Abstract: As extruded from a polymeric material, such as polyvinyl chloride, a drywall-trimming strip has a central portion, which has a bullnose region and two planar regions, one at each side of the bullnose portion. Further, the drywall-trimming strip has two lateral flanges, each of which is joined unitarily to the bullnose portion by a stepped junction. The bullnose region has an exterior radius of 0.350 inch approximately. Each planar region has a width of 0.217 inch approximately, as measured in a plane normal to an axis defined by the bullnose region. Each junction has a measurement of 0.095 approximately, as measured between a plane defined by the exterior surface of the bullnose portion and a plane defined by the interior surface of the flange at such junction. Having a thickness of 0.055 inch approximately, the strip is adapted to fit along an elongate corner defined by two drywall panels, each of which has a thickness not less than 0.

Abstract: As extruded from a polymeric material, such as polyvinyl chloride, a drywall-trimming strip has a central portion, which has a bullnose region and two planar regions, one at each side of the bullnose portion. Further, the drywall trimming strip has two lateral flanges, each of which is joined unitarily to the bullnose portion by a stepped junction. The bullnose region has an exterior radius of 0.350 inch approximately. Each planar region has a width of 0.217 inch approximately, as measured in a plane normal to an axis defined by the bullnose region. Each junction has a measurement of 0.095 approximately, as measured between a plane defined by the exterior surface of the bullnose portion and a plane defined by the interior surface of the flange at such junction. Having a thickness of 0.055 inch approximately, the strip is adapted to fit along an elongate corner defined by two drywall panels, each of which has a thickness not less than 0.

Abstract: In a drywall-trimming accessory molded from a polymeric material, such as polystyrene, and having two flanges, which diverge from each other, each flange is adapted in an intended use to cover an edge portion of a drywall panel and to have a fastener driven through said flange. Each flange has a mosaic of break-away panes. Each pane being adapted to break away from the flange having such pane, along at least one of the grooves defining such pane, if such pane is struck by a fastener being driven through the flange having such pane. Preferably, each pane is defined by two elongate, parallel apertures and by two elongate, parallel grooves, which are formed in an inner surface of the flange having such pane.

Abstract: A drywall-trimming assembly comprises a drywall edge-trimming strip extruded from polyvinyl chloride and a drywall corner-trimming device molded from acrylonitrile-butadiene-styrene. The drywall corner-trimming device has a projecting tab, which fits under an end portion of the drywall edge-trimming strip so that an outer surface of the projecting tab faces an inner surface of the end portion of the drywall edge-trimming strip. The projecting tab has a pattern of alternating ridges and grooves, which extend between the lateral edges of the projecting tab. An adhesive of a type that adheres comparatively less strongly to a unit of surface area of the outer surface of the projecting tab and that adheres comparatively more strongly to a unit of surface area of the inner surface of the end portion of the drywall edge-trimming strip is used for adhering the outer surface of the projecting tab to the inner surface of the end portion of the drywall edge-trimming strip.

Abstract: For trimming an archway, a drywall-trimming has a nose with an outer surface and an inner surface. The outer surface has a curved portion conforming substantially to an arcuate profile with a radius in a range from approximately 1/4 inch to approximately 3/4 inch. The drywall-trimming strip has a series of slits defining a series of tabs spaced from one another along a tabbed edge but not extending into the nose. Near the tabbed edge, the slits have widened, oblong portions. Usually, the drywall-trimming strip has a flange extending from and along an opposite edge, but the flange is omitted for some applications. A comparatively softer portion, which includes the juncture where the tabs are joined to the tabbed edge, is made from a comparatively softer, more flexible, polymeric material, such as polyvinyl chloride having a hardness of Durometer 92 Shore A.

Abstract: For trimming a drywall corner, a drywall-trimming article has an elongate portion and two flange portions, which are extruded unitarily with the elongate portion from polyvinyl chloride. The elongate portion has an arcuate profile. Each flange portion has an array of apertures. One of the convex and concave surfaces defined by the central portion is covered substantially with discrete fibers, which adhere to the substantially covered surface but which do not cover the remaining surfaces of the central portion and of the flange portions. Such adhering fibers facilitate application of a coat of paint and texturization of the coat of paint over the substantially covered surface without separating the inner surfaces of the flange portions from the underlying drywall by any appreciable thicknesses due to such adhering fibers.

Abstract: In a drywall corner-trimming assembly, a splice is employed with two corner-trimming members, which approximate each other at one end of each member. Each member has a central portion and two flanged portions. With the splice straddling the members, a portion of one expansive surface of the splice faces the interior surface of the central portion of each member, which portion is located where the splice has at least one of the perforations. An adhesive layer is interposed between the same one of the expansive surfaces of the splice and the interior surfaces of the central portions of the members and is ventilated by the perforations.

