a decorative molding portion including a decorative face having an upper end and a lower end, a lower wall contacting surface connecting with said lower end, a back member connected to and extending upwardly from the lower wall contacting surface, said back member offset inwardly on the molding section from the lower wall contacting surface, and an upper member connecting between the decorative face and the back member,
• an attachment portion having a first thickness, a wall contacting surface and an opposite surface, said attachment portion configured to be secured to a wall surface and to flex as needed for the wall contacting surface to be in contact with said wall surface along the entirety of said attachment portion, and
• a hinge extending along an edge of the attachment portion and connecting between the attachment portion and back member of the decorative molding portion, wherein the hinge has a second thickness such that the second thickness is less than the first thickness, the molding portion configured so that when the attachment portion is secured to a wall surface the lower wall contacting surface will be continually urged into contact with the wall surface as a result of a rotational force of the molding portion about a flex point of said hinge.