how to put plastic corner bead on drywall

Daniel Parker

3 min read

·

21-01-2025

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Meta Description: Learn how to flawlessly install plastic corner bead on drywall with our comprehensive guide. From choosing the right bead to finishing touches, we'll walk you through each step for professional-looking results. Get a perfectly smooth, durable corner every time!

Choosing the Right Corner Bead

Before you begin, selecting the appropriate corner bead is crucial. Plastic corner bead comes in various types, including:

• Standard Bead: This is the most common type, ideal for most interior corners.
• Bullnose Bead: This rounded bead creates a softer, more decorative edge.
• L-Bead: Used for exterior corners, offering superior protection against damage.

Consider the corner's location and desired aesthetic when making your choice. For interior corners in most applications, standard plastic corner bead is sufficient.

Tools and Materials You'll Need

Gather these essential items before starting your project:

• Plastic corner bead (measure your corners carefully!)
• Drywall screws (specifically designed for drywall)
• Drywall tape
• Joint compound (also known as mud)
• Putty knife (6-inch and 12-inch are recommended)
• Measuring tape
• Utility knife or tin snips
• Level
• Pencil
• Sandpaper (fine grit)
• Bucket of water
• Drop cloths or plastic sheeting (to protect your floors)

Step-by-Step Installation Guide

1. Preparing the Corner:

Ensure the drywall corner is clean and free of debris. Any loose material should be removed. A level corner is essential for a professional finish. Use a drywall knife or a utility knife to remove any loose drywall.

2. Measuring and Cutting the Corner Bead:

Measure the length of the corner you need to cover. Cut the plastic corner bead to the appropriate length using tin snips or a sharp utility knife. Ensure accurate measurements to avoid waste and ensure a perfect fit.

3. Attaching the Corner Bead:

Hold the corner bead firmly against the drywall corner, ensuring it's flush. Secure the bead using drywall screws, spaced approximately every 6-8 inches. Slightly countersink the screws to allow for a smooth finish. Use a level to ensure the bead is straight.

4. Applying the First Coat of Joint Compound:

Using a 6-inch putty knife, apply a thin, even coat of joint compound over the bead, covering the screw heads and ensuring the compound reaches the drywall surface on either side of the bead. Work in small sections for best results.

5. Taping and Second Coat:

Once the first coat is dry (usually overnight), apply a strip of drywall tape along the bead, embedding it into the wet joint compound. Apply a second coat of joint compound, feathering it out onto the drywall surface. This second coat should be wider than the first, ensuring complete coverage and a smooth transition to the wall.

6. Sanding and Finishing:

Allow the second coat of joint compound to dry completely. Once dry, carefully sand the area smooth, using fine-grit sandpaper. Wipe away any sanding dust with a damp cloth.

7. Third Coat (If Necessary):

Depending on the thickness of the previous layers, a third coat of joint compound may be necessary to achieve a perfectly smooth finish. Repeat the sanding process as needed. This process helps to hide the bead completely, giving a smooth, seamless finish to the wall.

8. Priming and Painting:

After the final coat is dry and sanded, prime the corner area to ensure proper paint adhesion. Then, apply your desired paint color.

Troubleshooting:

• Uneven Bead: Use a level frequently throughout the process to ensure a straight bead.
• Gaps in the Compound: Apply more compound and re-tape if needed.
• Uneven Sanding: Use even pressure to prevent dips or grooves.

With careful attention to detail and these simple steps, you'll be able to install plastic corner bead like a pro. This guide provides comprehensive instructions to guide you through the process, resulting in a professional-looking finish for your drywall corners. Remember, patience and precision are key to success!