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Drywall corner curb is a vinyl or aluminum strip with small holes used to create a smooth surface along drywall corners and intersections. It strengthens drywall and prevents damage. To install, secure drywall and apply joint compound, then press the curb onto the corners. There are different types of corner beads for different applications, including adjustable and arched.
A drywall corner curb is a building material used as part of the drywall finishing process. It consists of a thin strip of vinyl or aluminum bent at a 90 degree angle. The corner curb has a number of small holes in its surface that help it bond with joint compound or Spackle® during installation. This material is available in standard lengths ranging from eight to twelve feet (2.4 to 3.7 m), with each side measuring 1 inch (25.4 mm) to 1.75 inches (44.5 mm) wide.
Drywall corner curb is used to create a smooth, seamless surface along drywall corners and intersections. It also strengthens the drywall and helps prevent dents, scratches and other signs of damage. Finishers can use a drywall corner curb on a wide variety of applications. These fixtures are typically used on wall corners both indoors and out, along the perimeter of the ceiling, and around doorways or archways.
To install a drywall corner curb, you must first hang and secure the drywall as usual. As joint compound is added to each seam, it is also applied in a thin layer around corners and intersections. While the compound is still damp, a corner bead is pressed firmly onto the corners and allowed to dry. To maintain a uniform look, a single piece of material should be used on each corner. Using two shorter lengths to cover the corner will usually result in a visible joint.
Drywall trims have several types of corner beads to choose from depending on the application. The traditional drywall corner curb is used on inside and outside corners that meet at a 90 degree angle. Corners that meet at odd-sized angles will require the use of adjustable drywall beads, which typically expand from 70 to 150 degrees. Walls subject to high levels of abuse may require extra large corner beadboards, which have extended sides to help protect a larger area.
There are also a number of special units available for more demanding applications. An arched drywall corner curb is used to build arches and other curved surfaces. One side of the heel features tabs to allow installers to flex it around a curve as needed. Arc Beads can be used on both internal and external corners or intersections. A trim bead is used for drywall or stucco applications and has larger holes in its surface to hold a larger amount of grout or adhesive.
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