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Insulate the electrical runs in your home with Great Stuff Insulating Foam Sealant. There is a wide variety of caulks designed for use with different materials including silicone caulk, concrete caulk, exterior caulk, roof sealant, window sealant and more. This Great Stuff spray foam is a fireblock that impedes the spread of fire and smoke through service penetrations. The foam has an identifiable orange color and can be delivered through stud walls. This window insulation foam can be used in many different ways around the home. This Great Stuff insulating foam sealant can be used both indoors and outdoors so your whole property is covered.


  • Application temp. range: 40 degrees to 100 degrees F
  • Expansion ratio: 2-4:1
  • Number of components: 1
  • Standards: UL classified
  • Substrates: wood, glass, metal, masonry, most plastics
  • Application: fire barrier
  • Full cure: 8 hours
  • Indoor, outdoor
  • Insulation value: R-3.7

Great Stuff™ Fireblock

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