Abstract: Drywall endcaps of the type that mate with drywall seam finishing material. The endcaps can be square or bullnose and cap the ends of exterior corners with either three 90 degree or other exterior angles, or two 90 degree or other exterior angles and one 90 degree or other interior angle. The endcaps can be made of two or three laminate layers with an inner layer that faces wallboard and a rigid or semi-rigid layer that can be optionally tapered. The semi-rigid layer can be high impact plastic. An optional outer layer is of fibrous material and is prepared to directly receive paint or texture.

Abstract: 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. A layer of finishing material is bonded to the exterior surface of the semi-rigid member. To install one of the pieces, it is selected from stock and cut to length. A flat coat of mud is applied to both sides of an exterior or interior angle, and the trim piece is placed over the mud and smoothed into place. Since it is preformed, the piece makes a straight line at the required angle.

Abstract: An adjustable pre-fabricated 3-way inside drywall corner with two flat sides and a flat face to be placed in the pointed 3-way corners created where sheets of hung drywall are joined to form two walls and a ceiling. This pre-fabricated corner can be paper, metal, or other suitable material. It allows a drywall worker to string tape by starting the tape a few inches away from a corner and running to the next corner, ending a few inches away from the second corner. The worker thus does not have to gauge exactly where to cut the tape to mate into the corners. Also, the effect of tape slip while stringing becomes unimportant. After the tape and drywall mud is dry, before the finishing step, the pre-fabricated corners are placed in every corner of a room, held in place by drywall mud. A drywall worker needs only to put a small amount of topping mud on the flanges and then "kill" the corner with a 4-6 inch knife.

Abstract: A pre-fabricated 3-way inside drywall corner with three tapered flanges to be placed in the pointed 3-way corners created where sheets of hung drywall are joined to form two walls and a ceiling. This pre-fabricated corner can be paper, metal, or other suitable material. It allows a drywall worker to string tape by starting the tape a few inches away from a corner and running to the next corner, ending a few inches away from the second corner. The worker thus does not have to gauge exactly where to cut the tape to mate into the corners. Also, the effect of tape slip while stringing becomes unimportant. After tape and drywall mud is dry, before the finishing step, the pre-fabricated corners are placed in every corner of a room, held in place by drywall mud. A drywall worker needs only to put a small amount of topping mud on the flanges and then "kill" the corner with a 4-6 inch knife.