How to Make an Inside Radius With Drywall

Arched doorways and curved walls can add personality to a room. Standard drywall installation is a matter of cutting flat sheets of material to the correct dimension and securing them in place. Installing drywall on curved surfaces is problematic given its tendency to crack when flexed. Fortunately, there is a simple method to overcome this problem that produces smooth, professional results.

Spray bottle
Distilled water
Drywall screws
Drill with driver bit

Instructions

- 1
  Fill a spray bottle with distilled water. Tap water contains dissolved minerals. Some of these may stain the drywall’s paper covering and bleed through several coats of paint.
- 2
  Lightly spray the center portion of the outside radius surface of the drywall with water. Once it penetrates the paper covering, the gypsum core quickly becomes pliable. Avoid wetting the drywall's outside edges.
- 3
  Place the dampened portion against the framing studs. Push the center of the drywall into position. Push slowly with moderate pressure until it is firmly seated against the supporting studs.
- 4
  Insert drywall screws in the outer edges of the piece with a drill and driver bit. Use only the number of screws required to hold the piece in position while drying. Initially attaching only the outer edges reduces the risk of damaging the piece. Allow the drywall to dry for at least 12 hours.
- 5
  Install the remaining drywall screws. Under most conditions, one screw every 18 inches on each wall stud is sufficient.

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