A bullnose corner bead can be a interesting choice for covering an outside angle. Transition caps and other types of fixtures will allow you to merge the bullnose corner bead with other types of corner beads seamlessly. There are several ways to install bullnose corner bead. The mud setting technique provides the strongest final product but is labor intensive and messy. The spray adhesive technique will leave the corner fairly strong and is less labor intensive. The stapling technique is the easiest but will produce the weakest corner. After installation, bullnose corner beads require no further special treatment and can be finished just as normal corner beads are.
Instructions
Dry Fitting
1. Cut the bullnose corner bead to the correct length for the outside angle.
2. Dry fit it over the outside angle to ensure that the corner formed by the edges of the drywall panels will not interfere with the radius of the bullnose corner bead. The bullnose should lay flush against the outside angle. Trim the edges of the drywall if necessary.
3. Install any transition caps or other corner bead fixtures before installing bullnose corner bead.
4. Choose one installation technique from the following sections to install the bullnose corner bead.
Mud Setting Technique
5. Spread a thick layer of joint compound over both sides of the outside angle and apply the bullnose corner bead to the outside angle.
6. Press down firmly. The joint compound underneath the bullnose corner bead should begin to squeeze through the holes in the bullnose corner bead.
7. Step back from the outside angle to ensure that the bullnose corner is straight and make any necessary adjustments. Remove the excess joint compound with your taping knife.
8. Apply a thick layer of joint compound over the outside angle and allow it to dry. You can now finish the corner bead as normal (simply sand and re-coat with joint compound until the surface is smooth and polished).
Spray Adhesive Technique
9. Spray adhesive on the side of the bullnose corner bead that will contact the wall. Follow the adhesive manufacturer's recommendations, if any.
10. Spray adhesive on the outside angle that will contact the bullnose corner bead.
11. Place bullnose corner bead on the outside angle. Do your best to avoid having to reposition the bead because the adhesive works fast. Using a hard flat tool, such as a taping knife, push the bullnose corner bead onto the wall. Make sure that the bullnose is laying flush against the wall.
12. Staple the bullnose corner bead to the wall approximately every 8 inches.
13. Apply a thick layer of joint compound over the outside angle and allow it to dry. You can now finish the corner bead as normal (simply sand and re-coat with joint compound until the surface is smooth and polished).
Stapling Technique
14. Place the corner bead on the outside angle and make sure it is straight.
15. Staple the corner bead to both panels of drywall, 8 inches apart.
16. Apply a thick layer of joint compound over the outside angle and allow it to dry. You can now finish the corner bead as normal (simply sand and re-coat with joint compound until the surface is smooth and polished).
17.This technique is the quickest and simplest, but offers the weakest hold of the three options.
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