Installation Guide

Application
1. Keeping can inverted, insert
applicator nozzle into the space
between the window or door and
the rough opening and begin
applying foam in a continuous
bead (Figure 3). Fill openings less
than 50 percent full to allow room
for expansion. Do not overfill gap.
GREAT STUFF PRO
™
Window &
Door should be applied around all
four sides of a window opening,
and top and sides of a door
opening. Diameter of foam bead
should not exceed 3" (8 cm).
2. The foam dispensing gun can
dispense a foam bead from 1/8"
to 3" (0.3 cm to 8 cm). This is
achieved by squeezing the trigger

knob to set how far the trigger can
be pulled (Figure 4). If using a straw
dispenser, the force exerted on the
button controls the size of the foam
bead.
3. If gap is overfilled, trim away
excess foam with a sharp knife
(Figure 5). Foam will be tack-free in
5-10 minutes and can be trimmed
within 1 hour. It is fully cured 12
hours after application.* If product
remains in the can, the gun may
be left attached for up to 30 days.
Always close the flow control knob
to prevent air from entering the gun
when not in use.
4. Clean foam dispensing gun
periodically by rubbing the end on
soft wood to free it from foam. Do

gun. Use GREAT STUFF PRO
™
Gun
Cleaner between extended periods
of non-use.





For Sales Information: 1-800-232-2436 (English) . 1-800-565-1255 (French)
www.dowgreatstuff.com
Printed in U.S.A.
a proud partner of
®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow
Habitat for Humanity is a registered service mark owned by Habitat for Humanity International

determining whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s workplace and disposal practices are in compliance with applicable laws and other
government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries
or regions. Dow assumes no obligation or liability for the information in this document. References to “Dow” or the “Company” mean the Dow legal entity selling the products to Customer unless otherwise expressly noted.
               
FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.
Dow Polyurethane Foam Insulation and Sealants



long sleeves, gloves, and goggles or safety glasses. Provide adequate ventilation or wear proper respiratory protection. Contents under pressure.

or safety glasses. Provide adequate ventilation or wear proper respiratory protection. Contents under pressure.

any specific system.
Cleanup

be dissolved with GREAT STUFF
PRO
™
Gun Cleaner.

foam must be mechanically removed
or allowed to wear off in time.

install a can of GREAT STUFF PRO
™
Gun Cleaner to the foam dispensing
gun and spray until all foam is blown
out of the gun and only cleaner is
visible (approximately half the can
of cleaner will be used). Allow the
gun containing the solvent to sit for
several minutes and repeat with a
second flush.

mounted on the foam dispensing
gun. This will dissolve the lip seals
inside the gun and render it useless.
Foam escaping at the handle or
trigger indicates a faulty seal. If
this happens, the gun should be
replaced.
Safety and
Conditions of Use

Data Sheet carefully before use.

™
Gun Cleaner
is flammable and contains acetone
and propane. Vapor may travel
to other rooms. Ensure adequate
ventilation. Shut off all pilot lights
and extinguish open flames;
eliminate all sources of ignition
before use. Do not smoke or use
lighters or matches while dispensing
foam.

Provide adequate ventilation or wear
proper respiratory protection.

glasses.

Figure 4
Figure 5
*Dependent upon temperature, relative humidity and size of foam bead