USG SHEETROCK Gypsum Panels - Manual (Page 15)

Be careful not to overthin
compound. (For outside
corners, extend compound
approximately 2
Љ or 50 mm
from the corner on each side;
for inside corners, extend
1-1/2
Љ or 38 mm from the other
corner on each side.)
Place trim on wall and press into
position. Corner bead should be
aligned tight to ceiling. Embed
trim by running the knife over it
with even pressure at a 45°
angle.
Use the knife (or a damp
sponge) to remove excess
compound, eliminating any air
bubbles under the paper. Allow
to dry.
Using a 6
Љ taping knife for
outside corners (4
Љ for inside
corners), apply another coat of
joint compound (E
ASY
S
AND
,
Topping, All-Purpose, or
Lightweight All-Purpose). Keep
this coat as smooth as possible.
Feather out 5
Љ to 6Љ (125 to 150
mm) from the nose of the trim
on each side for outside corners
(1
Љ or 25 mm past previous coat
for inside corners). Let dry. Sand
sides lightly where needed.
Use an 8
Љ or larger finishing
knife for outside corners (4
Љ-6Љ
knife for inside corners) to apply
a finishing coat of the same
ready-mixed or setting-type
compound. Feather compound
8
Љ (200 mm) from nose of trim
for outside corners (1
Љ [25 mm]
past previous coat for inside
corners). Let dry. Sand and
prime.
15