Multifunction finishing assembly for floor covering, a method for manufacturing and a method for laying said assembly

A finishing assembly having a longitudinal axis for a floor covering comprising:

• at least two bars that each include a corresponding surface, said at least two bars being assembled together side by side such that said corresponding surfaces are spaced apart from each other to cooperatively define a groove with an opening therebetween, said groove extending along said longitudinal axis, said at least two bars being assembled to be used in a first floor covering application and said at least two bars being separable such that at least one of said bars is usable in a second floor covering application, said finishing assembly further comprising a surface coating that is applied externally to each of said at least two bars to extend directly over and cover the opening, wherein the groove and opening has a width sufficient for a cutting blade to penetrate through said surface coating and moved through said opening, into said groove, and along said longitudinal axis.