Finishing Outside Corners on Drywall: Tips and Tricks

When working on your home renovation, finishing the outside corners of drywall is a crucial step. This process ensures the walls look professional and the corners are structurally sound. Whether you opt for a metal strip with a finished look or rounded-edge corner tiles, there are specific techniques to ensure the best results. In this comprehensive guide, we will explain the process of finishing outside corners on drywall, including the materials you'll need and the step-by-step procedures to achieve a perfect finish.

Materials Needed for Outside Corner Finishing

The following materials are essential for achieving a professional finish on your outside corner drywall:

Corner Bead or Metal Strip: This serves as a framework that holds the corners in place. It is crucial for proper corner support and finishing. Rounded-Edge Corner Tile: These tiles provide a decorative touch and complete the look of the corner. Sanding Tape: Helps fill minor imperfections and make the corner smooth. Sanding Sheet: Used to smooth out the surface after filling. Mortar or Joint Compound: Fills the gaps around the corner bead or tiles. Utility Knife: For cutting the bead to fit around electrical boxes and other obstacles. Mixed Joint Compound: Applied to cover rough edges and make the corner smooth. Glazing Knife: Used for applying and smoothing the joint compound. Paintbrush or Roller: For finishing the final touch on the drywall. Stiff-Nose Pliers: For installing corner bead.

Step-by-Step Guide for Finishing Outside Corners

Step 1: Prepare the Wall

Ensure the walls are dry, level, and free of any loose particles or old joint compound. If necessary, patch any holes or cracks.

Step 2: Apply Corner Bead or Metal Strip

Measure and cut the corner bead or metal strip to fit the corner. Use stiff-nose pliers to securely attach it to the drywall. Make sure it is straight and perfectly aligned with the corner. If there are electrical boxes or other obstacles, cut the bead to fit them using a utility knife. Align the bead with the widest part of the corner to ensure even coverage.

Step 3: Apply Corner Tiles (Optional)

If you opt for corner tiles, apply them directly on top of the corner bead or metal strip. Press them firmly into place, making sure they are level. Run a bead of joint compound around the edges of the tile to secure it.

Step 4: Apply Joint Compound

Apply joint compound over the metal strip or corner beads, as well as around the edge of the corner tiles. Use a 6-inch or 8-inch taping knife to smooth and feather the compound out into the wall. Ensure a neat and level finish.

Step 5: Sand and Fill Imperfections

Once the joint compound has dried, use sanding tape to fill any minor imperfections and make the surface smooth. Sand the area with a sanding sheet to achieve a smooth finish. Wipe away any dust with a damp cloth.

Step 6: Apply Additional Joint Compound

Apply a second coat of joint compound and sand again after it dries. This second pass helps create a smoother and more professional look.

Step 7: Priming and Painting

After the compound has dried, it’s time to prime the area. Use a primer specifically designed for drywall. After the primer is dry, you can apply a coat of paint to match your wall color. For a smoother finish, use a high-quality paint and a paint roller or brush.

Conclusion

Finishing outside corners on drywall is an essential step in any home renovation project. By carefully selecting the right materials and following these step-by-step instructions, you can achieve a professional and polished finish on your project. From corner beads to rounded-edge corner tiles, you have options to choose from, each providing a unique aesthetic and purpose. With the right techniques and patience, you can transform your home's exterior corners into impressive architectural details.

FAQs

Q: Can I use both corner bead and corner tiles for outside corner finishing?

A: Yes, you can use both. Apply the corner bead to provide structural support, and then attach rounded-edge corner tiles for a decorative finish. This combination helps create a more unified and professional appearance.

Q: What should I do if the corner bead or tiles are not perfectly aligned?

A: If the corner bead or tiles are not perfectly aligned, it’s important to correct them immediately. Use a utility knife to remove excess joint compound, then cut the bead or tile to fit correctly. Smooth out the area with more joint compound to achieve a seamless finish.

Q: How long do I need to wait before applying primer and paint?

A: Allow the joint compound to cure for at least 24 hours before applying primer. Typically, it’s best to apply primer after the second coat of joint compound has dried, ensuring a smoother and more even surface for painting.

By understanding how to properly finish outside corners on drywall, you can enhance the appearance of your home and create a professional finish that stands the test of time. Whether you’re a professional contractor or a DIY enthusiast, this guide will help you achieve the best results for your project.