Specification

NOTICE: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer
is responsible for 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. 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. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.
Dow Polyurethane Foam Insulation and Sealants
CAUTION: When cured, these products are combustible and will burn if exposed to open flame or sparks from high-energy sources. Do not expose to temperatures above 240ºF (116ºC). For more information, consult
(Material) Safety Data Sheet ((M)SDS), call Dow at 18665832583 or contact your local building inspector. In an emergency, call 19896364400 in the U.S. or 15193393711 in Canada. When air sealing buildings,
ensure that combustion appliances, such as furnaces, water heaters, wood-burning stoves, gas stoves and gas dryers, are properly vented to the outside. In Canada visit: http://archive.nrc-cnrc.gc.ca/eng/ibp/irc/
bsi/83-house-ventilation.html.
GREAT STUFF
™
Insulating Foam Sealants contain isocyanate and a flammable blowing agent. Read all instructions and (M)SDS carefully before use. Eliminate all sources of ignition before use. Cover all skin. Wear long
sleeves, gloves, and goggles or safety glasses. Provide adequate ventilation or wear proper respiratory protection. Contents under pressure. Not to be used for filling closed cavaties or voids such as between walls and
under tub surrounds.
Building and/or construction practices unrelated to building materials could greatly affect moisture and the potential for mold formation. No material supplier including Dow can give assurance that mold will not develop
in any specific system.
* Read all instructions and (Material) Safety Data Sheet ((MSDS) carefully before use.
** www.energystar.gov
*** Intended for use in residential applications to maintain the continuity of an approved fire block material.
®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow.
Printed in the U.S.A.
dowgreatstuff.com
dowgreatstuff.ca
dowbuildingsolutions.com
For Technical Information:
1-866-583-BLUE (2583) (English)
1-800-363-6210 (French)
For Sales Information:
1-800-232-2436 (English)
1-800-565-1255 (French)

Dow Chemical Canada ULC
Dow Building Solutions
450 – 1st St. SW
Suite 2100
Calgary, AB T2P 5H1
Form No. 179152140415 CDP
Form No. 178152140415 CDP
Where to Use GREAT STUFF™ Big Gap Filler
Use GREAT STUFF
™
Big Gap Filler Insulating Foam Sealant to seal gaps up to 3 inches to insulate around common areas of energy

Electrical openings
Sill plate
Pipe penetrations
Hard to reach corners
Rim joist
GREAT STUFF
™
Big Gap Filler
Insulating Foam Sealant is
Cost Effective
• One12oz.can=upto19tubesofcaulk
†
• One20oz.can=upto35tubesofcaulk
†
†
Calculatedcaulkequivalencebasedon10.2oz
tubes of caulk.
In the United States
The Dow Chemical Company
Dow Building Solutions


Did you know that the average home has a 1/2 mile of gaps and
cracks?** Seal them all with GREAT STUFF
™
.
Each GREAT STUFF
™
Insulating Foam Sealant* is specially

and even pests. Our comprehensive line of ready-to-use
sealants is a simple, inexpensive money-saving solution for any
do-it-yourself homeowner.
 GREAT STUFF
™
Gaps & Cracks* — Foam sealant that
expands to seal and insulate gaps up to one inch.
 GREAT STUFF
™
Window & Door* — Minimally expanding

 GREAT STUFF
™
Fireblock* — Impedes spread of fire and
smoke through service penetrations.***
 GREAT STUFF
™
Big Gap Filler* — Foam sealant that
expands to seal and insulate gaps up to three inches.
 GREAT STUFF
™
Pestblock* — Blocks pests out of the

Greatness comes in many forms