Great Stuff Gaps & Cracks Insulating Foam Sealant - 12 oz

  • Forms a long-lasting, airtight, weather-resistant seal
  • Helps keep insects, moisture/condensation and allergens out
  • Adheres to wood, metal, masonry, glass and most plastics
  • Interior/exterior use
  • Tack-free in 5-15 mins; trimmable in one hr
$4.99
Availability: In stock
SKU
806638

Great Stuff Gaps & Cracks Insulating Foam Sealant is a ready-to-use, minimal-expansion insulating foam sealant that expands up to 1" to take the shape of gaps, creating a long-lasting, airtight and water-resistant seal around plumbing and electrical, in basements, attics, and more. Fills, seals and insulates gaps, providing a simple, cost-effective solution to help minimize unwanted airflow and improve energy efficiency all around the home.

Features
  • Forms a long-lasting, airtight, weather-resistant seal
  • Helps keep insects, moisture/condensation and allergens out
  • Adheres to wood, metal, masonry, glass and most plastics
  • Interior/exterior use
  • Tack-free in 5-15 mins; trimmable in one hr
  • Paintable, stainable and sandable
  • Cream-colored foam for easy identification

Skin of cured foam can discolor if exposed to natural light. Paint or coat foam for the best results.

70 ± 5°F and 50 ± 5 % RH, 1" bead diameter, 6" length. The cure rate is dependent on temperature, humidity, and size of the foam bead.

When to Use
  • Indoor/Outdoor use
  • Attic penetrations
  • Ducting
  • Pipe and plumbing penetrations
  • Electrical penetrations
  • Rim joists
  • Sill plate
  • HVAC penetrations
Directions
  • Shake vigorously for a minimum of 60 seconds. If the can sputters, simply shake the can while held upside down
  • Any uncured product that gets on the skin can be removed with acetone  
  • Best results if used when product temperature ranges from 60-90°F (15-32°C). The can should not be exposed to temperatures more than 120°F. Cured foam should not be exposed to temperatures in excess of 240°F
  • Firmly screw straw assembly onto valve and dispense slowly
  • Mist with water to speed cure
  • Trim cured foam with serrated blade
  • If applied outdoors, be sure to paint or cover foam to prevent discoloration and UV damage
  • Great Stuff cans featuring the straw tube applicator will seal shut if left to sit for more than 2 hs after its last use
If Using Great Stuff Smart Dispenser, Follow these Additional Steps Before Application

Great Stuff cans featuring the Smart Dispenser may be reused up to 30 days with the straw left attached to the canister, just clean the tip after your first use. 

For Best Results
  • Thread the Smart Dispenser onto the valve until it is secure, ensuring there is no gap between the dispenser and the valve
  • Do not unwind the dispenser after you have started using it
  • Let up on the trigger slowly to release pressure in the straw and prevent spurts during the next use and to achieve the most consistent bead
Specifications
  • Size: 12 oz
  • Form: Foam
  • Certification: UL classified
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