USG SHEETROCK Gypsum Panels User Manual

Page 19

15 Second Coat, Flat Joints and

Fasteners

Allow first coat to dry overnight.
Scrape off bumps, ridges and
other imperfections with knife.
Be careful not to damage
surface.

Apply joint compound to tapered
joints using an 8

Љ knife the

length of the joint.

Apply pressure to knife edge
farthest from the joint and lift
the other edge just slightly
above surface. Draw knife down
joint. Repeat for opposite edge.
This technique is called feather-
ing. Joint compound should
extend beyond first coat for a
total width of 7

Љ or 8Љ.

Apply a 7

Љ-8Љ coat of joint

compound to each side of butt
joints and feather. Compound
should extend beyond first coat
for a total width of 14

Љ.

Apply a second coat to
fasteners in same manner as
first coat.

16 Second Coat, Inside Corners

Allow first coat to dry overnight.
Apply joint compound on one
side using a 5

Љ knife for the

length of the corner. Scrape off
any compound that laps onto
the second side. Feather out
beyond first coat and allow to
dry. After first side is dry, apply
compound on other side and
feather.