Read directions and safe handling information carefully before use.


  1. Shake can vigorously for 30 seconds before use.
  2. Screw threaded end of straw assembly securely onto valve. Dispense slowly. If foam does not flow easily, do not force from can.
  3. Familiarize yourself with foam by practicing on newspaper.
  4. Fill openings less than 50% full. For large voids, mist water between foam applications to speed curing. Overfilling can buckle substrates.
  5. Foam is tack-free in about 5-10 minutes and cures in eight hours.
  6. Cured foam can be trimmed, shaped, sanded, painted or stained. To trim, use a sharp knife or serrated blade.
  7. Can will seal itself shut if allowed to sit unused for over two hours and may not be restarted. Expect one-time use.



For warnings and precautions, disposal information and more, download the GREAT STUFF™ Consumer Safety Information (2.1MB PDF).

Safe Handling of GREAT STUFF(TM) and GREAT STUFF PRO(TM) products:

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