5 4 3 2 1 0
10
Finishing joints that intersect with a corner
1. When using the finishing head to lay a bead of mud over the joint, place
the finishing head 2 inches from the corner with the back facing into the
corner.
(illustration a)
2. As you dispense mud, first push the head into the corner,
(illustration b)
then pull it back along the full length of the joint
(illustration c)
. This will
avoid leaving excess mud in the corner. Complete all other steps on pages
6-7 for embedding, taping and finishing your repaired joints.
Finishing taper joints
(see cutaway view – illustration d)
1. When using the finishing head to lay a bead of mud over taper (manufac-
tured) joints, set the
finishing head slide adjuster
on
1
(illustration d)
.
This will dispense the right amount of mud to bring the tapered edges
flush with the level of the wall.
2. This type of joint requires only one application of mud down the center of
the joint to bring it flush with the surface
(illustration e)
. There is no need
for “feathering” the edges as described in the previous section.
e
d
dryWall – Taper joinTs
embedded joinT Tape
CuTaWay vieW
b
a
c
11
i
j
k
Embedding tape on corner joints
1. Remove the front ring of the MudGun
™
(illustration f).
(Or, if the last head
used was the finishing head, remove the T-adapter.)
2. Place the
inside corner nozzle
on the front of the MudGun
™
.
(illustration g)
3. Replace the front ring and tighten.
(illustration h)
4. Working from top to bottom, pull the nozzle down the length of the corner,
slowly pumping the trigger to apply a thin (and continuous) coat of mud
(illustration i)
. When you reach knee-height, stop, turn the MudGun
™
and
work up from the bottom.
5. Rest your MudGun
™
in the bucket of water.
6. Cut drywall tape to the length needed to reach from ceiling to floor. Fold it
along the score so that the rough side will be facing into the wall.
7. Starting at the ceiling, push the tape into the mud, using your fingers to
run down the entire length of the joint
(illustration j)
.
8. Again starting at the ceiling, hold the tape in place with your finger and use
the
inside corner smoothing tool
to push tape fully into the corner and
pull downward
(illustration k).
Remove any excess mud from the tool as
you move down the joint by scraping it into the 5-gallon bucket of water.
Continue until you reach the bottom of the joint.
9. Let dry for up to 24 hours. See compound manufacturer’s instructions.
f
g
h
TIP
Always embed the entire joint in one direction. Stopping in the middle and pulling up
from the bottom of the joint will leave creases and wrinkles in the tape.
MAKING MoRE CoMPLEX REPAIRS
Follow these instructions if your job involves taper joints and/or corner joints.
PATChING ANd TAPING INSTRUCTIoNS
The only difference between simple and complex repairs is the need to adjust for corners and taper joints.
Consequently you can follow all instructions for patching and taping a Flat Surface Repair (page 5) with the
following exceptions:
FRoNT
BACK
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