Drywall finishing system
View Patent ↗A drywall finishing system for finishing 1) normal inside and outside corners of any angle, 2) stub wall or closet corners, 3) window wrap corners, and 4) L-metal for window sills and areas where drywall ends against some other surface like brick. The finishing system comprises a preformed trim piece comprising a semi-rigid member that is relatively thick in the center and tapers laterally to a thin edge. A layer of paper is bonded to the inside surface of the semi-rigid member for receiving joint compound to continuously bond the trim piece to the dry wall; this paper layer can optionally have a layer of adhesive material on its outer surface. A layer of finishing material is bonded to the exterior surface of the semi-rigid member.
1. A flexible drywall trim piece having width and length comprising:
a continuously extruded semi-rigid elongated plastic member having an approximately right angle bend at approximately one-third of said width and an end-to-end hinge at approximately two-thirds of said width, said bend together with said hinge defining a fixed flange portion, a fixed center region, and a hinged flange portion;
said hinged flange repeatably adjustable about said hinge without substantially fatiguing said hinge to a plurality of angles between approximately 15 degrees to approximately 340 degrees, said angles measured between said fixed center region and said hinged flange;
said elongated plastic member having two outside end-to-end edges, said fixed flange and said hinged flange being tapered toward said outside edges;
top and bottom paper layers substantially covering said elongated plastic member;
an adhesive layer on an exterior surface of one of said paper layers.
2. The drywall trim piece of claim 1 wherein said elongated plastic member is high-impact plastic.
3. The drywall trim piece of claim 1 wherein at least one of said paper layers is cup stock paper.