Designed to help save much more than energy costs1, GREAT STUFF™ Fireblock Insulating Foam Sealant insulates and seals service penetrations, providing an airtight barrier that impedes the spread of smoke and flames
GREAT STUFF™ Fireblock Insulating Foam Sealant is a ready-to-use, minimal-expansion insulating foam sealant that fills and insulates gaps up to 3/4 inch to restrict airflow. This distinctly orange solution seals electrical wiring run through wall studs as well as service penetrations in walls and between floors to provide a simple, cost-effective way to maintain the continuity of an approved fire block material throughout the house.
1 Read all instructions and (Material) Safety Data Sheet ((M)SDS) carefully before use.
2 Intended for use in residential application to maintain the continuity of an approved fire block material.
3 70 ± 5°F and 50 ± 5 % RH, 1-inch bead diameter, 6-inch length. The cure rate is dependent on temperature, humidity, and size of the foam bead.
What is Great Stuff™?
Great Stuff™ is the brand name for a line of one-component insulating foam sealants that can help make your home more comfortable and energy efficient by sealing the gaps and cracks where air conditioned and heated air escape. Great Stuff Pro™ Polyurethane Foam Sealants can be used for both small and large air sealing and retrofit applications by DIY’s or professionals. Great Stuff™ comes in cans with a straw applicator or the new patented Smart Dispenser™. Cans are in 12, 16, and 20 oz sizes. Great Stuff Pro™ series is available in larger cans (20,24, & 30 oz sizes) and use the dispensing guns to apply.
Can I use Great Stuff™ and Great Stuff Pro™ foam to air seal my electrical receptacles?
Great Stuff™ and Great Stuff Pro™ foam can be used to air seal around and behind electrical boxes and insulated wires but should never be used inside a box where it may be exposed to bare copper wires
How do I get Great Stuff™ foam off of my skin?
If the foam has not cured or hardened, use fingernail polish remover (with acetone); a polyglycol-based skin cleanser or corn oil may be effective. Then wash with soap and plenty of water. If the foam has hardened, there is no solvent that will remove it. It will not harm your skin and will wear off over time. To remove cured foam from skin, use a pumice stone (available at most drug stores) and warm, soapy water. Then apply petroleum jelly.
Where can I use Great Stuff™ and Great Stuff Pro™ products?
Great Stuff™ and Great Stuff Pro™ products can be used in a variety of interior and exterior applications, most commonly in air sealing and home retrofit applications.
*Note: Great Stuff™ Insulating Foam Sealants are not for use in aviation, or food/beverage contact, or as structural support in marine applications.
What is the Great Stuff Smart Dispenser™?
The Smart Dispenser™ from the Great Stuff™ brand is a game-changing, industry best dispenser for one component can sealants.
Addressing all of the pain points of standard straw dispensers, the Smart Dispenser™ uses integrated mechanical parts to improve the user experience with Great Stuff Insulating Foam Sealants:
If using GREAT STUFF™ SMART DISPENSER™, follow these additional steps before application:
Pipe and Plumbing Penetrations
CHECK OUT OUR OTHER PRODUCTS
There’s a solution for every seal. See what else GREAT STUFF™ has to offer.
Expands to fill gaps and cracks up to 1". Use inside or out to fill gaps and cracks around plumbing lines and rim joists, in attics and basements, and more
Expands to fill gaps up to 3”. Use inside or out to fill big gaps and cracks around plumbing lines and rim joists, in attics and basements, and more
Blocks critters, pests and insects. Seals gaps and cracks up to 1" where pests typically enter such as pipe and plumbing penetrations, dryer vents and more.
A flexible, low-pressure formulation for sealing between window and door frames and their rough openings. When applied properly, it won’t bend or bow the framework
Best can foam gun on the market. I have been an insulation installer for 13 years, and this gun is great! Especially with the tip extensions and getting in those tight spots.
It’s about time…You don’t know how many cans I lost due to poor dispensing