Abstract: For trimming a drywall corner, a drywall-trimming article has an elongate portion and two flange portions, which are extruded unitarily with the elongate portion from polyvinyl chloride. The elongate portion has an arcuate profile. Each flange portion has an array of apertures. One of the convex and concave surfaces defined by the central portion is covered substantially with discrete fibers, which adhere to the substantially covered surface but which do not cover the remaining surfaces of the central portion and of the flange portions. Such adhering fibers facilitate application of a coat of paint and texturization of the coat of paint over the substantially covered surface without separating the inner surfaces of the flange portions from the underlying drywall by any appreciable thicknesses due to such adhering fibers.

Abstract: In a drywall corner-trimming assembly providing a "bullnose" configuration, two corner-trimming members and a splice are combined. Each member has a central portion and two flanged portions. The central portion has a generally arcuate profile. Each of the flanged portions extends from one of the lateral edges of the central portion at a step defining a lateral limit of a concave surface of the central portion. The members and the splice are assembled so that the splice straddles such members, so that a portion of one of the expansive surfaces of the splice faces the concave surface of the central portion of each of such members, so that the splice is concealed at least substantially by the central portions of such members are viewed, and so that each of the lateral edges of the elongate splice is pressed firmly against the step at one of the lateral edges of the central portion of each of said members. The splice is secured adhesively to the members, as by adhesive ribbons.

Abstract: An improved, elongate, flexible corner for trimming a curved surface, such as a cylindrical surface of a building column, comprises an elongate angle extruded from a relatively hard but flexible, polymeric material and an elongate strip extruded from a relatively soft but pliable, polymeric material. The elongated angle and the elongate strip are coextruded respectively from polyvinyl chloride having different durometer hardnessess. The elongate angle has a first, relatively wide, relatively thick flange with a distal edge and a proximal edge and a second, relatively narrow, relatively thin flange with a distal edge and a proximal edge, which is unitary with the proximal edge of the first flange. The second flange extends from the first flange, approximately at a right angle relative to the first flange when the flexible corner is unstressed. Each of the first and second flanges has an inner surface and an outer surface and the inner surfaces define approximately a right angle relative to each other.

Abstract: A panel edge-finishing accessory which is useful as an expansion joint between two drywall panels comprises three integrally joined, elongate strips, namely two relatively rigid, lateral strips and a relatively pliable, middle strip, which may be respectively coextruded from polyvinyl chloride having different durometer hardnesses. Each lateral strip has a broad portion with a distal edge and a proximal edge, a rib with a distal edge and a proximal edge merging with the proximal edge of such lateral strip, and a tear-away flange joined integrally to the distal edge of the rib at a preferentially weakened juncture. The middle strip has a zig-zag profile and is joined integrally at each of its opposite edges to the distal edge of the rib of one of the lateral strips. The ribs extend so as to be generally normal to the lateral strips and are used for guiding a tool used to apply drywall-finishing material over the lateral strips.

Abstract: A drywall corner-finishing accessory comprises three integrally joined, elongate strips, namely two relatively rigid, lateral strips and a relatively pliable, middle strip coextruded respectively from polyvinyl chloride having different durometer hardnesses. Each lateral strip has a rib along one edge. At its opposite edges, the middle strip is joined to the lateral strips at the distal edges of the ribs, preferably being joined to lateral surfaces of the ribs, so that a broad surface of the middle strip is stepped from the lateral strips. The accessory is flexible along the middle strip selectively to define a stepped, inside corner and to define a stepped, outside corner. The rib of each lateral strip guides a drywall-finishing tool and has a grooved pocket opening toward the distal edge of such lateral strip to receive drywall-finishing material.

Abstract: A wall construction comprises a ceiling or wall structure having an exposed surface, a drywall panel having an edge near such surface, and an accessory comprising a bead for finishing the edge and a separate, removable strip for masking a portion of such surface to prevent drywall finishing material or paint from being deposited on the masked portion. The bead has a generally L-shaped profile with a surface-engaging leg secured to and engaged with a panel surface, with an edge-covering leg extended inwardly over the panel edge, and with a generally U-shaped lip joining the legs. A generally J-shaped portion of the edge-covering leg defines a channel opening toward the lip, grasping an inner portion of the strip releasably, and having an edge spaced inwardly from the lip. An outer portion of the strip extends beyond the lip and performs such masking function.