Corner bead is an essential component in drywall installation that forms a durable outside corner hidden inside the joint. When two pieces of drywall meet at a perpendicular angle, corner bead is installed over the joint to provide strength and rigidity.
This is particularly important because drywall is naturally brittle, especially along its edges. Corner bead not only adds structural integrity but also creates clean, crisp visual lines in a room. If you are working on a drywall project or ‌home renovation, it’s important to understand the importance of corner bead.
Types of Corner Bead and Their Uses
Corner bead comes in many materials and styles, each suited for different applications. Understanding these options can help you choose the right type for your specific project needs.
Metal Corner Bead
Metal corner bead is a popular choice for its durability and ease of installation. It typically comes in 8′ to 12′ lengths and is about 1 ¼” wide. This type of corner bead is perforated along its length to accommodate nails or screws and often has a textured surface to improve adhesion to joint compound.
While metal corner bead is strong, it can be prone to denting if not handled carefully. It’s also quite sharp, so wearing gloves during installation is strongly recommended.
Plastic/Vinyl Corner Bead
Plastic or vinyl corner bead offers several advantages over its metal counterpart. It’s more resistant to dents and bending, making it easier to work with and less likely to be damaged during installation. Additionally, it’s safer to handle as it lacks the sharp edges of metal corner bead.
One of the key benefits of plastic corner bead is its ease of cutting. Unlike metal versions that require metal shears, plastic corner bead can be easily cut with a standard drywall knife, simplifying the installation process for DIY enthusiasts.
Paper-Faced Metal Corner Bead
For projects involving thicker drywall panels or multiple layers, paper-faced metal corner bead is an excellent choice. This type combines the strength of metal with the added bonding surface of paper tape used in drywall finishing.
The paper facing widens the effective surface of the corner bead, resulting in a smoother finish and better adhesion to joint compound. This option is particularly useful for achieving a seamless look in high-end finishes or when working with challenging drywall configurations.
Bullnose Corner Bead
Bullnose corner bead is designed to create rounded corners instead of sharp 90-degree angles. This style is often favored in adobe and southwestern architectural designs, adding a softer, more graceful look to room corners.
Bullnose corners can look good and be useful (because they tend to bounce better), but they can be hard to fit between walls or install trim. You should carefully consider your overall design plan before opting for bullnose corners.
Articulating/Arch Corner Bead
For curved surfaces like archways, articulating corner bead is the go-to choice. Made from flexible vinyl, this type of corner bead features regularly spaced slots that allow it to bend smoothly without crimping.
Articulating corner bead is versatile, capable of being installed in straight lines or gentle curves. It typically comes in rolls of 8–12 feet but can be extended for larger projects. This flexibility makes it invaluable for creating unique architectural features.
Metal Veneer Corner Bead
Metal veneer corner bead is a specialized option suitable for use with plaster, stucco, or drywall. Instead of a solid nailing surface, it features a mesh of galvanized steel, similar to metal lath. This design allows plaster or joint compound to squeeze through and create a strong bond, resulting in a rigid, durable corner.
Can You Install Corner Bead Yourself?
If you are a handy do-it-yourselfer, you can probably install corner bead. Most DIYers using corner bead have likely also installed the drywall and the process will involve some of the same tools. Since most corner bead will be relatively short in length (as opposed to crown molding or baseboard), most of the time it can be installed by one person.
If you’re a handy do-it-yourselfer, installing corner bead is typically a manageable task. Most DIY enthusiasts who are comfortable with drywall installation should be able to handle corner bead as well. The process involves many of the same tools and techniques used in general drywall work.
One advantage of corner bead installation is that most pieces are relatively short, unlike longer trim elements such as crown molding or baseboards. This means that in many cases, a single person can handle the installation without assistance.
You should know that proper installation is crucial for both the appearance and durability of the finished product. Improperly installed corner bead can lead to visible seams, cracks, or even structural weakness in the corners.
