Cement these with joint compound to the inside of the wallboard above and below the opening.

When the corner beads are in place, level and smooth the surface with joint compound.

There were so many holes in the walls that they had to use 10 gallons of joint compound to repair them.

Apply joint compound around the perimeter where it will touch the existing wall.

Clean the surface, apply the tape and cover it with joint compound.

A joint compound will then be applied directly to it.

When finishing the wall, these depressions will be filled with joint compound.

Twenty-four hours later, apply a third coat of joint compound 8 to 10 inches wide.

Afterward, apply a second layer of joint compound, this time with the 10-inch knife.

A trowel is then used to apply the joint compound.