USG SHEETROCK Gypsum Panels - Manual (Page 24)

c. Apply coat of joint compound
over taped area. Let harden and
apply second coat. Sand and
prime when dry.
3 Repairing Large Cracks
(approx. 1/8
Љ)
a. Trim any loose pieces from
the damaged area using a knife
and wipe it clean.
b. Apply compound to crack
with 5
Љ finishing knife.
c. Embed tape in compound to
bridge crack. Draw knife firmly
over crack to tightly embed
tape. Let compound harden.
d. Apply compound over tape
with knife. Let harden and apply
second coat of compound if
necessary. Sand and prime
when dry.
4 Repairing Large Holes (over 2
Љ)
or Water-Damaged Areas
a. Cut out damaged panel
section using a utility knife
along the studs and a keyhole
saw between the studs. Remove
section with a hammer and
remove old screws or nails.
Repairing Damaged Panels
24