Omar Khalid
Installing plastic round corner beads can be done in a few different ways. One common method is to use spray adhesive to attach the bead to the wall. This method can be combined with stapling for added security. Another approach is to use taping mud, which contains glue, to keep the beads in place. This involves applying a generous amount of mud on both sides of the drywall, pressing the bead into place, and filling any remaining holes with mud. A third option is to use a product like Trim-Tex's Mud Set Beads, which are vinyl corner beads that utilize their patented Mud Lock Technology to create a strong bond between the bead and the drywall.
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What You'll Learn
Use spray adhesive
Installing plastic round corner beads with spray adhesive is a common method. This method is effective, long-lasting, and easy to execute. The standard way professionals attach plastic corner beads is by using spray adhesive.
The process begins by spraying the adhesive on the inside flanges of the corner bead. It is then left to set for 10-15 minutes. During this time, the outside drywall corners can also be sprayed with adhesive and allowed to set. It is important to ensure that all spots are covered, as any spots without glue may cause the vinyl to flash or crack.
Once the adhesive is ready, the vinyl bead can be placed on the corner. As the spray adhesive attaches quickly, you will only have a few seconds to make adjustments and ensure it is straight and square.
To further reinforce the bead, some people use a compressed air staple gun to provide added strength. However, spray adhesive is typically strong enough on its own.
When using spray adhesive, it is important to follow safety precautions. Some adhesives may have a strong smell, so it is recommended to ensure proper ventilation during and after application. Additionally, wear protective gear, such as gloves and eye protection, to avoid any accidental contact or inhalation.
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Apply taping mud
When applying taping mud to a plastic round corner bead, it is important to get the consistency of the mud right. Premixed drywall mud is often too thick, so it is recommended to add a little water and stir thoroughly. You can use a mixing paddle attachment for your drill to mix it. You don't want the mud to be too runny, so be careful not to add too much water.
Once you have the right consistency, use a 5-inch knife to apply a generous amount of mud to both sides of the drywall. Make sure there are no dry spots. You can use a pan to hold the mud and apply it with the knife. You want a lot of mud on there, so don't be shy. This process is the same whether you are using a 90-degree Mud Set Rigid Corner Bead, a Mud Set Rigid Jumbo, or a Mud Set Bullnose for a soft, rounded edge.
After you have applied the mud to the drywall, place your bead. Use your knife to press on the bead in the centre to squeeze the mud through the little holes and ensure the bead is centred on the drywall. Use the knife to fill all the little holes on the sides of the bead. If you need to, add more mud, but make sure all the holes are filled. There should be a guide on the bead for your knife to glide on—follow this guide with your knife.
Hold your knife flat against the wall so that you can roll the mud up or down, filling the holes. Make sure that your bead does not touch the ground, as this can cause it to pop off the wall. Use a round wiper knife to clean off any excess mud left on the bead. Taping mud can be difficult to sand with a sponge, so it is important to remove as much excess as possible before it dries.
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Use staples or nails
Plastic round corner beads can be attached to the corner of a wall using staples or nails. This method is often used in conjunction with spray adhesive, which is considered the standard way to attach plastic corner beads.
To attach the beads using staples, apply spray adhesive to the drywall and the bead, position the bead into place, and then staple every six to eight inches. You can use a compressed air staple gun or a pneumatic stapler for this purpose. Crown staples are also recommended.
Nails can be used instead of staples, particularly when working with wood studs. Nails are also used to tighten metal corner beads that have cracked along the edge. When nailing, it is recommended to use small holes and to nail early and often to keep the bead straight.
It is important to note that staples and nails may not be suitable for all types of corner beads. For example, metal corner beads are typically installed with screws, nails, or crimping, while vinyl beads are commonly installed with spray adhesive.
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Choose a corner bead type
When choosing a corner bead type, there are several options available, each with its own advantages and installation procedures. Here are some common types of corner beads to consider:
Plastic Corner Bead
Plastic corner beads, also known as vinyl corner beads, are known for their ease of installation. They are designed to be attached to the wall using spray adhesive, which provides a strong and seamless bond. This type of bead is ideal for creating elegant, rounded corners, especially in rooms with monochromatic colour schemes. Modern plastic technology has also led to the development of high-performance materials, including abuse-resistant vinyl, making it a good choice for high-traffic areas.
Metal Corner Bead
Metal corner beads offer crisp and defined corners. They are typically fastened with screws or nails driven into the wall framing. While metal beads can provide a strong and durable solution, they require more care during installation to avoid permanent kinks or damage. Metal corner beads are often chosen for their traditional look and feel.
Paper-Backed Tape Corner Bead
This type of corner bead is installed similarly to flat drywall tape. While it may not be as durable as other options, it can provide a seamless and smooth transition for corners. Paper-backed tape is not recommended for outside corners as it may not hold up to the same extent as other materials.
Mud Set Beads
Mud Set Beads, such as those offered by Trim-Tex, are made from high-impact, rigid vinyl and feature a unique Mud Lock Technology. This system utilises a series of hooks along the bead's legs that grip into the joint compound, creating an incredibly strong bond with the drywall. Mud Set Beads are known for their durability and impact resistance, reducing the need for maintenance and repairs. They come in various options, including 90-degree Rigid Corner Bead, Rigid Jumbo, and Bullnose for rounded edges.
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Finishing touches
The final steps of installing a plastic round corner bead will depend on the method you have chosen to use.
If you have opted for the spray adhesive method, you should apply a thin coat of joint compound to the wall on either side of the corner with a drywall knife if you are using beading with paper edges. Position the beading so that the paper edges rest on the joint compound and scrape the paper with the knife to flatten it and remove any excess compound. When you are done, the paper on both sides of the beading should be flat against the wall with no lifting or bubbles.
If you are using the taping mud method, use a round wiper knife to clean off any excess mud left on the bead. You should then allow the bead to dry for at least an hour.
If you are using the Mud Set method, wipe away any excess mud and apply your fill coat. With this method, you can apply the fill coat on the same day, saving time and labour.
For a bullnose bead, you can top coat the edges of the beading with two or three coats of joint compound, letting each coat dry before applying the next.
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Frequently asked questions
The standard way to attach plastic round corner bead is with spray adhesive. You can also use taping mud, which has glue in it, to keep the beads on the wall. Some other methods include staples or nails, and contact cement.
First, pre-mix the taping mud with a little water. Then, put a generous amount of mud on both sides of the drywall, ensuring there are no dry spots. Apply the bead and use a knife to press on the bead in the centre to squeeze the mud through the holes and to make sure the bead is centred on the drywall.
Spray adhesive along both sides of the corner and press the plastic beading into position. Finish with a thin coat of joint compound applied to the wall on either side of the corner with a drywall knife.
