4. Shake can vigorously for one minute
before dispensing or between uses.
5. Invert can and screw foam dispensing
gun firmly onto valve as shown in
Figure 2. Screw until finger-tight; do
not overtighten (Figure 3).
Figure 2.
Figure 2.
Figure 3.
6. When changing cans, tighten the
flow control knob before removing
the empty can (Figure 4). Use GREAT
STUFF PRO
™
Gun Cleaner to remove
any residual foam from the attach-
ment area before attaching fresh can.
Always replace can immediately. Press
the trigger to fill the foam dispensing
gun with adhesive.
7. Dispense adhesive for 3–6 seconds to
purge air from gun.
8. To control size of adhesive bead,
squeeze trigger on the foam dispens-
ing gun or adjust the flow control
knob on the back of the gun
(Figure 5).
Figure 6.
Figure 7.
TIP
Using grease or petroleum jelly in
the adapter of the gun can reduce
possibility of foam gluing the can on
the gun.
Figure 5.
TIP
Apply adhesive in a continuous bead,
with no voids or breaks, to achieve
an effective bond.
Application
1. Keeping can inverted, apply a 1/2”
(13 mm) bead of adhesive the full length
of each stud or joist (Figures 6 and 7).
Figure 4.
2. Wherever sheet materials butt
together along sistered studs or joists,
dispense two 1/2” (13 mm) beads side
by side or one 1/2” (13 mm) bead in a
zigzag pattern the full length of the
sistered studs or joists (Figures 8
and 9).
3. Clean foam dispensing gun periodi-
cally by rubbing the nozzle on soft
wood to free it from adhesive. Do
not use a sharp object to clean foam
dispensing gun. Use a solvent cleaner
such as GREAT STUFF PRO
™
Gun
Cleaner between extended periods
of non-use
4. Adhere substrates within 10 minutes
of dispensing adhesive. If the applied
bead has skinned over, scrape it off
and apply a new bead.
