
Full Answer
What is big gap foam sealant?
GREAT STUFF™ Big Gap Filler Insulating Foam Sealant is an expanding foam sealant that fills, seals and insulates gaps up to 3 inches. This ready-to-use sealant is specially formulated to take on common areas of energy loss such as rim joists/sill plates, plumbing, HVAC, and other larger penetrations All-direction dispensing.
Can the great stuff big gap filler be used as a filler?
Because the Great Stuff Big Gap Filler is a closed-cell, you cannot use it as a gap filler. The product can fill gaps between the wood, plastics, and metal surfaces. Also, this product has been thoroughly tested for durability. This is to ensure that it will last in spaces where people live or work.
Does great stuff spray foam have expansion properties?
However, there are now many Great Stuff sprays available on the market today that have varying degrees of expansion properties depending on the job you’re doing. Great stuff spray foam has proven excellent for new construction and remodeling projects because it’s more than an insulator.
Can I use great stuff™ or Great Stuff Pro™ outside?
Great Stuff™ and Great Stuff Pro™ products can be used outdoors. However, cured foam will discolor if exposed to ultraviolet (UV) light. If left exposed, the foam will eventually crumble. Paint or coat foam for best results in outdoor applications.

What Great Stuff foam is closed cell?
Single Part Polyurethane Foam Great Stuff Pro™ foam sealants are closed-cell, single part polyurethane foams that expand and cure when they come in contact with air and moisture.
Is Great Stuff Gaps and cracks closed cell foam?
GREAT STUFF PRO Gaps and Cracks - 30oz Fireblock Foam Insulation Sealant, Pack of 12. Closed Cell, Polyurethane Expanding Spray Foam. Seals & Insulates Gaps Up to 3". Applicator Gun Not Included.
IS can spray foam open or closed cell?
Spray foam is referred to as either closed cell or open cell due to the structure of the material itself and the makeup of the cell structure. Open Cell foam is called so because there is room left inside each cell of the foam – think of it as a little air bubble.
Is Great Stuff window and door Closed cell?
GREAT STUFF PRO™ Window & Door Closed-cell, Insulating Foam Sealant creates an air tight seal by expanding between window and door frame and the rough opening. The special low expansion formula does not distort or bow window and door frames when applied properly.
How do I know if my foam cell is closed?
0:384:37Video review difference between open cell and closed cell foam insulation ...YouTubeStart of suggested clipEnd of suggested clipWith the closed cell than you would with the open cell. Now another difference when you hold it inMoreWith the closed cell than you would with the open cell. Now another difference when you hold it in your hand or if you can feel it is the the closed cell insulation right here is very rigid.
Is Styrofoam closed cell foam?
Styrofoam is a trademarked brand of closed-cell extruded polystyrene foam, or XPS. This foam is also referred to as “Blue Board” and is used for building insulation, thermal insulation and water barriers.
Is great stuff Fireblock closed cell?
GREAT STUFF PRO Gaps and Cracks - 24oz Fireblock Foam Insulation Sealant, Pack of 12. Closed Cell, Polyurethane Expanding Spray Foam. Seals & Insulates Gaps Up to 3".
Does great stuff have an R-value?
GREAT STUFF Insulating Spray Foam Sealant: 1 Components, 12 oz Size, Aerosol Can, Cream, R-3.7 - 48WK16|00157906 - Grainger.
Is 2 inches of closed cell foam enough?
Closed cell spray foam should be 4- to 5- inches on the ceiling and 2- to 3-inches in the walls. This might come as a surprise to you, but honestly, this is all the spray foam it takes to get the biggest bang for your buck with the air seal and thermal resistance needed for certain areas of the home.
Is expanding foam airtight?
This expanding foam provides a highly flexible airtight seal with outstanding acoustic and thermal insulation performance.
Where should you not use expanding foam?
When NOT to Use Spray Foam InsulationFor areas that are too close to electrical boxes:For areas too close to ceiling light boxes:Open-cell spray foam on your roof:For closed-cavity spaces:If you have a history of skin, respiratory, or asthma problems:
Can great stuff be used as insulation?
A. 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.
What is Great Stuff foam made of?
Polyurethane prepolymers, polymeric diisocyanate, isobutane, methyl ether, and propane. See can label for additional contents.
Can Great Stuff be used as insulation?
A. 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.
Where should you not use expanding foam?
When NOT to Use Spray Foam InsulationFor areas that are too close to electrical boxes:For areas too close to ceiling light boxes:Open-cell spray foam on your roof:For closed-cavity spaces:If you have a history of skin, respiratory, or asthma problems:
What is the R value of Great Stuff?
GREAT STUFF Insulating Spray Foam Sealant: 1 Components, 12 oz Size, Aerosol Can, Cream, R-3.7 - 48WK16|00157906 - Grainger.
Why Great Stuff™?
Whether you’re dealing with unwanted air, moisture, pollen or even pests, there’s an energy-saving solution for every seal. Find exactly what you need for your next project.
What is a gasket foam?
A flexible, water-based, one-component foam designed to form an interior gasket between framing lumber and drywall to improve air sealing performance.
What is a "expand"?
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.
Is Great Stuff open cell foam?
I wouldn't recommend Great Stuff because it's an open cell foam. Closed cell urethane is the way to go. Moisture can penetrate open cell foams.
Does spray foam work in two canisters?
Conversely, expensive spray foam kits that come in two canisters does work well. But i found it didn't expand nearly as much as expected (possibly user error - I think I went too quickly rather than slower strokes).
Product Overview
GREAT STUFF Big Gap Filler Insulating Foam Sealant with Quick Stop Straw Technology offers the same benefits as GREAT STUFF Gaps and Cracks but fills gaps larger than 1 in. So it's great for creating larger weather-tight seals to stop drafts and keep critters out.
Info & Guides
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