How to Mud Drywall Corners with Corner Bead
Mudding drywall corners with corner bead requires applying joint compound smoothly over the bead and blending it into the wall. This process creates durable, finished corners ready for painting.
Properly finishing drywall corners is essential for a professional look. Using corner bead protects the corner edge and provides a straight line to guide your mud application.
Before you begin mudding, ensure your corner bead is securely attached and the area is clean and dust-free. Having the right tools ready will make the process much smoother.
Necessary Tools & Materials
A few basic items are needed for this task:
| Tool | Purpose |
|---|---|
| Drywall Hawk | Holds joint compound for easy access |
| Drywall Knives | Apply and smooth compound |
| Joint Compound | The mud used for finishing |
| Sanding Sponge/Paper | For smoothing dried compound |
Applying the First Coat of Mud
The first coat is crucial for embedding the corner bead and establishing the base layer of compound.
- Prepare Your Mud: Scoop some joint compound onto your drywall hawk (as mentioned in the reference). This keeps the compound within easy reach.
- Load Your Knife: Using a 6-inch drywall knife, take a manageable amount of compound from the hawk.
- Apply Generously: Apply a generous layer of compound to both sides of the corner, covering the corner bead completely (as stated in the reference). Work from top to bottom or bottom to top, applying consistent pressure.
- Smooth and Feather: Smooth out the compound, feathering the edges to blend with the surrounding wall (as described in the reference). Hold the knife at a slight angle to pull excess mud off the bead's edge while leaving enough to cover the paper or vinyl flange.
- Pro Tip: Don't worry about achieving perfection on the first coat. Its main purpose is coverage and bonding.
Subsequent Coats and Finishing
After the first coat dries completely (check the compound packaging for drying times, usually 12-24 hours), you will apply subsequent coats using wider knives to build out the finish and create a smooth transition.
- Second Coat: Apply a thinner layer using an 8-inch or 10-inch knife, extending the mud further out from the corner bead edge than the first coat.
- Third Coat (if needed): For a flatter, wider finish, a third coat with a 10-inch or 12-inch knife might be applied, feathering the edges even wider.
- Sanding: Once the final coat is dry, carefully sand the compound smooth using fine-grit sandpaper or a sanding sponge. Be careful not to sand through the corner bead itself.
Following these steps, especially applying a generous first coat and properly feathering the edges as outlined in the reference, will help you achieve professional-looking drywall corners.