Tools Needed for Corner Bead Installation
To successfully install corner bead, you will need a few basic tools:
- Cutting tools: Metal shears or a saw with a metal-cutting blade for metal corner bead; a utility knife for vinyl or paper-faced options.
- Fastening tools: A hammer or cordless drill, depending on whether nails or screws are used.
- Measuring tape
- Safety equipment: Gloves and eye protection
- For some types: Joint compound and application tools
The type of fasteners used depends on the corner bead material and the structure. For most residential applications, number six drywall nails or 1 ¼” drywall screws are suitable. Screws are often preferred for their strength and adjustability.
Based on our experience, some vinyl and paper-backed metal corner beads can be installed using only joint compound, eliminating the need for metal fasteners. This method can help prevent issues like nail pops or visible fastener heads.
Special Applications: Using Corner Bead for Arches and Hexagonal Doorways
Corner bead isn’t just for standard right-angle corners. It can be creatively used for more complex architectural features, such as arched doorways or hexagonal openings.
Creating custom shapes with corner bead requires some planning and precise cutting. Here’s a look at a few methods you can use for these special applications.
Creating Arched Doorways
For arched doorways, articulating corner bead is ideal due to its flexibility. Start by measuring and cutting the corner bead to fit the archway’s curve. Use a pair of tin snips or heavy-duty scissors to cut the bead into manageable pieces, ensuring each section aligns well with the curve.
Before securing the bead, apply a thin layer of joint compound to the drywall edges, wearing a mask to ensure you don’t breathe in dust particles. This helps the corner bead adhere better. Press the corner bead firmly into place and secure it using screws or nails as needed. Once the compound dries, apply a second layer for a smooth finish, followed by sanding.
Hexagonal Doorways
For a hexagonal doorway arch, corner bead can be used to create clean, precise angles. The process involves making 45-degree angle cuts at specific points along the corner bead. Many professional installers like to cut the corner bead into pieces instead of notch it. This saves them time and makes the angles look better.
To mark the correct angles, a carpenter’s square or speed square can be invaluable, especially for those with limited experience working with angles. By copying the size of the arch to the corner bead and making 45-degree notches at the marked points, the corner bead can be bent into the desired hexagonal shape.
Secure the corner bead with nails or screws, and apply joint compound to cover any gaps or seams. Sand the area once it’s dry for a seamless finish.
Tips for Successful Corner Bead Installation
- Measure carefully: Accurate measurements are crucial for a professional-looking finish.
- Cut cleanly: Whether using shears, a saw, or a knife, make clean, straight cuts for the best fit.
- Secure properly: Ensure the corner bead is firmly attached along its entire length to prevent future cracks or separation.
- Use the right compound: For paper-faced or adhesive-backed corner bead, use a setting-type joint compound for the strongest bond.
- Sand smoothly: After applying joint compound, sand the area carefully for a seamless transition between the corner bead and the wall surface.
When to Consider Professional Installation
While you can successfully install corner bead, there are situations where professional help might be advisable:
- Complex architectural features: Elaborate arches or multi-angled corners may require specialized skills.
- Large-scale projects: For whole-house renovations or new construction, professional installation ensures consistency and efficiency.
- High-end finishes: If a flawless, high-quality finish is crucial, a professional’s expertise can make a significant difference.
- Time constraints: Professional installers can complete the job quickly and efficiently, which may be important for those on a tight schedule.
Final Thoughts About Corner Bead
Corner bead might seem like a small detail in the big picture of building or fixing your home, but it has a big impact on how durable and beautiful a space is.
This simple building part is important for finishing walls and architectural features. It protects the drywall edges from being damaged and makes corners look clean and professional.
Whether you choose traditional metal, modern vinyl, or special options like bullnose or flexible corner bead, you have many choices to fit your needs and design preferences.
While many DIY enthusiasts can tackle corner bead installation themselves, it’s important to approach the task with care and precision.
